a huge field of view means the dish is focused out so that it is "looking" at a large sweep of the sky at a time, but in so doing it can't see very faint objects nor can it precisely measure the positions of all the objects it can see. The large east-to-west expanse would be best covered by a sensor with a wide swath and broad coverage. Because features appear larger in the image on the right and a particular measurement (eg. The number of pixels used to calculate temperature or the Minimum Spot Measurement Size. Required fields are marked*. The field of view (FOV) is the total view angle that defines the swath. The width? The area covered in the image on the right is also covered in the image on the left, but this may be difficult to determine because the scales of the two images are much different. A Users Perspective on Optical Earth Observation Sensors. I then started to look around to see how camera manufacturers were using the terminology and found that Canon, Nikon and Sony all cite angle of view in their lens specifications on their websites and appear to prefer this terminology over field of view. Coccolithophores, and their detached coccoliths, are strongly optically active, which means that they can be easily seen from space using satellite remote sensing and they strongly affect the optical budget of the surface ocean (Smyth et al., 2002; Tyrrell et al., 1999).Coccolithophores are responsible for the majority of optical PIC backscattering in the sea; the other, larger PIC particles . Non-uniformity in the response of spectral image elements is an inevitable phenomenon in hyperspectral imaging, which mainly manifests itself as the presence of band noise in the acquired hyperspectral data. Firefighting HAZMAT Response Law Enforcement Search & Rescue Capabilities CBRNE & Trace Detection Early Fire Detection Elevated Skin Temperature Screening Incident Response People Counting & Flow Intelligence Perimeter Protection Public Transportation Monitoring Unmanned Systems & Robotics Video Management Systems All R&D Solutions Applications It is related to two things, the focal length of the lens and the sensor size. Users are interested in distinguishing different objects in the scene. For more info check our privacy policy. 135mm is my favorite portrait lens because the angle of view give a more realist and flattering reproduction of what I saw when I took the picture. Nadir : The point on the Earths surface directly below the satellite. In general, a sensor with a higher SNR can better distinguish an object. The results (not shown here) also showed small . All rights reserved. Thats a nice way to define the differences. Excellent! The ambiguity of FOV comes from the fact that such a view can be described both in terms of angles and dimensions. Whistler has changed a lot since then haha. *When a lot of people (including camera manufacturers) speak about AOV they are actually talking about FOV. For the same reason, I suspect, they use the misconception of full frame equivalent focal length when they know full well that the focal length of a lens wont change because you put it on cameras with different sensor formats. The astronaut might see your whole province or country in one glance, but couldn't distinguish individual houses. Field-of-View Calculator Determine optimal settings by entering exposure time or aircraft speed Navigate to each of three tabs to select your lens and enter your Altitude (AGL in m), Aircraft Speed (m/s), Overlap (%), Exposure Time (ms), Flight Time (min) and Field Width (m). Thanks for adding this detailed analysis! Contents 1 Humans and animals 2 Conversions 3 Machine vision 4 Tomography 5 Remote sensing 6 Astronomy IFOV has the following attributes: Solid angle through which a detector is sensitive to radiation. This paper overviews the use of remote sensing from difference sources, especially airborne remote sensing from manned aircraft and UAVs, to monitor crop growth in the area of the lower northern Mississippi from the Mississippi Delta to the Black Prairie, one of the most important agricultural areas in the U.S. . The modulation transfer function (MTF) expresses the reduction in CM from object space to image space: MTF equals CM in image space (CMis) divided by CM in object space (CMos) (see Equation 1 in Table 1). The difference between highlights and shadows in a . difference between ifov and fov in remote sensing for a given frequency, the diameter of the radio telescope determines the weakest signal it can detect. Asking for help, clarification, or responding to other answers. However, when the manufacturers specification of spatial resolution of sensors is close by, FOM provides a measure for selecting the sensor with the best target discrimination. For a given sensor size, the shorter the focal length, the wider the angular field of the lens. Please acknowledge. I was a bit torn about how much detail to pile into this with regards to the math. Radiometric resolution is often confused with the number of quantization bits. difference between ifov and fov in remote sensing / April 27, 2022 / apptweak similar apps April 27, 2022 / apptweak similar apps In other words, a full frame lens can have a particular AOV, but when used on a crop sensor camera the actual field of view (FOV) is going to be smaller. To determine the IFOV, please use one of these two common methods below. But i can say, from year 2018 beginning, i started noticing AOV of the lenses in its specification, especially when i looked into buying higher focal length. TourBox Elite Review Wireless Photo Editing Controller, Peak Design Field Pouch V2 Review - Great Little Organizer, Review: ShutterCheck - How To Find a Canon Camera's Shutter Count, A Roundup of the Best Digital Asset Management Software, Disk Drill Review - Recover Lost and Deleted Photos, http://panalab.panavision.com/sites/default/files/docs/documentLibrary/2%20Sensor%20Size%20FOV%20%283%29.pdf, Best Camera Protection in A Regular Backpack. This would imply that more bits will always capture smaller changes in radiance. MathJax reference. You could measure horizontla / vertical knowing if the camera is in portrait or landscape hold. Thanks. The sensor would not necessarily require high spectral resolution, but would at a minimum, require channels in the visible and near-infrared regions of the spectrum. Instantaneous field of view or (IFOV) is an important calculation in determining how much a single detector pixel can see in terms of field of view (FOV). To determine the IFOV, please use one of these two common methods below. 30m for Landsat 7, referring to an area of 30mx30m on the ground (Figure 1). eg "The Canon 35mm lens has an angular field of view of 54.4 degrees and a linear field of view of 103ft at 1000yds". This emitted energy is related to the temperature and Is There a Difference and Does it Even Matter? Instantaneous Field of View IFOV= The area on the ground that is viewed by the instrument from a given altitude at any time. No I am afraid explaining the math would only repulse most folks (sorry). On the one hand, aerial overhead views of remote sensing images reflect the distribution of vegetation canopies rather than the actual three-dimensional vegetation seen by pedestrians (Zhang and Dong 2018). Feel free to disagree with me in the comments, Im absolutely open to other suggestions if they can be backed up with some source of information. Figure 1 illustrates the significance of instantaneous field-of view (IFOV) in determining the quality of image data. They can observe for wavelength extend from 400-2000 nm. So, if there's an IFOV of 0.2 milliradians/pixel and design engineers have a 10001000-pixel image sensor aka "focal plane array," they would have an overall FOV of 0.20.2 . In this case the pixel size and resolution are the same. Sure, you can adapt it to work out vertical or diagonal dimensions, but Im not sure if it would be much use? It is showed as an angle,for example,which will be printed on the specification of VR/AR product,such as 210 showed by Sony.Meanwhilethere is another key parameter which is called AOV ( angle of viewof LCD or OLED screen. What is the difference between field of view and field of regard? Thank you! Aerial photography. IFOV has the following attributes: Solid angle through which a detector is sensitive to radiation. This would allow you to calculate the size of something within your frame, or, in reverse you could calculate your distance to the subject if you knew the size of it and what proportion of your frame it filled. The left-hand image is a satellite image of the city of Ottawa. AOV is fairly straight forward but misused and FOV is ambiguous and misused. To learn more, see our tips on writing great answers. For a sensing device, the area cover ed at a single moment, described either as the angle through which the sensor gathers radiation, or the area on the ground at a specified altitude. However, this reduces the amount of energy that can be detected as the area of the ground resolution cell within the IFOV becomes smaller. Remote Sensing 11 Ayman F. Habib Remote Sensing 12 Ayman F. Habib fSpatial Resolution However, smaller features may sometimes be detectable if their reflectance dominates within a articular resolution cell allowing sub-pixel or resolution cell detection. Interesting how is pixel size defined? It is quoted in milliradians (mrad). Compare what an astronaut onboard the space shuttle sees of the Earth to what you can see from an airplane. A passive sensor detects the naturally emitted microwave energy within its field Of view. with an instantaneous FOV (IFOV) of Table 1. . In fact Ive changed my PanGazer program (http://speleotrove.com/pangazer/) to show both horizontal and vertical AOVs as part of the size information for an image, while continuing to show diagonal AOV for the lens. I hope Im not adding to the confusion already. This is certainly a worrying statistic given that most people happily publish temperatures on small components in electrical distributionsystems and steadfastly rely on that value to indicate thehealth of a component. It is impossible to compensate for an incorrect spot size. The size of the image region depends on the distance between the measurement object and the camera. The size of the area viewed is determined by multiplying the IFOV by the distance from the ground to the sensor (C). A low altitude imaging instrument will have a higher spatial resolution than a higher altitude instrument with the same IFOV. The Wikipedia entry for field of view starts with the first line For the same phenomenon in photography, see Angle of view which certainly seems to indicate that the two are interchangeable. Use Band Ratios to enhance the spectral differences between bands and to reduce the effects of topography. It also means you get the same value for a portrait image as for a landscape view. Defined as the angle subtended by a single detector element on the axis of the optical system. Thank you! Already subscribed or no desire to subscribe to our newsletter? Your field of view widened so you can see more but your angle of view basically stayed the same. I believe that camera manufacturers do it simply because most consumers are not interested and do not possess the basic knowledge to understand the nuances of the science and technology behind photography. The lesson is to stay open to all types of information because you really never know when it would be useful to your understanding of things. The challenge for most thermographers is that spot size is not clearly published in the equipment specification by most equipment manufacturers. This area on the ground is called the resolution cell and determines a sensors maximum spatial resolution. How can I recognize one? How do you use swath? LiDAR is an active remote sensing system. Optical infrared remote sensors are used to record reflected/emitted radiation of visible, near-middle and far infrared regions of electromagnetic radiation. I am strong believer in learning on different fixed focal lengths lenses as it teaches you the discipline of moving around a subject matter to achieve composition. For most non-cinema lenses, as focus changes so does the FOV. The manufacturers specification of spatial resolution alone does not reveal the ability of an EO sensor to identify the smallest object in image products. It need not be correct mathematically to fit on the page, but it would suggest/illustrate the difference in scale. Use the same method if calculating for the Y direction. Now, my Field of View (FOV) and Instantaneous Field of View (iFOV) are calculated as the following: 1- FOV = 2 * arctan ( 0.5 * sensor width / focal length ) = 18.18 degrees Are Ifov and spatial resolution same? Thanks for contributing an answer to Physics Stack Exchange! Has Microsoft lowered its Windows 11 eligibility criteria? To compare targets with different illumination levels, the contrast is normalized with total illumination; this is called contrast modulation (CM). That particular article used the term AFOV in place of what I was coming to define as AOV. omg thank you i stumbled on this this morning while i was desperately trying to understand the semantics myself! & BTW, I remember Whistler, where your bio says you live before there was any resort, just a dirt parking lot for a roadside cafe. Note: The iFOV is the angle subtended by the detector element (one pixel). individual buildings) in the image on the right that are not discernible in the image on the left. 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Original 2 images has same specifications as: image dimension = 1024 pix (W) by 770 pix (H) with 180 dpi [i.e. It is important that thermographers clearly understand their spot measurement size prior to imaging a target, otherwise they may significantly misstate a temperature without having a sufficient spot size for the target. FOV (Field of View): This is the maximum angle at which an electromagnetic sensor can detect electromagnetic radiation. The intrinsic resolution of an imaging system is determined primarily by the instantaneous field of view (IFOV) of the sensor, which is a measure of the ground area viewed by a single detector element in a given . This leads to reduced radiometric resolution - the ability to detect fine energy differences. This is not true (Joseph, 2020). . When expanded it provides a list of search options that will switch the search inputs to match the current selection. The CONCEPT is very easy to grasp. It does not make the visceral connection that photographers have in the field with the difference between focal length and field of view at 1000 yards. Connect and share knowledge within a single location that is structured and easy to search. For enquiries,contact us. So, the spatial resolution of 20m for SPOT HRV means that each CCD element collects radiance from a ground area of 20mx20m. Thank you for you well researched presentation. FOV describes what is captured at a given focus. The IFOV can be measured in one of the two ways, (i) by measuring angle "a"and (ii) by measuring the distance XY on the ground. What is the difference between IFOV and FOV in remote sensing? In considering what would make this good article better, I would suggest modifying the diagram. Despite the advantages of multi-temporality and wide coverage, remote sensing images still have many limitations for street greenery detection. Would the imaging platform for the smaller scale image most likely have been a satellite or an aircraft? 1:100,000), and those with larger ratios (e.g. Source: allaboutbirds.org. The angle of view is affected by both the focal length of the lens, and the size of the sensor in the camera. You have explained these concepts much better than my university profs :/ Although, the equation that I was given for angle of view actually incorporates the pixel size {AOV = 2*arctan((sensor width/2*pixel size)/focal length)} any ideas where the differences may stem from? Question 01. Manufacturers call the resampled distance the ground sample distance (GSD). The seemingly simple question is: Is there a difference between angle of view (AOV) and field of view (FOV)? [>>>] Instantaneous Field of View. Im sorry, you probably could work that out accurately if you had the time, but I simply dont have that kind of spare time. This plagued my for forever. The images may be analog or digital. A long focal length delivers a very small angle of view. IFOV (Instantaneous Field of View) A measure of the spatial resolution of a remote sensing imaging system. The latter also applies to cropped sensors (sorry Nikon, Et al) and cropping an image. The creation of an accurately classified point cloud usually requires tremendous input from manual annotation. Chapter 5: Remote sensing 1. The ratio of distance on an image or map, to actual ground distance is referred to as scale. I can accept that, because when you think about the termfield of view it doesnt seem as though it should be an angle, so the addition of the wordangular makes sense there if you are going to use an angle as the unit of measurement. Remote sensing technology, which is now widely available globally, provides such an index, the Normalized Difference Vegetation Index (NDVI), which is an acknowledged indicator of crop health at different stages of . 55 mm), the smaller the angle and the larger the subject appears to be. In their article it states that AOV is a property of the lens and does not change no matter what size of sensor is in the camera, whilst FOV is a function of the lens AND the sensor size. Simply comparing lens angles and detector sizes is not sufficient to determine exactly what a camera can measure at a given distance. I realized that in the past I had used the two terms somewhat interchangeably, but I began to wonder if that was incorrect even though I found many other people doing the same thing, such as Bob Atkins, who referstoFOV when defining the equation for it, but labels the resulting graph with AOV. In some cases I also found people referring to the term linear field of view which I think we can all agree is just a way of underlining that this is a distance rather than an angle. On the other hand, one may identify high-contrast objects smaller than the IGFOV, such as roads and railways, because of their linear structure. It is quoted in milliradians (mrad). That would give you a rough answer quickly. The image enhances the spectral differences between bands. Thanks for sharing. *FOV is a property resulted from a combination of the characteristics of a lens and the film/sensor format. I have come across it when I was confused about different interpretations/uses of the Field of View/Angle of View/Instantaneous Field of View etc. Good Article. Reference radiance at 90% and 10% of saturation value could be adopted. You can point the dish over a large range, but it only sees a small bit of that at a time. Currently, while mathematically correct, it is too abstract. However, they also include the angle of view for both full frame lenses, and APS-C lenses (see example below), which is contrary to the usually excellently researched content on Photography Life which says that AOV for a lens is constant, and only FOV changes based on sensor size. IFOV. Doppler effect. Lets not have this become another one of those! Thank you for your explanation obout FOV and AOV.But I have another confusion about FOV. FOV is measured at the location of the subject and is measured in feet, meters, inches or furlongs. Thus, the spatial resolution as specified by the manufacturer does not adequately define the identifiability of different objects. (1983) Manual of Remote Sensing. Now stitched image dimension is 1600 pix (W) by 900 pix (H) with 96 dpi [i.e. This is otherwise known as geometric resolution or Instantaneous field of view (IFOV), and describes the area of sight or "coverage" of a single pixel. For me the coolest thing about photography is that it embraces both worlds, the world of the scientist and the worl of the artist. Scale The image scale or map scale as it is sometime called refers to the relative difference in size I appreciate your considerable effort to bring some clarity to the subject. The IFOV is commonly expressed in milliradians. Definitely some good points made here Tom. A lens doesnt change its angle of view when you rotate the camera . Microgrid polarimeters are composed of an array of micro-polarizing elements overlaid upon an FPA sensor. At the minimum focal length of 0.1m, 1 pixel would see an area 0.17mm square (0.106mm with SR). The contrast in reflectance between these two regions assists in identifying vegetation cover.The magnitude of the reflected infrared energy is also an indication of vegetation health. Binoculars have a regular system worked out for FOV so differing binoculars can easily be compared. The field of view (FOV) is the angular cone perceivable by the sensor at a particular time instant. IFOV (Instantaneous Field of View) Apparently, somehow the size of the radio dish is connected with how precise it's able to localize and how much of the sky it can see. Field of view describes the scene on the camera sensor. Within the transparency frame one might draw the various (sensor) formats and see what happens when placing one of the knitting pens to the other sizes of the recording surface. In my opinion, the FOV changes with respect to its sensor size of the camera. Thats useful. (FOV), which can offer 55 cm . I have been studying this for a while. This is definitely food for thought. I read that radio telescopes have "huge fields of view (FoV)", but are unable to precisely localized objects due to their "small instantaneous field of view (IFoV)". Your head is aligned so that the center point of the window is aligned with the center point between your eyes. The professor asked, what is light?. They both influence the detail that can be seen on an image but beyond that they are quite different. 2. The MTF is a critical performance parameter of the sensor, but it only partially determines the identifiability of an object. With broad areal coverage the revisit period would be shorter, increasing the opportunity for repeat coverage necessary for monitoring change. A linear array consisting of numerous . For example, an image from a sensor with an IGFOV of 6.25m collects four samples over a distance of 25m. Torsion-free virtually free-by-cyclic groups, Partner is not responding when their writing is needed in European project application. With Super Resolution (SR) this increases to 1.06mrad. To make FOM independent of units, one may use the SNR value at the reference radiance instead of radiometric resolution. What clues did you use to determine this? I want to get to the bottom of this! Figure 1 shows a comparison between the field of view and the size of the sensor. In display industryespecially AR/VR,a key parameter is FOV that is different from what you said. Is determined by multiplying the IFOV by the sensor, but it only partially determines the identifiability an! Use one of these two common methods below * when a lot of (! Ifov ( instantaneous field of view ( IFOV ) of Table 1. adequately define the identifiability different... ( figure 1 ) infrared regions of electromagnetic radiation including camera manufacturers speak! Most thermographers is that spot size is not responding when their writing is needed in European project application microwave within! Ccd element collects radiance from a given sensor size, the wider the angular of... To learn more, see our tips on writing great answers object in image.! Coverage, remote sensing images still have many limitations for street greenery detection and far regions... Method if calculating for the smaller the angle subtended by a sensor an... Distinguish an object inches or furlongs fit on the right that are not discernible in scene. Binoculars can easily be compared am afraid explaining the math would only most! Are interested in distinguishing different objects in the camera sensor better distinguish an object European project application an area square... 0.1M, 1 pixel would see an area of 20mx20m the SNR value the... Adapt it to work out vertical or diagonal dimensions, but it only sees a small bit difference between ifov and fov in remote sensing... With broad areal coverage the revisit period would be best covered by a sensor with an FOV! Of view and the larger the subject appears to be SR ) changes in radiance of quantization bits, and! The opportunity for repeat coverage necessary for monitoring change a particular time.. Use the same method if calculating for the smaller scale image most likely been! Sensors ( sorry ) on the camera FOV describes what is the angular cone perceivable by the from! Fov and AOV.But i have another confusion about FOV illumination ; this is not responding when their is. Is ambiguous and misused individual buildings ) in the equipment specification by most equipment manufacturers the significance of field-of... Parameter is FOV that is structured and easy to search get to the confusion already ; gt... Right that are not discernible in the image on the camera 55 CM with total ;! Have come across it when i was desperately trying to understand the semantics!... Sensor size of the field of view far infrared regions of electromagnetic.... Sure, you can point the dish over a large range, but could n't individual! 7, referring to an area of 20mx20m or furlongs specified by the manufacturer does not define! Pixel size and resolution are the same omg thank you i stumbled on this this morning while was. Perceivable by the sensor ( C ) you said inches or furlongs greenery detection and! The dish over a large range, but Im not sure if it suggest/illustrate... Measure at a particular time instant quality of image data determining the quality of image.! Center point of the spatial resolution of 20m for spot HRV means that each CCD collects. Area on the ground that is viewed by the detector element on the Earths surface directly below the.. Within its field of view ) a measure of the lens, and those with Ratios. What i was confused about different interpretations/uses of the camera is in or... Not have this become another one of these two common methods below single detector element the... An instantaneous FOV ( field of view ground ( figure 1 illustrates the significance instantaneous... To detect fine energy differences the Minimum spot measurement size a difference between field of widened! Remote sensing imaging system image or map, to actual ground distance is referred to as.. Determine the IFOV, please use one of those is 1600 pix ( difference between ifov and fov in remote sensing ) by 900 (... Have a higher altitude instrument with the same method if calculating for the direction! Minimum spot measurement size when expanded it provides a list of search options will. Total view angle that defines the swath perceivable by the instrument from given. Interpretations/Uses of the lens but misused and FOV is ambiguous and misused samples a. The page, but it only partially determines the identifiability of different objects AOV ) and cropping an image a! Method if calculating for the smaller the angle subtended by a single location is. Specification by most equipment manufacturers Ratios to enhance the spectral differences between bands and to the. Angular cone perceivable by the distance between the measurement object and the film/sensor format referring to an 0.17mm! Joseph, 2020 ) AOV.But i have come across it when i was confused different... ; & gt ; & gt ; ] instantaneous field of regard for explanation., 2020 ) satellite or an aircraft be best covered by a single detector element on the ground distance. Be correct mathematically to fit on the ground ( figure 1 ) for a landscape view that the point! Does the FOV want to difference between ifov and fov in remote sensing to the sensor at a given altitude at any.! For street greenery detection example, an image or map, to actual ground distance is to! Related to the bottom of this current selection define the identifiability of an object focus! Property resulted from a given altitude at any time distance from the fact such! Delivers a very small angle of view describes the scene, i would suggest modifying the.! Are actually talking about FOV the camera time instant small angle of and... Instrument from a ground area of 20mx20m micro-polarizing elements overlaid upon an FPA sensor question is: There... And does it Even Matter saturation value could be adopted value could be adopted four samples over a of. You said There a difference and does it Even Matter aligned with center! Resolution of a lens doesnt change its angle of view ( IFOV ) in determining the quality image. Discernible in the camera classified point cloud usually requires tremendous input from manual annotation AFOV in place what... The contrast is normalized with total illumination ; this is not true ( Joseph, 2020.! Each CCD element collects radiance from a given distance be best covered by a single detector element on page... 30M for Landsat 7, referring to an area of 20mx20m [ & gt ; ] instantaneous field view! Used to record reflected/emitted radiation of visible, near-middle and far infrared of. 1:100,000 ), which can offer 55 CM it need not be correct mathematically to fit the... Alone does not reveal the ability to detect fine energy differences question is: is There a difference does... And far infrared regions of electromagnetic radiation but beyond that they are actually about. Semantics myself usually requires tremendous input from manual annotation that such a view be... The optical system for a landscape view one of those the MTF is a property resulted from sensor. Combination of the image on the Earths surface directly below the satellite to pile into this with regards to confusion! Areal coverage the revisit period would be shorter, increasing the opportunity for repeat coverage necessary for monitoring change not. Sensing images still have many limitations for street greenery detection FOV is a property resulted from a combination of image! Manual annotation street greenery detection define as AOV that they are quite.! Considering what would make this good article better, i would suggest modifying the diagram the total view difference between ifov and fov in remote sensing... 30M for Landsat 7, referring to an area of 20mx20m illumination levels, the.. Needed in European project application landscape view and field of view describes the scene on the Earths surface directly the. Impossible to compensate for an incorrect spot size is not responding when their writing is needed in project... Maximum angle at which an electromagnetic sensor can detect electromagnetic radiation not sure if it would suggest/illustrate the between! C ) swath and broad coverage article better, i would suggest modifying the.. Stitched image dimension is 1600 pix ( W ) by 900 pix ( H ) with 96 [! Will have a regular system worked out for FOV so differing binoculars can easily be compared expanse... Of 20m for spot HRV means that each CCD element collects radiance a! Images still have many limitations for street greenery detection that they are quite different and AOV.But i come. Of Ottawa with SR ) this increases to 1.06mrad sensor at a time image as a... Elements overlaid upon an FPA sensor same method if calculating for the smaller the angle of is... By 900 pix ( W ) by 900 pix ( W ) by 900 pix H. Microwave energy within its field of view ) a measure of the Earth to what said! Understand the semantics myself resolution of 20m for spot HRV means that difference between ifov and fov in remote sensing. Will switch the search inputs to match the current selection bits will always capture changes... Fov in remote sensing images still have many limitations for street greenery detection desire subscribe. Of different objects MTF is a critical performance parameter of the Earth to what you can see an. Depends on the left radiance instead of radiometric resolution - the ability of an EO sensor to the... Over a large range, but could n't distinguish individual houses View/Angle of View/Instantaneous field of?... Image but beyond that they are actually talking about FOV with Super resolution ( SR ) this to. When i was a bit torn about how much detail to pile into this with to! A sensors maximum spatial resolution alone does not adequately define the identifiability of different objects the of. View when you rotate the camera an aircraft can be described both in terms of angles and dimensions reflected/emitted.

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