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Topic: Slant range

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	Slant Range Discussion
		At greater distances the slant ranges are closer to the true horizontal ranges and the compression effect is less severe.
		As discussed in the "Slant Range Distortion" section, the distorting effect is greatest at the shorter ranges from the sonar.
		The measured slant range is the hypotenuse,measured as 27 meters, and the horizontal offset or range is the other leg (side scan sonar always assumes a flat bottom).
	www.l-3klein.com /operator_tips/optips/slantrange/slantrange.html (420 words)

	exterior ballistics
		In other words, pretend that the inclined target is at a horizontal distance equal to the slant range distance multiplied by the cosine of the inclination angle, and aim as if the target were really at that horizontal position.
		As Tables 1 through 8 show, the range distances chosen for the evaluation are grouped nearer to the firing point and then farther from the firing point, with a single range distance in the middle at 500 yds.
		Note that we have chosen one range distance, 875 yds, for the tables because the maximum effective range for the sniper rifles presently used by the U.S. Army (M24) and U.S. Marine Corps (M40A3), both using the 7.62 x 51 mm NATO cartridge, is 800 meters (875 yds).
	www.exteriorballistics.com /ebexplained/article1.html (4535 words)

	SLAR System Operations
		The slant range (SR), or distance between the transmitter and the object, is calculated according to the equation:
		The pulse length dictates the spatial resolution in the direction of energy propagation (this is known as the "range direction"), while the antenna beam width determines the resolution cell in the flight, or "azimuth" direction.
		Slant range resolution does not vary with increasing distance from the aircraft, but ground range does.
	www.geo.hunter.cuny.edu /terrain/radarii.html (483 words)

	Slant range -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-04)
		In ((often plural) systems used in transmitting messages over a distance electronically) telecommunication, slant range is the line-of-sight distance between two points, not at the same level relative to a specific datum.
		The slant range is the hypotenuse of the triangle represented by the altitude of the airplane and the distance between the radar antenna and the airplane's ground track (the point on the Earth at which it is directly overhead).
		In the absence of altitude (A message received and understood) information, the aircraft location would be plotted farther from the antenna than its actual ground (A bar or bars of rolled steel making a track along which vehicles can roll) track.
	www.absoluteastronomy.com /encyclopedia/s/sl/slant_range.htm (120 words)

	SRTOGR -- Slant Range to Ground Range Conversion
		DELAY is used to determine the slant range distance in metres to the first input pixel in the SAR image.
		Since DELAY is 43.1 microseconds, the slant range distance to the first ground pixel is 6460 metres, which is LESS than the height of the aircraft everywhere on the slant range image.
		On the original slant range image, one can see that about the first 70 slant range pixels are zeroes, which means that there are about 70 times 4 = 280 metres from the first slant range pixel to the ground.
	www.pcigeomatics.com /cgi-bin/pcihlp/SRTOGR (1218 words)

	Remote Sensing Tutorial Page 8-2
		At the radar antenna, the angle between a horizontal plane (essentially, parallel to a level surface) and a given slant range direction is called the depression angle β (beta) for any point along that directional line (a mnemonic for that is "lowering your head down from staring forward when depressed").
		This range resolution is effectively the minimum distance between two reflecting points along the azimuthal direction that the radar can identify as separate, at that range.
		This range resolution (effectively, the minimum distance between two reflecting points along the look direction at that range at which these may be sensed as separate and distinct) gets poorer outward for a specific pulse duration.
	rst.gsfc.nasa.gov /Sect8/Sect8_2.html (1589 words)

	Remote Sensing of the Environment : Sensors: Image Processing Library
		Slant range is a measure of the radial distance of the image object from the radar.
		Near range in the images is closest to the aircraft and far range is furthest away.
		Note that this is not the same as the range or azimuth pixel spacing which is contained in the variable format header of the AIRSAR data.
	www.csr.utexas.edu /rs/sensors/airsar.html (516 words)

	Appendix B. Image Geometry (Site not responding. Last check: 2007-11-04)
		The slant range to a pixel at range coordinate i, R
		is the slant range at range pixel coordinate i,
		is the slant range at pixel coordinate i, and R
	earth.esa.int /rootcollection/sysutil/esc_b.html (387 words)

	Slant range to ground range correction to minimize scale differences
		An F5/F3 stereo pair is shown in slant range presentation.
		As a result of the slant range presentation and the opposite side stereo configuration, only small local areas of this image pair can be viewed in stereo.
		This is due to the ground range presentation of the image pair.
	www.ccrs.nrcan.gc.ca /resource/tutor/stereo/chap7/chapter7_13_e.php (341 words)

	[No title]
		Specifies the pixel spacing of the input slant or ground range radar image in metres, for both horizontal (range) and vertical (azimuth) directions.
		DELAY is used to determine the slant range distance in metres to the first input pixel in the radar image.
		Specifies the assumed aircraft height in metres above the ground, when the input radar data is ground range (instead of slant range).
	www.pcigeomatics.com /cgi-bin/pcihlp/STG\|PARAMETERS (614 words)

	Layover, Shadow Masks and Local Incidence Angle Maps
		In the first loop, for each layover region the slant ranges for the begining and end of the layover region are recorded.
		The beginning of a single layover region is marked by a decrease of the slant range.
		The end of a layover region is marked by the next occuring slant range which is higher than the slant range found before the beginning of the decrease.
	www.eecs.umich.edu /~josefk/PUBLICATIONS/igarss96-Geocoding/node3.html (579 words)

	Targeted Obsersations (Site not responding. Last check: 2007-11-04)
		In the second Cydonia observation from Orbit #239, the slant range to the target site is 196 miles (317 km), as compared to 275 miles (444 km) in the first observation on Orbit #220.
		The slant range is not a parameter controlled by the flight team.
		Since the slant range is smaller in the second image, the resolution is 8.13 feet (2.48 meters) per pixel as compared to 14.1 feet (4.3 meters) per pixel in the first image.
	mars.jpl.nasa.gov /mgs/target/update4-14.html (274 words)

	Slant Range and Ground Range
		The slant range to ground range distortion is much more pronounced in airborne SAR systems than it is in satellite SAR systems.
		This is a result of the difference in depression angles and the range of the depression angles between airborne and spaceborne SARs.
		The slant range to ground range correction may not be necessary in order to create an effective stereo pair from satellite SAR imagery.
	www.ccrs.nrcan.gc.ca /resource/tutor/stereo/chap5/chapter5_8_e.php (198 words)

	Historian's Corner: Popcorn, Napalm and the Weather pg.6 - 39th BG
		Range Circle is set for the precomputed slant range from aircraft to Aiming Point.
		A new slant range circle is set at a precomputed slant range, which corresponds to a 64 degree sighting angle to target.
		At “Bombs Away” the screen is reset to a 50 Nautical Mile range and control is returned to Navigator and Airplane Commander.
	39th.org /39th/hc/popcorn6.htm (596 words)

	Ian's Project (Site not responding. Last check: 2007-11-04)
		The effect of the slant range effect is not immediately apparent because the image intensity for longer delay times is diminishes considerably.
		The slant range effect correction causes pixels corresponding to short times of flight to appear later in the corrected image than they do in the original.
		Both the slant range adjustment and angle dependent intensity adjustment were performed using the program slant7.c.
	www.cee.hw.ac.uk /~mjc/texture/ian-borthwick/effect.html (550 words)

	VWP Responses to Changes in VAD OSR (Site not responding. Last check: 2007-11-04)
		Range rings are in nautical miles, and each OSR is plotted in a different color as indicated in the legend of the graph.
		Where two plots are identical, the plot of the longer OSR overwrites the shorter one, as in the case where the 150 km OSR plot overwrites the one for 75 km from 1,000 to 4,000 feet.
		This data set is empirical, that is, the slant ranges used are those actually reported in the VAD products for these heights and ranges on a given day.
	www.srh.noaa.gov /hgx/projects/vad2/32domain.htm (416 words)

	X-SAR Single Look, Slant Range, Complex Data Product (SSC, held at DLR/DFD)
		Data Set Content: The SSC data set contains range and azimuth compressed SAR image data which are complex and kept in the slant range representation.
		Range lines are deskewed to zero Doppler lines and organised in ascending time reference.
		The data are kept in the slant range domain, i.e.
	gcmd.gsfc.nasa.gov /records/GCMD_DFD-X-SAR.SAR.SSC.html (1013 words)

	National Weather Service Forecast Office Houston, Galveston - Research Projects - VWP Responses to Changes in VAD OSR (Site not responding. Last check: 2007-11-04)
		The objective of the VAD algorithm is to sample radial velocities in a circle about the radar at constant elevation and slant range where the combined beam elevation and slant range intersect a desired reporting altitude.
		The only cautions currently provided by OSF regarding the algorithm are that the use of very short slant ranges may acquire radial velocity samples contaminated by ground clutter and that Doppler resolution inherently decreases with range.
		This is what the "optimum" part of "optimum slant range" is all about, and leaving this element permanently assigned to the 88D's default settings can frequently lead to VWP products which seem curiously unrepresentative or innaccurate.
	www.srh.noaa.gov /hgx/projects/vad2/main.htm (2110 words)

	Chelsea Technologies Group - Custom Design
		This slant range processor and synchronised pinger system can be interfaced with a vessel's sonar to provide a synchronised pinger or a synchronised receiver that can display slant range.
		This system is used to measure the slant range between the towed body of VASS and the vessel under test.
		Range resolution is ultimately determined by the transmission bandwidth and so in a conventional Narrow Band CW system the pulses must be short and the receiver bandwidth large to achieve good range resolution.
	www.marine-acoustics.co.uk /CustomDesign.htm (1472 words)

	Search:slant - OXiDE (Site not responding. Last check: 2007-11-04)
		slant of a line drawn from the outer corner of the eye to the inner corner is called the palpebral slant.
		SLANT 6 played their first show in the Summer of 1992 with Myra Power (Lucky 13) on bass...
		Slant 6 took their name from an in-line six cylinder engine...
	search.oxide.com /_1_UC5TR3028OZI5T__fma.main1/search/web/slant/61/20/... (380 words)

	SLANT - modern contemporary designer furniture, delivery to UK and Ireland
		SLANT - modern contemporary designer furniture, delivery to UK and Ireland
		SLANT regrets to announce that discussions about the future development of the business under the SLANT name have been discontinued.
		SLANT would like to thank all customers for their support.
	www.slant.co.uk (71 words)

	Active Skim View of: 3. Thermal-Neutron and Fast-Neutron Measurements
		At the more distant slant ranges, where the line-of-sight angle is fairly small, it is also possible that the low-energy fluence is greatly ' + 'underestimated by DS86 because of increased scattering 5 Many of the investigators reporting on thermal-neutron activation measurements in ' + 'cobalt or europium estimated the DS86 (calculated)
		This is related loosely to the notion that the measurements as a function of slant range, in a semilogarithmic ' + 'plot, have a shallower slope, corresponding to a greater “relaxation length,” than the calculated values.
		This is related loosely ' + 'to the notion that the measurements as a function of slant range, in a semilogarithmic plot, have a shallower slope, corresponding to a greater “relaxation ' + 'length,” than the calculated values.
	www.nap.edu /nap-cgi/skimit.cgi?isbn=0309075599&chap=31-59 (10394 words)

	SA-7 GRAIL (9K32M Strela-2)
		Although the SA-7 is limited in range, speed, and altitude, it forces enemy pilots to fly above minimum radar limitations which results in detection and vulnerability to regimental and divisional air defense systems.
		The SA-7a had a slant range of 3.6 km and a kill zone between 15 and 1500 meters in altitude, with a speed of about 430 meters per second (Mach 1.4).
		The Anza MKI missiles, which have a range of 4.2 km, were manufactured and handed over to the military forces in 1990.
	www.fas.org /man/dod-101/sys/missile/row/sa-7.htm (654 words)

	THE A SCOPE
		The actual range of a target from the radar, whether on the ground, in the water, or in the air is
		Range is displayed by means of a linear time-base sweep, starting from a given point or line at a
		The origin of the range sweep may be on or off the tube face.
	www.tpub.com /content/neets/14190/css/14190_112.htm (493 words)

	Slant Range to Ground Range conversion parameters (Site not responding. Last check: 2007-11-04)
		The Slant Range-to-Ground Range (SR/GR) conversion coefficients may be updated more than once per product (or slice).
		The SR/GR coefficients used on range lines between two updates are found by linear interpolation between the updated and previous values.
		Slant range = S0 + S1(GR-GR0) + S2 (GR-GR0)2 + S3(GR-GR0)3 + S4(GR-GR0)4, where GR is the ground range distance from the first pixel of the range line.
	envisat.esa.int /dataproducts/asar/CNTR6-6-17.htm (368 words)

	Eurimage
		Imagery is built up from the time delay and strength of the return signals, which depend primarily on the roughness and dielectric properties of the surface and the range from the satellite.
		Wave Mode operation of the SAR measures the changes in radar reflectivity of the sea surface due to surface waves, and provides 5 x 5 km images of 10 meter resolution at intervals of 200 km along track.
		ERS data are subject to speckle, SAR antenna pattern loss and range-spreading loss, and are acquired in slant range.
	www.eurimage.com /products/ers.html (1054 words)

	IFFT Synthetic Range Profiling Approach
		Especially at VHF frequencies it is very difficult to obtain high range resolutions, because the effective pulse bandwidth required would amount to a large percentage of the centre frequency.
		After briefly introducing the theory of synthetic range profiling as applied to SAR, this paper goes on to discuss the synthetic range profile of an A320 airbus, which serves to demonstrate the feasibility of synthetic range profiling.
		In contrast with data obtained from pulse-compression radars, the data is already compressed in the range direction at this stage, since the slant-range resolution has been obtained synthetically using the inverse discrete Fourier transform.
	rrsg.ee.uct.ac.za /members/rlord/ifft_srp/ifft_srp.html (1574 words)

	USGS MIPS Slr2gr Docmentation
		This program corrects for both water column and slant range geometry problems in a sidescan sonar image (i.e., it removes the blank/non-bottom pixels at the center of the sonar image(water column) and transforms pixels whose positions are based on time/slant range geometry to ground range positions/geometry).
		This parameter identifies the desired output ground range pixel resolution in the across track direction.
		Decreasing the near range or increasing the far range angle will cause data/pixels to be thrown out at the corresponding edge.
	terraweb.wr.usgs.gov /TRS/software/mips/link/slr2gr.html (384 words)

	Table 3C-4. DME-42 Diagnostics
		that is 100 nm ground range from a station
		range and ground range to be nearly equal.
		range of 10 nm from the station, the
	tpub.com /content/lasers/TM-1-1510-225-10/css/TM-1-1510-225-10_492.htm (370 words)

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