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Satellite Tracking for UAE Field Campaign Support

Learn how field campaigns and satellite data validation are interconnected, and how surface and airborne measurements can be strategically located and timed to coincide with satellite data. Discover the benefits of using "Sattrack" freeware code and its modifications in field planning. Additional information and input location requirements are discussed.

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Satellite Tracking for UAE Field Campaign Support

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  1. Satellite Tracking for UAE Field Campaign Support Rob Levy

  2. Why do we care? • Field campaigns validate/improve/etc satellite data • Surface and airborne measurements are integral • Where do you locate and time these measurements to coincide with satellite data?

  3. What I have done • Really, not much… • Downloaded freeware code “Sattrack”, the same code that powers NASA’s Earth Observatory Satellite Overpass Predictor • Modified output in order to calculate satellite information useful for field planning. • Created a script so that all calculations are done “automatically…” (with the properly formatted input)

  4. Satellite Overpass Predictor http://earthobservatory.nasa.gov/MissionControl/overpass.html

  5. Sattrack output /bin/sh -c "/WWW/site-bin/SatTrack/run/sattrack -b 'UTC' 'Greenbelt_(GSFC),_MD,_USA' 25994 tlex.dat norad shortpr 15Jul04 0:0:0 auto 1 0 nohardcopy" Satellite #25994 : TERRA Element Set Number: 303 (Orbit 24322) Element Set Epoch : 14Jul04 12:25:47.635 UTC (1.3 days ago) Orbit Geometry : 698.72 km x 700.48 km at 98.194 deg Propagation Model : SGP4 Ground Location : Greenbelt (GSFC), MD, USA Time is shown in : UTC (+0.00 h) OVERPASS SUMMARY: Date (UTC) Time (UTC) of Azimuth at Peak Height Vis Orbit Rise Peak Set Ris Pk Set Elev at Pk Thu 15Jul04 01:43:26 01:49:06 01:54:54 119 64 8 14.1 690 NVV 24331 03:19:22 03:26:21 03:33:20 174 259 344 61.4* 693 NVV 24332 05:01:13 05:04:55 05:08:44 241 274 308 4.0 693 NVV 24333 15:20:08 15:26:51 15:33:42 22 97 174 36.8 693 DDD 24340 16:58:10 17:04:22 17:10:41 357 294 229 22.1 690 DDD 24341 Fri 16Jul04 00:52:48 00:55:02 00:57:32 73 54 32 1.8 687 DDD 24345 We need more information… (glint angle, scattering angle)

  6. Output data for UAE Al Khazana: Lat = 24.16 N, Long = 55.10 E

  7. Other relevant info • Need input locations (AERONET lat/long for example) • Satellite view zenith is an approximation (90 - elevation), therefore glint and scattering angles are also approximate. • Need to update “two-line-elements” (tle) before running • Valid for any satellite • Charles Gatebe has my code

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