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Satellite Tracking for UAE Field Campaign Support

Satellite Tracking for UAE Field Campaign Support. Rob Levy. 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?. What I have done.

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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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