Satellite Tracking

Tracking a satellite

Tracking a satellite

Online real-time satellite tracking:
• N2YO http://www.n2yo.com/
• International Space Station only http://www.issfanclub.com/

Free satellite tracking software:
• SimpleSat Look Down http://www.tomdoyle.org/SimpleSatLookDown/
• Gpredict http://gpredict.oz9aec.net/
• Orbitron http://www.stoff.pl/

Keplerian elements (‘Keps’) provide a mathematical description of a Satellite’s orbit. Satellite tracking software reads the Keplerian elements and provides graphical and/or tabular orbital predictions. Keplerian data are most commonly provided in the AMSAT and the Space Command / NASA Two-Line Element (TLE) format. You can also use the “kep-char” Excel spreadsheet to determine orbital characteristics of a set of Keplerian elements.

The North American Aerospace Defence Command (NORAD) Two-Line Element Set Format http://celestrak.com/NORAD/documentation/tle-fmt.asp

Keplerian Two Line Elements (TLEs) ‘Keps’:
• New satellites launched in past 30 days http://celestrak.com/NORAD/elements/tle-new.txt
• CubeSats http://celestrak.com/NORAD/elements/cubesat.txt
• Experimental satellites http://celestrak.com/NORAD/elements/x-comm.txt
• Engineering satellites http://celestrak.com/NORAD/elements/engineering.txt
• Amateur radio satellites http://www.amsat.org/amsat/ftp/keps/current/nasa.all

Adding new satellites to SatPC32 and Gpredict http://amsat-uk.org/2013/11/23/adding-new-satellites-to-satpc32/

A directional satellite tracking antenna can be made using just a small Yagi and a TV antenna rotator. Bob Bruninga WB4APR suggests fixing the Yagi to point 15 degrees above the horizon to produce good results for both satellite and terrestrial working. Read Bob’s article at http://aprs.org/LEO-tracking.html

The One True Rule for Doppler Tuning http://www.amsat.org/amsat/features/one_true_rule.html

Application of Amateur Radio in Geophysics: Calculation of a Satellite’s Orbital Velocity from Doppler Frequency Shift by Dr. Carol F. Milazzo, KP4MD http://www.qsl.net/kp4md/doppler.htm

Satellite Doppler Spreadsheet