Optimized Modulation Index Design and Receiving Data Performance Estimation of LEO Satellite TT&C System


KIPS Transactions on Computer and Communication Systems, Vol. 8, No. 3, pp. 367-372, Jun. 2001
10.3745/KIPSTC.2001.8.3.367,   PDF Download:

Abstract

This paper describes the determination method of optimum modulation index of the PM modulator and the performance estimation of received data for tracking, telemetry, and command of LEO satellite, which is utilized in the field of cartography, ocean color monitoring, biological oceanography, and space environments observation. KOMPSAT I, which is the first LEO satellite in Korea, was launched on Dec. of 1999, and works well. According to the link budget of TT&C system of KOMPSAT I satellite, the optimal modulation index of playback telemetry is determined at cross point of Eb/No margin and PFD margin and this value is 1.92 radians. And the estimated BER according to satellite pass time is the best at real-time mode and the worst at real-time plus range tone (RT RNG) mode. Therefore transmission sequence of telemetry data are determined such as BER sequence according to pass time, namely, real-time, playback, and real-time plus range mode.


Statistics
Show / Hide Statistics

Statistics (Cumulative Counts from September 1st, 2017)
Multiple requests among the same browser session are counted as one view.
If you mouse over a chart, the values of data points will be shown.


Cite this article
[IEEE Style]
D. L. Chang, "Optimized Modulation Index Design and Receiving Data Performance Estimation of LEO Satellite TT&C System," KIPS Journal C (2001 ~ 2012) , vol. 8, no. 3, pp. 367-372, 2001. DOI: 10.3745/KIPSTC.2001.8.3.367.

[ACM Style]
Dae Lg Chang. 2001. Optimized Modulation Index Design and Receiving Data Performance Estimation of LEO Satellite TT&C System. KIPS Journal C (2001 ~ 2012) , 8, 3, (2001), 367-372. DOI: 10.3745/KIPSTC.2001.8.3.367.