Citation
Abstract
Tracking loops and modulation formats for DSN telemetry rates in the tens of megasymbols per second region are considered. It is shown that for high rate telemetry, subcarriers should not be used and suppressed carrier modulation should be used. It is then shown that the current DSN receivers can be used for tracking suppressed carrier signals with only minor modifications and that normal doppler tracking operations are unaffected by such changes. Finally, we show that the existing DSN, augmented by a megasymbol telemetry demodulator assembly can be used to process simultaneous high rate telemetry and ranging signals using an interplex modulation format which results in significant advantages to both telemetry and ranging.
Details
- Volume
- 42-44
- Published
- April 15, 1978
- Pages
- 117–124
- File Size
- 611.1 KB