| 摘要 |
<p>The invention concerns the telemetry, command and ranging link of a satellite, by using on the uplink, that is for command and the uplink satellite ranging signal, a spread-spectrum transmission. For the downlink, that is for telemetry and the downlink ranging signal, by using a subcarrier modulation. Thus it is possible to avoid jamming for an uplink and to provide colocation; and on the downlink, the use of subcarrier modulation enables the use of existing equipment and known solutions.</p> |
