A technique to determine uplink range calibration due to charged particles
Abstract
A technique is presented to determine uplink range change due to line-of-sight charged particles using downlink S/X range and Doppler and 2-way DRVID data. The line-of-sight relative charged particle distribution is first estimated from these data by a point matching method. The uplink range change is then synthesized by the weighted sum of the delayed downlink range changes. Simulation analysis shows 2 to 6 cm agreement agreement between the true and the synthesized uplink range changes. Demonstration using Viking 1975 radio metric data shows 4 to 22 cm consistency between the uplink range calibration solutions synthesized from S-Drivid and X-DRVID. The consistency is an order of magnitude superior to that equating uplink and downlink effects.
- Publication:
-
The Deep Space Network
- Pub Date:
- October 1977
- Bibcode:
- 1977dsn..nasa...57W
- Keywords:
-
- Charged Particles;
- Doppler Radar;
- Deep Space Network;
- Simulation;
- Superhigh Frequencies;
- Ultrahigh Frequencies;
- Communications and Radar