Citation
Abstract
For future space very long baseline interferometry (SVLBI) programs, ways have been studied for raising instrument sensitivity by increasing the baseline mission effective 256-MHz observation bandwidth, and correspondingly the spacecraft downlink data rate, by a multiple of between two and four. However, the challenge is to accomplish this within the constraints of the 37- to 38-GHz downlink band as well as the spacecraft transmitter restrictions. This article is concerned with the sensitivity gains obtainable through higher data rates, including considerations for an uncommon correlator mode, as well as a non-power-of-two sampling rate increase. The article concludes with a summary of the practical augmentations needed on spacecraft and ground implementations for increasing sensitivity relative to the baseline mission.
Keywords
Details
- Volume
- 42-149
- Published
- May 15, 2002
- Pages
- 1–5
- File Size
- 79.2 KB