Citation
Abstract
Currently, instrumental phase dispersion is a large error term in the DeltaDifferential One-way Ranging (DDOR) error budget. This error arises from the difference in instrumental response to the spectral difference between the narrowband spacecraft signal and the broadband quasar signal. This error term can be reduced in modern transponders by implementing a pseudo-noise (PN) spread spectrum DOR signal instead of the classic sinusoidal DOR signal. This paper presents the methodology to post-process such PN spread spectrum signals and to generate DDOR observables for use in spacecraft navigation. This is now an operational capability in the Deep Space Network (DSN) and is expected to be used for support of CubeSat missions flying with Artemis I and carrying the Iris 2.2 radio.
Details
- Volume
- 42-226
- Published
- August 15, 2021
- Pages
- 1–18
- File Size
- 1.1 MB