Retrieving Doppler Frequency via Local Correlation Method of Segmented Modeling

The high accuracy radio Doppler frequency is critical for navigating a deep space probe and for planetary radio science experiments. In this paper, we propose a novel method based on the local correlation of segmented modeling to retrieve Doppler frequency by processing an open-loop radio link signa...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2021-07, Vol.13 (14), p.2846
Main Authors: Chen, Lue, Ping, Jinsong, Cao, Jianfeng, Liu, Xiang, Wang, Na, Wang, Zhen, Zhu, Ping, Wang, Mei, Man, Haijun, Fan, Fei, Lu, Weitao, Sun, Jing, Han, Songtao
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Bandwidths
Chinese space program
Deep space
Doppler
frequency retrieving
Ground stations
Integration
local correlation
Mars exploration
Mars Express (ESA)
Mars missions
Model accuracy
Modelling
open-loop
Orbit determination
Radio signals
Remote sensing
Science
Signal processing
Signal to noise ratio
Space exploration
Space stations
Superhigh frequencies
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Summary:The high accuracy radio Doppler frequency is critical for navigating a deep space probe and for planetary radio science experiments. In this paper, we propose a novel method based on the local correlation of segmented modeling to retrieve Doppler frequency by processing an open-loop radio link signal from one single ground station. Simulations are implemented, which prove the validity of this method. Mars Express (MEX) and Tianwen-1 observation experiments were carried out by Chinese Deep Space Stations (CDSS). X-band Doppler frequency observables were retrieved by the proposed method to participate in orbit determination. The results show that the accuracy of velocity residuals of orbit determination in open-loop mode is from 0.043 mm/s to 0.061 mm/s in 1 s integration; the average accuracy of Doppler frequency is about 3.3 mHz in 1 s integration and about 0.73 mHz in 60 s integration. The Doppler accuracy here is better than that of the digital baseband receiver at CDSS. The algorithm is efficient and flexible when the deep space probe is in a high dynamic mode and in low signal to noise ratio (SNR). This will benefit Chinese deep space exploration missions and planetary radio science experiments.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs13142846