ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Design of high precision regenerative ranging codes with long unambiguous ranging distance
Received date: 2023-08-11
Revised date: 2023-10-26
Accepted date: 2023-11-10
Online published: 2023-12-07
Supported by
National Natural Science Foundation of China(62031017);The Key Research and Development Program of Zhejiang Province(2023C01003)
The challenge of deep space ranging is to obtain high precision distance measurements over long two-way distance and at low signal-to-noise ratios. The regenerative ranging system improves the downlink signal-to-noise ratio by approximately 30 dB by regenerating the ranging code in the spacecraft. However， the known regenerative ranging codes fail to meet the essential unambiguous distance requirements for future deep space missions. Firstly， the relationship between the combining function and the ranging error is systematically analyzed， and the method for reducing the ranging error by changing the combining function is proposed. New ranging codes are designed with m sequence and the new combining functions. A total of 8 new ranging codes are proposed. The ranging error variance is reduced by 0.28–3.78 dB compared to the known ranging codes. The unambiguous ranging distance is increased from 75 000 kilometers to 1.17–178.84 million kilometers， expanding by 15–2 384 times. One of the new ranging codes is fully balanced with a DC component of 0. The simulation results demonstrate that the new ranging code can provide higher precision distance measurement support for future deep space communication and deep space exploration over longer distances.
Yanan XI , Xiaoyu DANG , Sai LI . Design of high precision regenerative ranging codes with long unambiguous ranging distance[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(12) : 329434 -329434 . DOI: 10.7527/S1000-6893.2023.29434
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