Study of PN-code Capture Method with High Dynamic and Low SNR in Near Space

DOI

10.2991/lemcs-15.2015.267How to use a DOI?

Keywords

Near space; FFT; PN-code capture; High dynamic; Low SNR

Abstract

Considering the requirement of building near space tt&c system, it designed a parallel PN-code capture method based on FFT. First, it gave a clear derivation of the principle of parallel PN-code capture method, analyzed the capture performance in detail, and finally proved the feasibility of the method through simulation experiment. This method on the one hand weakens the influence of the doppler frequency, and reduces the capture dimension from 2 to 1. At the same time, it achieved the related operations, the relative value of local code and receiving yards was acquired. By this, some special requirements were satisfied and the circuit was simplified, capture speed was improved very much. On the whole, the method overcomes the poor performance under low SNR of traditional capture method, has a good prospect of engineering application.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ke Sun
AU  - Xiaomin Hou
AU  - Qiang Zhao
PY  - 2015/07
DA  - 2015/07
TI  - Study of PN-code Capture Method with High Dynamic and Low SNR in Near Space
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 1337
EP  - 1342
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.267
DO  - 10.2991/lemcs-15.2015.267
ID  - Sun2015/07
ER  -