基于串行时分CC-CDMA的雷达通信一体化

doi:10.11959/j.issn.1000-436x.2023183

Abstract

Abstract:

In order to improve the performance of target detection and solve the problem of self-interference and mutual interference between multiple targets and multiple users, a radar communication integration system based on serial time division CC-CDMA was proposed.Firstly, the code division multiplexing mechanism was used to adjust the spread spectrum sequence of different subcodes in the complementary code to the signals on different time slices at the transmitter through the generalized PTM sequence to generate the integrated signal of radar communication.Secondly, the receiving end of the radar processed the data twice, and the point-by-point minimization method was used to fuse the processing results to improve the target detection capability of the radar subsystem.Lastly, at the receiving end of communication, the subcodes corresponding to the spread spectrum sequence at the transmitting end were used to de-amplify the received signals, and the bit error ratio was further reduced by interleaved coding and Hamming coding.Simulation results show that compared with other radar communication integration systems, the proposed system has lower bit error rate, higher Doppler resolution and better side lobe suppression performance.

Key words: dual functional radar communication, code division multiplexing, serial time, spread spectrum, GPTM sequence

CLC Number:

TN957.51

Yubo LI, Jian CUI, Junchao FENG, Xiaoyu CHEN. Dual functional radar communication based on serial time division CC-CDMA[J]. Journal on Communications, 2023, 44(9): 127-138.

Figures/Tables 11

目标	时延/µs	多普勒/rad
目标1	$τ_{1} = 12.4$	$f_{d_{1}} = 1.3$
目标2	$τ_{2} = 17.2$	$f_{d_{2}} = - 0.8$
目标3	$τ_{3} = 17.2$	$f_{d_{3}} = - 1.2$
目标4	$τ_{4} = 12.7$	$f_{d_{4}} = 0.5$
目标5	$τ_{5} = 8.4$	$f_{d_{5}} = - 1.9$
目标6	$τ_{6} = 21.4$	$f_{d_{6}} = 2.3$

References 22

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