新的互补序列在雷达通信一体化中的应用

doi:10.12305/j.issn.1001-506X.2021.03.12

Abstract

Abstract:

The integration of radar and communication can effectively integrate the radio frequency (RF) resources of the system and realize target detection and communication by using RF front-end simultaneously. In allusion to the high range sidelobe caused by random communication data and the overlapped echoes of short range, a new expansion method by series-wound discrete Fourter transform (DFT) matrix is proposed. A novel scheme of integrated radar and communication based on complete complementary codes is designed. The scheme adopts the spread spectrum multi-carrier signal framework. Theoretical analysis and simulation results show that, the design can implement the detection of short range targets and achieve low-level range sidelobe, and satisfy the requirement of multi-user transmission and radcom based signal-sharing.

Key words: multi-functional integrated radio frequency system, intergation of radar and communication, signal-sharing, orthogonal frequency division multiplexing (OFDM), spreading spectrum technology

CLC Number:

TN955

Xiaobai LI, Ruijuan YANG, Wei CHENG, Jing LUO. Application of a novel complementary signal to integrated radar and communication[J]. Systems Engineering and Electronics, 2021, 43(3): 693-699.

Figures/Tables 10

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遮挡情况	分段脉压数据的截取起始时间	匹配滤波函数	脉压后距离段拼接/km
4t_b≤T_c≤8t_b	4t_b	取后4个码元进行匹配滤波	6~12
8t_b≤T_c≤16t_b	8t_b	取后8个码元进行匹配滤波	12~24
16t_b≤T_c≤32t_b	16t_b	取后16个码元进行匹配滤波	24~48
T_c≤32t_b	32t_b	取整个32码元进行匹配滤波	≥48

仿真参数	取值
调制方式	BPSK
通信多径数目	4
Oppermann序列	码长为33的32组序列
互补码序列族	(8, 4, 32)
子载波数目	32
仿真个数	10⁶

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Application of a novel complementary signal to integrated radar and communication

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