约束准则下扩展时差直方图脉冲分选配对方法

doi:10.19665/j.issn1001-2400.2019.06.015

Abstract

Abstract:

In multi-station electronic reconnaissance systems, pulse sorting and pairing are the premise of accurate emitter localization. Considering the problem of a high false alarm rate and a high missing alarm rate for sorting the pulse with an ultra-low pulse repetition frequency in conventional time difference of arrival (TDOA)-based sorting methods, this paper proposes a pulse sorting and pairing method based on the constrained extended TDOA histogram. In this method, a constraint condition with respect to pulse parameters is first introduced to obtain the valid TDOA distribution. Then, the extended iteration operation is used to complete the pulse sorting and pairing of each emitter. After reducing the chance of irrelevant pulse pairing by the constraint condition, the proposed method fundamentally decreases the number of false TDOA and noise TDOA, and effectively suppresses the generation of false emitters. Numerical experiments indicate that compared with the existing methods, the proposed method can significantly improve the performance of TDOA sorting and can achieve the accurate sorting and pairing for extremely few pulses with an ultra-low pulse repetition frequency, even for single pulses.

Key words: electronic reconnaissance, pulse sorting and pairing, Time difference of arrival, constraint condition

CLC Number:

TN971

LIU Zhixin,ZHAO Yongjun. Pulse sorting and pairing based on the constrained extended TDOA histogram[J].Journal of Xidian University, 2019, 46(6): 102-111.

Figures/Tables 13

References 17

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辐射源	载频/MHz	载频类型	脉宽/μs	PRI/μs	PRI类型	幅度	脉冲个数	真实时差/μs	重频属性
1	2 500	定频	11	433	固定	1	230	-300	高重频
2	2 900~3 050	跳频	15	477,487,555,677	参差	1	183	210	高重频
3	3 000	定频	13	660	固定	2	150	-200	高重频
4	2 600	定频	14	1 380(±10%)	抖动	1	73	-150	常规重频
5	3 100~3 200	跳频	15	1 344~1 433	滑变	1	65	-100	常规重频
6	2 100~2 150	跳频	18	10 921	固定	1	5	-50	超低重频
7	2 300	定频	14	13 268	固定	1	3	80	超低重频
8	2 400	定频	10	25 121	固定	1	1	-10	单脉冲

辐射源序号	真实脉冲数	笔者提出算法			文献[13]中的算法
辐射源序号	真实脉冲数	正确分选脉冲数	漏选脉冲数	正确率/%	正确分选脉冲数	漏选脉冲数	正确率/%
1	230	229	1	99.6	229	1	99.6
2	183	182	1	99.5	181	2	98.9
3	150	150	0	100	149	1	99.3
4	73	72	1	98.6	69	4	94.5
5	65	65	0	100	61	4	93.8
6	5	5	0	100	5	5	100
7	3	3	0	100	3	3	100
8	1	1	0	100	0	1(漏警)	0
9	0(虚警目标)	未检测到			46(虚警)	0	0
10	0(虚警目标)	未检测到			51(虚警)	0	0
11	0(虚警目标)	未检测到			46(虚警)	0	0

指标	文中算法	文献[9]	文献[10]	文献[13]	文献[14]	文献[15]	文献[16]	文献[17]
平均运行时间/s	21.42	13.31	9.80	20.65	19.00	21.05	33.70	35.18
平均分选正确率/%	94.90	57.99	60.96	81.13	61.00	80.39	72.10	93.43

Pulse sorting and pairing based on the constrained extended TDOA histogram

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