A hypersonic target coherent integration detection algorithm based on Doppler feedback

doi:10.21629/JSEE.2020.01.10

Journal of Systems Engineering and Electronics ›› 2020, Vol. 31 ›› Issue (1): 85-94.doi: 10.21629/JSEE.2020.01.10

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A hypersonic target coherent integration detection algorithm based on Doppler feedback

Lin LI^1,*(), Guohong WANG¹(), Dianxing SUN²(), Xiangyu ZHANG¹()

¹ Institute of Information Fusion, Naval Aviation University, Yantai 264001, China
² College of Electronic Science, National University of Defense Technology, Changsha 410073, China

Received:2019-05-20 Online:2020-02-20 Published:2020-02-25
Contact: Lin LI E-mail:fengzhite@126.com;wangguohong@vip.sina.com;sdxdd.hi@163.com;zxy627289467@sina.com
About author:LI Lin was born in 1991. He received his B.S. degree in 2014 and M.S. degree in 2016 from Naval Aeronautical and Astronautical University. Now he is a Ph.D. candidate in Naval Aviation University. His research interests are radar target detection and information fusion. E-mail: fengzhite@126.com|WANG Guohong was born in 1963. He received his M.S. degree from Xidian University in 1991 and Ph.D. degree from Beihang University in 2002. Now he is a professor and doctor advisor in Naval Aviation University. His research interests are anti-jamming of radar network, radar target detection and tracking, and information fusion. E-mail: wangguohong@vip.sina.com|SUN Dianxing was born in 1983. He received his M.S. degree in 2009 and Ph.D. degree in 2015 from Naval Aeronautical and Astronautical University. Now he is a post-doctoral researcher in National University of Defense Technology. His research interests are anti-jamming of radar network and information fusion. E-mail: sdxdd.hi@163.com|ZHANG Xiangyu was born in 1986. He received his M.S. degree in 2011 and Ph.D. degree in 2015 from Naval Aeronautical and Astronautical University. Now he is a lecturer in Naval Aviation University. His research interests are radar target tracking and information fusion. E-mail: zxy627289467@sina.com
Supported by:
the National Natural Science Foundation of China(61731023);the National Natural Science Foundation of China(61701519);the National Natural Science Foundation of China(61671462);the Distinguished Taishan Scholars in Climbing Plan;This work was supported by the National Natural Science Foundation of China (61731023; 61701519; 61671462) and the Distinguished Taishan Scholars in Climbing Plan

Abstract

Abstract:

The traversal search of multi-dimensional parameter during the process of hypersonic target echo signal coherent integration, leads to the problem of large amounts of calculation and poor real-time performance. In view of these problems, a modified polynomial Radon-polynomial Fourier transform (MPRPFT) hypersonic target coherent integration detection algorithm based on Doppler feedback is proposed in this paper. Firstly, the Doppler estimation value of the target is obtained by using the target point information obtained by subsequent non-coherent integration detection. Then, the feedback adjustment of the coherent integration process is performed by using the acquired target Doppler estimation value. Finally, the coherent integration is completed after adjusting the search interval of compensation. The simulation results show that the algorithm can effectively reduce the computational complexity and improve the real-time performance on the basis of the effective coherent integration of hypersonic target echo signals.

Key words: hypersonic target, coherent integration, non-coherent integration, Doppler estimation, feedback adjustment

Lin LI, Guohong WANG, Dianxing SUN, Xiangyu ZHANG. A hypersonic target coherent integration detection algorithm based on Doppler feedback[J]. Journal of Systems Engineering and Electronics, 2020, 31(1): 85-94.

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References 22

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Simulation parameter	Value
Signal pulse width/$\mu$s	$T_P = 500$
Bandwidth/MHz	$B = 0.5$
Radar carrier frequency/GHz	$f_0 = 1$
Sampling frequency/MHz	$f_s = 1$
Pulse repetition frequency/Hz	$f_{\rm PRF} = 500$
Radar range measurement error/m	$\sigma _r = 200$
Radar scanning period/s	$T_s = 2$

Simulation parameter	Value
Initial radial range between the target and the radar/km	$R_0 =200$
Initial radial velocity/(m/s)	$v_T {=} 3~400$
Initial radial acceleration/(m/s$^2$)	$a_T = 30$
Initial second-order radial acceleration/(m/s$^3$)	$\dot {a}_T = 10$
Maximum radial velocity/(m/s)	$v_{T\max } {=} 6~800$
Maximum radial acceleration/(m/s$^2$)	$a_{T\max } = 200$
Maximum second-order radial acceleration/(m/s$^3$)	$\dot {a}_{T\max } =200$

Performance index	Pulse integration number $M$
Performance index	128	64	32	16
Detection probability	1.00	1.00	0.80	0.14
Integration peak	171.64	89.44	44.06	22.93
Running time/s	179.88	28.86	10.10	2.92

Calculation amount	Pulse integration number
Calculation amount	128	64	32	16
Running time of MPRPFT algorithm/s	179.88	28.86	10.10	2.92
Running time of PRPFT algorithm/s	2~891.14	365.29	117.56	21.57
Efficiency improvement index $n$	16.07	12.66	11.64	7.39

Performance index	Feedback adjustment frame number $M$
Performance index	4	5	6	7	8	9	10
Detection probability	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Running time/s	28.86	23.19	20.63	18.56	18.01	15.87	15.43
Allowable error $\sigma _{v_T } $/(m/s)	125.00	100.00	83.33	71.43	62.50	55.55	50.00

A hypersonic target coherent integration detection algorithm based on Doppler feedback

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