多频带互相干处理中多目标相位补偿方法

doi:10.12305/j.issn.1001-506X.2022.10.11

Abstract

Abstract:

There are targets with different velocities in the radar echoes and Doppler phase difference between multi-band signals is dependent on velocity, which cannot be compensated by multiplying the uniform fixed phase and linear phase. This paper proposes a Doppler phase compensation method based on Keystone transform to solve this problem. This method defines a new slow time variable, which scales the slow time axis as a function of fast frequency to complete the Doppler phase compensation for different velocity targets at the same time. The effectiveness of the algorithm is verified by simulation analysis, which provides a method for mutual-coherence processing in multi-band and multi-target signal coherent processing.

Key words: multi-band, multi-target, mutual-coherence processing, Keystone transform

CLC Number:

TN958

Ning WANG, Xiaode LYU, Miaomiao LI, Zhongsheng LIU. Multi-target phase compensation method for multi-band mutual-coherence processing[J]. Systems Engineering and Electronics, 2022, 44(10): 3083-3089.

Figures/Tables 10

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References 30

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信号序号	带宽/MHz	载频/GHz	脉冲宽度/μs	PRI/μs	目标时延/μs与速度/(m·s^-1)	采样频率/MHz
1	100	1	20	800	(1, 200)	1.2×130
2	130	2	24	500	(1, 200)	1.2×130

信号序号	带宽/MHz	载频/GHz	脉冲宽度/μs	PRT/μs	目标时延/μs与速度/(m·s^-1)	采样频率/MHz
1	100	1	20	800	(1, 200) (1+δ, 200) (1+5δ, 150)	1.2×130 1.2×130 1.2×130
2	130	2	24	500	(1, 200) (1+δ, 200) (1+5δ, 150)	1.2×130 1.2×130 1.2×130

信号	脉冲数	带宽/MHz	载频/MHz	脉冲宽度/μs	PRI/ms	采样频率/GHz
实测数据	7	B	f	T	P	1.5
模拟数据	7	B	f+8	T－10	P－0.5	1.5

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Multi-target phase compensation method for multi-band mutual-coherence processing

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