基于匹配滤波器联合设计的室内场目标特性测量方法

doi:10.12305/j.issn.1001-506X.2026.01.07

Abstract

Abstract:

Interrupted transmitting and receiving （ITR） can cause false peaks in range profiles, and when the ITR of the pulse signal is conducted, the real and false peaks in the range profile may be overlapped for wideband signal. To solve this problem, a joint ITR and matched filter design method focusing on measuring the characteristics of target is proposed. First, the ITR echo characteristics of the pulse signal are discussed based on the micro-motion echo modeling of ballistic target. Then, the real range profile of target can be obtained by using the output characteristics of the unmatched filter, and the whole process of micro-motion feature extraction for rotating target is proposed. The simulation verification results show that in multi-target scenarios, the proposed method can restore the true range profile of the target, and the micro Doppler distribution obtained by intermittent echo transmission and reception is consistent with the theoretical results. The use of pulse signals for target characteristic measurement and analysis of dynamic scattering characteristics in darkrooms has certain practical application value.

Key words: interrupted transmitting and receiving (ITR), segmented pulse compression, micro-motion, range profile

CLC Number:

TN 959.1

Zhenyu QIAO, Xiaobin LIU, Zhaoyu GU, Xiaoyi PAN, Shunping XIAO, Ling WANG. Measurement method of target characteristics based on matched filter joint design in anechoic chamber[J]. Systems Engineering and Electronics, 2026, 48(1): 67-75.

Figures/Tables 12

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References 30

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主要参数	量值
LFM脉宽${T_p}$/μs	10
LFM带宽$B$/MHz	500
ITR参数1脉宽$\tau $/μs	0.05
ITR参数1周期${T_s}$/μs	0.2
ITR参数2脉宽$\tau $/μs	0.1
ITR参数2周期${T_s}$/μs	0.2
目标位置/m	15
目标各散射中心相对距离/m	−8.2, −4.7, 0, 4.1, 8.7

主要参数	量值
雷达载频$ {f_c} $/GHz	10
PRF/kHz	1
初始欧拉角${\text{(}}\theta ,\phi ,\varphi )$	（10, 10, 20）
运动时长$ T $/s	1.024
目标距离R₁/m	15
目标距离R₂/m	31
角速度ω₁/Hz	4
角速度ω₂/Hz	2

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Measurement method of target characteristics based on matched filter joint design in anechoic chamber

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