匀速运动目标长时间积累检测中的解距离模糊算法研究 -- 西北工业大学学报,2016,34(2):194-200
论文:2016,Vol:34,Issue(2):194-200
引用本文:
张杨梅, 冯西安. 匀速运动目标长时间积累检测中的解距离模糊算法研究[J]. 西北工业大学学报
Zhang Yangmei, Feng Xi'an. Resolving Range Ambiguity in Long Time Accumulation Detection of Target Moving with Uniform Velocity[J]. Northwestern polytechnical university

匀速运动目标长时间积累检测中的解距离模糊算法研究
张杨梅, 冯西安
西北工业大学 航海学院, 陕西 西安 710072
摘要:
针对匀速运动目标在多脉冲长时间积累检测体制下会出现的距离走动及距离模糊问题,考虑目标运动对解距离模糊的影响,将运动目标的速度参数引入同余方程组,建立了包含目标运动参数的多重脉冲重复周期回波模型,并提出了一种基于距离走动校正的解匀速运动目标距离模糊算法。该算法利用多重脉冲重复周期对运动目标进行参数估计,采用传统解模糊算法重构出带有误差的目标距离,利用脉冲重复周期之间的相互关系,校正由于目标运动而引起的目标距离估计误差,得到目标在每个脉冲重复周期中的真实距离。仿真实验表明,所提算法能够有效计算出目标距离并估计出目标运动速度,在目标模糊距离存在测量误差时也能够较为精确地估计出目标的运动参数。
关键词:    长时间积累    匀速运动    距离模糊    距离单元走动   
Resolving Range Ambiguity in Long Time Accumulation Detection of Target Moving with Uniform Velocity
Zhang Yangmei, Feng Xi'an
College of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
Long time accumulation method is a commonly used technique to detect weak target. But ambiguities may arise in both range and Doppler measurements. Furthermore, the presence of target motion causes the migration of echo envelope within multi-cycle integration time and severely affects the detection performance. For locating moving target, we establish a multi-pulse echo model based on multiple-burst sonar signal and present a range ambiguity resolving algorithm based on correcting range cell migrations. Through utilizing a set of pulse repetition intervals (PRIs) that are not pair-wisely co-prime, we design the algorithm to recover the correct position and speed of the target moving with uniform velocity. Traditional ambiguity resolving method is used to obtain a preliminary target range, which is incorrect in the case of moving target. The proposed method corrects the reconstruction errors by evaluating the relationships among PRIs. Numerical simulation results and their analysis show preliminarily that the proposed algorithm performs well in estimating target range and velocity despite unavoidable measurement errors.
Key words:    algorithms    calculations    computer simulation    design    Doppler effect    fuzzy systems    mathematical models    measurement errors    Monte Carlo methods    range finding    sonar    target tracking    time delay    velocity    CRT (Chinese Remainder Theorem)    long time accumulation    migration through range cell    PRT (Pulse Repetition Time)    range ambiguity    uniform motion   
收稿日期: 2015-09-02     修回日期:
DOI:
基金项目: 国家自然科学基金(61271414)与陕西省自然科学基金(2014JM2-6090)资助
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作者简介: 张杨梅(1982-),女,西北工业大学博士研究生,主要从事水声信号处理、水下目标探测的研究。
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参考文献:
[1] 戴文琪, 王家隆, 曾建瑜. 余数法解距离模糊的检错、纠错条件[J]. 电子学报, 1988, 16(6):93-98 Dai Wenqi, Wang Jialong, Zeng Jianyu. The Error Detecting and Error-Correcting Conditions of the Range Ambiguities Solved by Chinese Remainder Theorem[J]. Acta Electronica Sinica, 1988, 16(6):93-98(in Chinese)
[2] 戴文琪, 赵问道. 具有纠错能力的解距离模糊的模糊数法[J]. 电子学报, 1991, 19(2):127-129 Dai Wenqi, Zhao Wendao. The Methods Having Error Correcting Ability to Solve the Range Ambiguities[J]. Acta Electronica Sinica, 1991, 19(2):127-129(in Chinese)
[3] Li X, Liang H, Xia X G. A Robust Chinese Remainder Theorem with its Applications in Frequency Estimation from Undersampled Waveforms[J]. IEEE Trans on Signal Processing, 2009, 57(11):4314-4322
[4] Wang Wenjie, Xia Xianggen. A Closed-Form Robust Chinese Remainder Theorem and its Performance Analysis[J]. IEEE Trans on Signal Process, 2010, 58(11):5655-5666
[5] Xiao L, Xia X G, Wang W. Multi-Stage Robust Chinese Remainder Theorem[J]. IEEE Trans on Signal Processing, 2014, 62(18):4772-4785
[6] Wang W J, Li X P, Wang W, et al. Maximum Likelihood Estimation Based Robust Chinese Remainder Theorem for Real Numbers and Its Fast Algorithm[J]. IEEE Trans on Signal Process, 2015, 63(13):3317-3331
[7] Li Wenchao, Wang Xuezhi, Wang Xinmin, et al. Distance Estimation Using Wrapped Phase Measurements in Noise[J]. IEEE Trans on Signal Process, 2013, 61(7):1676-1688
[8] 梁红, 张琦, 杨长生. 广义稳健的中国剩余定理及其在欠采样率下频率估计中的应用[J]. 电子与信息学报, 2010, 32(8):1802-1805 Liang Hong, Zhang Qi, Yang Changsheng. A Generalized Robust Chinese Remainder Theorem and its Application to Frequency Estimation with Undersampling[J]. Journal of Electronics & Information Technology, 2010, 32(8):1802-1805(in Chinese)