CAJ | 학술논문

对双基调频连续波(FMCW)宽带雷达旋转目标的微多普勒效应进行了研究。首先建立了双基FMCW宽带雷达中的旋转目标模型，推导得出了旋转目标的微多普勒效应表达式，并通过分析目标脉内微动对一维距离像的影响，得出了一次误差项会引起一维距离像的走动和峰值偏移、二次误差项会引起一维距离像的展宽、同时双基角也会对目标微多普勒特征曲线的最大频偏产生调制等结论。在此基础上，进一步提出了利用最小熵准则对误差因子进行补偿的方法。仿真分析表明：该方法能够较精确地估计二次误差项的系数，有效地补偿目标微多普勒效应的误差因子，并具有良好的抗噪性能。
대쌍기조빈련속파(FMCW)관대뢰체선전목표적미다보륵효응진행료연구。수선건립료쌍기FMCW관대뢰체중적선전목표모형，추도득출료선전목표적미다보륵효응표체식，병통과분석목표맥내미동대일유거리상적영향，득출료일차오차항회인기일유거리상적주동화봉치편이、이차오차항회인기일유거리상적전관、동시쌍기각야회대목표미다보륵특정곡선적최대빈편산생조제등결론。재차기출상，진일보제출료이용최소적준칙대오차인자진행보상적방법。방진분석표명：해방법능구교정학지고계이차오차항적계수，유효지보상목표미다보륵효응적오차인자，병구유량호적항조성능。
The micro-Doppler effect of rotating target is studied in bistatic frequency modulation continuous wave (FMCW)wideband radar in this paper.Firstly,the model of rotating target is established in bistatic FMCW wideband radar,and the expression of micro-Doppler effect is derived.Then,the conclusion is de-duced from the previous that the primary error term causes one-dimensional range profile walk and peak deviation,and the quadratic error term causes the one-dimensional range profile widening,also the maxi-mum of frequency deviation in micro-Doppler feature curve is modulated by the bistatic angle according to the analysis of the influence caused by micro-motion during the pulse repetition interval (PRI)on one-di-mensional range profile .Finally,the error factor compensation approach based on minimum entropy prin-ciple is proposed.The simulation analysis indicates that the use of the method can estimate the coefficient of the quadratic error term in precision and can compensate the error factor of the micro-Doppler effect ef-fectively and is good in anti-noise performance.