失真LFM信号的补偿

Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI:10.1109/NAECON.1993.290893

Rongqing Xu, Zhidao Cao, Xinggang Liu

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引用次数: 2

摘要

针对系统的非理想性能和LFM信号的调制非线性，提出了一种利用STRETCH处理(或全脱模)进行补偿的方法。分析表明，系统的非理想性能对信号输出的影响是时不变的，而线性调频信号的非线性对输出的影响是时变的。一系列的仿真结果证明了该方法的有效性。在某些条件下，高达-5.76 dB的旁瓣电平可以降低到-41 dB。如果可容忍的旁瓣电平为- 30db，则目标尺寸可以扩展到120m。

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Compensation for distorted LFM signal

A compensation method for non-ideal performance of the system using STRETCH processing (or full-deramp), and for modulation nonlinearity of LFM signal is presented. An analysis is developed to show that the effect caused by the non-ideal performance of the system on the signal output is time-invariant, and the effect caused by the nonlinearity of LFM signal on the output is time-variant. A series of simulation results demonstrate the efficiency of the method. Under some conditions, the sidelobe level as high as -5.76 dB may be reduced to -41 dB. If the tolerable sidelobe level is -30 dB, the target size may be extended to 120 m.<>

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Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993

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