机载雷达目标距离像的优化算法

Proceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON) Pub Date : 2009-07-21 DOI:10.1109/NAECON.2009.5426645

X. Hu, Jiahao Deng

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引用次数: 0

摘要

由于采样间隔时间小于发射脉冲宽度，距离轮廓是冗余的和无序的。目标距离像的准确估计和优化是实现机载微波传感器探测系统的关键。针对机载阶跃频率脉冲传感器系统，提出了一种实时估计和优化过采样目标距离像的算法。该算法在过采样条件下，采用快速傅里叶变换和优化方法，利用高速DSP估计和优化天线波束停留时间内的目标距离轮廓。通过对传感器数据的仿真，对目标距离像谱进行了测量和分析。仿真结果表明，该算法可以减小过采样对目标距离像的影响，获得高分辨率的目标距离像。

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The optimization algorithm of target range profiling for airborne radar

The range profile is redundant and disordered because the sample interval time is less than transmitted pulse width. The accurate estimation and optimization of the target range profile are essential for realizing the airborne microwave sensor detection system. In this paper, an algorithm for the real-time estimation and optimization of the target range profile due to over-sampling is presented for the airborne stepped frequency pulse sensor system. Under the condition of oversampling this new algorithm employs the FFT and optimization method to estimate and optimize the target range profile within antenna beam dwell time by using high speed DSP. Through the simulation of sensor data, the target range profile spectrum is measured and analyzed. The result of simulation is that this new algorithm can reduce the effect of over-sampling on the range profile and obtain high resolution range profile of target.

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Proceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON)

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