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中文摘要：
为提高三维空间目标的测距精度,提出利用圆柱阵的近似时延测距算法。首先根据圆柱阵中部分阵元具有不同时延表达式的特点,推导出空间目标的测距公式;然后在测向结果的基础上,仿真分析该算法的测距性能;最后利用外场实验对算法的性能进行验证。仿真及实验结果表明：利用圆柱阵的近似时延测距算法对距离估计的相对误差随信噪比增大快速下降,在较高信噪比条件下,相对误差为6.4%.
英文摘要：
To improve the ranging accuracy for air target,an approximately time delay method using cylinder array is presented.According to different time delay expressions for different elements in cylinder array,the formula of range estimation is derived.Based on bearing estimation results,the algorithm＇s performance is analyzed.An experiment is carried out to validate the algorithm＇s performance.The experiment and simulation results show that the relative error of range estimation drops with the increase of SNR rapidly.The error is about 6.4% under higher SNR.
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