Combined effect of phase and RGPO delay quantization on jamming signal spectrum
Combined effect of phase and RGPO delay quantization on jamming signal spectrum
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DOI：
10.1109/radar.2005.1435790
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发表时间：
2005-05
期刊：
影响因子：
--
通讯作者：
M. Greco;F. Gini;A. Farina
中科院分区：
文献类型：
--
作者：
M. Greco;F. Gini;A. Farina
本文研究了采用射频数字存储器（DRFM）器件进行相位量化，并引入增加时延后ECCM系统发出的干扰信号的分析。本文的分析首先给出了量化电平等间隔时相位量化干扰信号频谱计算问题的精确解。信号的频谱呈现一个主项，它只是ECCM系统接收到的信号的衰减版本，以及假项，其幅度和位置取决于量化比特的数量。然后，对距离门拉离器件引入的延时量化效果进行了分析评价，并结合相位量化进行了分析。结果表明，相对于相位量化引起的杂散项，这种二次失真一般可以忽略不计。
This paper deals with the analysis of jamming signals emitted by ECCM systems after phase quantization, performed by radio frequency digital memory (DRFM) devices, and after introduction of increasing time delay. The analysis presented here shows first the exact solution to the problem of calculating the spectrum of a phase-quantized jamming signal when the quantization levels are equally spaced. The spectrum of the signal presents a primary term, which is simply an attenuated version of the signal received by the ECCM system, and false terms whose amplitude and location depend on the number of quantization bits. Afterward, the effect of time delay quantization introduced by range gate pull-off devices is analytically evaluated, combined to the phase quantization. Results show that this second distortion can be generally neglected with respect to the spurious terms due to the phase quantization.