Modulation Characteristics Analysis of the LPI Radar Pulses under non-Cooperative Estimation

2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST) Pub Date : 2019-01-01 DOI:10.1109/IBCAST.2019.8666963

M. Jawad, Yasir Iqbal, Nouman Sarwar, F. Siddiqui

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引用次数: 3

Abstract

The Complex Low Probability of Intercept (LPI) radars use different pulse modulation schemes as an effective antijamming feature. A bandwidth based modulation recognition algorithm was proposed in literature, which relies on bandwidths comparison of the intercepted signal and its mth order. This paper develops an improved algorithm to find the optimized data segment length for high performance of bandwidth based modulation recognition algorithm. For real time estimations, only a segment of the long intercepted pulse is processed. The chosen length of the data segment highly depends on the specified range of pulse compression ratio and pulse width. The improved algorithm analyzes the impact of chirp rate on selection of the data segment length and attains high detection performance by proposing a limiting condition. It has been concluded through simulations that if the proposed limiting condition on chosen data segment length and signal’s bandwidth is satisfied, high probability of modulation recognition is achieved.

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非合作估计下LPI雷达脉冲调制特性分析

复杂低截获概率(LPI)雷达采用不同的脉冲调制方案作为有效的抗干扰特性。文献中提出了一种基于带宽的调制识别算法，该算法依赖于截获信号及其m阶的带宽比较。为了提高基于带宽的调制识别算法的性能，本文提出了一种改进的算法来寻找最优的数据段长度。对于实时估计，只处理长截获脉冲的一部分。所选择的数据段长度在很大程度上取决于脉冲压缩比和脉冲宽度的指定范围。改进后的算法分析了啁啾率对数据段长度选择的影响，并提出了一个限制条件，获得了较高的检测性能。仿真结果表明，如果所选数据段长度和信号带宽满足所提出的限制条件，则可以实现高概率的调制识别。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)

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