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首页> 外文期刊>Radar, Sonar & Navigation, IET >Low probability of intercept-based OFDM radar waveform design for target time delay estimation in a cooperative radar-communications system
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Low probability of intercept-based OFDM radar waveform design for target time delay estimation in a cooperative radar-communications system

机译：雷达通信系统中用于目标时延估计的基于拦截的低概率OFDM雷达波形设计

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摘要

In this study, a low probability of intercept (LPI)-based orthogonal frequency division multiplexing radar waveform design strategy is developed for target time delay estimation in a cooperative radar-communications system, where the communications base station (CBS) is able to receive and process the radar emissions. The basis of the LPI-based radar waveform design strategy is to utilise the optimisation technique to design the transmitted waveform of a radar system for specified target time delay estimation accuracy in order to achieve enhanced LPI performance. The expression for Cramer-Rao lower bound is analytically derived and utilised as a performance metric for target time delay estimation performance. The resulting optimisation problem is solved by the approach of linear programming. Several numerical results are provided to verify the superiority of the proposed radar waveform design algorithm in terms of the LPI performance of the radar system. It is also shown that the radar transmitted power can be significantly reduced with the help from the CBS which plays a role of the bistatic radar receiver.
机译：在这项研究中，开发了一种基于低截获率（LPI）的正交频分复用雷达波形设计策略，用于在协作式雷达通信系统中目标时延估计，其中通信基站（CBS）能够接收并处理雷达辐射。基于LPI的雷达波形设计策略的基础是，利用优化技术为指定的目标时延估计精度设计雷达系统的发射波形，以实现增强的LPI性能。通过分析得出Cramer-Rao下界的表达式，并将其用作目标时延估计性能的性能指标。由此产生的优化问题通过线性规划的方法得以解决。提供了几个数值结果，以验证所提出的雷达波形设计算法在雷达系统LPI性能方面的优越性。还表明，借助CBS的帮助，可以大大降低雷达的发射功率，而CBS则起到了双基地雷达接收机的作用。

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