基于IFA-HFS的雷达波形域LPI性能评估方法

针对雷达波形域低截获（LPI）性能评估的问题,提出一种应用改进萤火虫算法（IFA）求解指标权重的犹豫模糊集（HFS）评估方法。首先,介绍基于逼近理想解排序（TOPSIS）的犹豫模糊集理论,并从属性和方案2个角度构建指标权重的优化模型;其次,通过引入混沌理论,解决了萤火虫算法容易陷入局部最优的问题,给出用IFA求解指标权重的流程;再次,从雷达发射方角度,提取脉内、脉间5个波形域LPI性能评估指标;最后,得到利用IFA求解指标权重的犹豫模糊集评估方法。选取4种不同类型的雷达进行仿真对比,获得波形域LPI性能排序,验证了方法的快速性和有效性。 

Radar LPI performance evaluation method for waveform domain based on IFA-HFS

In order to solve the problem of Low Probability of Interception (LPI) performance evaluation of radar waveform domain, a Hesitant Fuzzy Set (HFS) evaluation method based on Improved Firefly Algorithm (IFA) is proposed to obtain index weight. Firstly, we introduce the HFS theory based on Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS), and construct an optimization model of index weights from the perspectives of attribute and scheme. Secondly, we solve the problem that firefly algorithm is easy to fall into local optimum by introducing chaos theory, and give the process to get index weights by using IFA. Then, we extract five LPI performance evaluation indicators between inter-pulse and intra-pulse information from the radar transmitter. Finally, the HFS evaluation method based on IFA is obtained to get optimal index weights. Four different types of radar are selected to simulate and compare the waveform domain LPI performance, and the ranking results are obtained, which verify the rapidity and effectiveness of the proposed algorithm.