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针对机载雷达辐射策略的射频隐身性能评估问题进行了研究。由于机载雷达面临着敌方有源和无源探测系统的威胁,开展对其辐射策略的射频隐身优劣评估显得非常迫切。鉴于实物仿真存在训练经费高、作战环境不可控以及无法进行多次重复等问题,本文提出了一种射频隐身半实物仿真系统的构建方法,并着重对最大信号不确定性策略的射频隐身性能进行了评估分析。仿真主要以简单的单载频和线性调频信号为主,从载频捷变和驻留周期捷变对辐射策略的射频隐身性能进行了验证。结果表明:多类参数的捷变比单一类参数的捷变射频隐身性能更好,并且增大信号带宽是一种很好的提升战机射频隐身性能的方法。
The research on the radio frequency stealth performance evaluation of airborne radar radiation strategy is studied. As airborne radars are threatened by enemy active and passive detection systems, it is urgent to evaluate the radios stealth advantages and disadvantages of their radiation strategies. In view of the fact that the physical simulation has the problems of high training cost, uncontrollable combat environment and multiple repetitions, this paper proposes a method to construct a radio-frequency stealth and semi-physical simulation system and focuses on the performance of the maximum signal uncertainty Evaluation analysis. The simulation mainly focuses on simple single-carrier frequency and chirp signals, and verifies the radiofrequency stealth performance of the radiating strategy from the carrier frequency agility and the resident-period agility. The results show that the agility of multiple parameters is better than the agile RF of a single class of parameters, and increasing the signal bandwidth is a good way to enhance the performance of the fighter’s RF stealth.