一种高超声速飞行器雷达隐身性能评估方法技术

本发明专利技术涉及雷达隐身性能评估技术领域，具体涉及一种高超声速飞行器雷达隐身性能评估方法。本发明专利技术方法对于飞行器雷达散射截面面积为σRCS，通过雷达方程求解静止状态地面站雷达接收到飞行器回波信号的信噪比SNRRCS，计算静止状态的雷达探测概率Pd。假定运动状态地面雷达接收到飞行器回波信号的信噪比为SNRSCS，计算运动状态的雷达探测概率P′d及击落概率P′h，求解P′d·P′h＝Pd对应的信噪比为SNRSCS，进一步计算信噪比SNRSCS对应的隐身散射截面面积σSCS，通过隐身散射截面面积σSCS的大小来评估飞行器雷达隐身性能的优劣。该评估方法弥补了现有飞行器隐身性能未考虑速度对隐身性能的影响，将有助于总体专业进行飞行器性能评估与设计。

A Method for Evaluating Radar Stealth Performance of Hypersonic Vehicle

The invention relates to the technical field of radar stealth performance evaluation, in particular to a method for evaluating radar stealth performance of hypersonic aircraft. The method of the invention solves the signal-to-noise ratio (SNRRCS) of the aircraft echo signal received by the ground station radar in the static state by solving the radar equation, and calculates the radar detection probability Pd in the static state for the radar cross-section area of the aircraft being_RCS. Assuming that the signal-to-noise ratio (SNRSCS) of the ground radar receiving the aircraft echo signal in the moving state is SNRSCS, the detection probability P'd and the shooting probability P'h of the moving state are calculated, and the corresponding signal-to-noise ratio (SNRSCS) of P'd.P'h=P D is solved. The stealth scattering cross-section area_SCS corresponding to SNRSCS is further calculated. The stealth scattering cross-section area_SCS of the aircraft is evaluated by the size of the stealth scattering cross-section area The merits and demerits of performance. This evaluation method makes up for the fact that the stealth performance of the existing aircraft does not consider the influence of speed on the stealth performance. It will be helpful for the overall professional evaluation and design of aircraft performance.

【技术实现步骤摘要】
一种高超声速飞行器雷达隐身性能评估方法
本专利技术涉及雷达隐身性能评估
，具体涉及一种高超声速飞行器雷达隐身性能评估方法。
技术介绍
雷达隐身技术的根本目的是保护飞行器不被探测雷达发现从而被迫终止任务。传统的雷达隐身性能评估方法大多采用雷达散射截面周向平均值或某些特定方向的雷达散射截面值，然而随着高超声速飞行器的出现，高超声速飞行的物体被雷达探测到，却没有可采取的措施去终止其执行任务。因此，速度已成为一项新的不可忽略的隐身技术，而现有隐身性能评估仅以雷达散射截面为依据，已不能适应高速飞行器的雷达隐身性能的评估。因此，亟待开展针对高速飞行器的雷达隐身性能评估方法研究。
技术实现思路
针对上述技术问题，本专利技术提供了一种雷达隐身性能评估方法，解决了现有飞行器雷达隐身评估未考虑速度对隐身性能的影响，且现有技术不适用于高超声速飞行器的问题，具体技术方案如下：一种高超声速飞行器雷达隐身性能评估方法，设飞行器的雷达散射截面积为σRCS，飞行器在静止状态下，地面站雷达探测到飞行器回波信号的信噪比为SNRRCS，具体包括以下步骤，步骤S100：给定误警率Pf，则飞行器在静止状态下被探测概率Pd：本文档来自技高网...

【技术保护点】
1.一种高超声速飞行器雷达隐身性能评估方法，设飞行器的雷达散射截面面积为σRCS，飞行器在静止状态下，地面站雷达探测到飞行器回波信号的信噪比为SNRRCS，其特征在于，所述飞行器雷达隐身性能评估方法包括以下步骤，步骤S100：给定误警率Pf，计算飞行器在静止状态下被探测概率Pd：

【技术特征摘要】
1.一种高超声速飞行器雷达隐身性能评估方法，设飞行器的雷达散射截面面积为σRCS，飞行器在静止状态下，地面站雷达探测到飞行器回波信号的信噪比为SNRRCS，其特征在于，所述飞行器雷达隐身性能评估方法包括以下步骤，步骤S100：给定误警率Pf，计算飞行器在静止状态下被探测概率Pd：其中I0()为第一类修正贝塞尔函数，u为积分变量；步骤S200：计算在飞行器运动状态下，地面站雷达接收到飞行器回波信号的信噪比SNRSCS，具体为：设飞行器在运动状态下被探测概率为P′d，则有设在给定的导弹毁伤范围下，飞行器被击落的概率为P′h；令P′d·′h＝d，求解...

【专利技术属性】
技术研发人员：洪文，柳军，刘珍，
申请(专利权)人：中国人民解放军国防科技大学，
类型：发明
国别省市：湖南,43