军用直升机雷达隐身性能仿真与评估

采用高频方法计算了某型通用直升机及其隐身改型的RCS数据，基于现有雷达隐身性能计算方法和直升机低空飞行特点，对直升机在单部雷达和雷达组网两种情况下的雷达隐身性能进行仿真分析，给出了单部雷达和雷达组网发现目标的判定准则，分析了直升机可探测范围曲线、平均综合检测概率和暴露时间等隐身指标。通过仿真分析，评估了不同飞行高度下RCS减缩与直升机隐身性能的定量关系，为直升机的隐身设计提供了参考依据。

Radar Stealth Performance Simulation and Assessment of Military Helicopter

With high frequency method calculating RCS data of a type of utility helicopter and its stealth improving type, referring to existing calculating methods of radar stealth performance and considering to low altitude flight characteristic of helicopter, its radar stealth performance was re- spectively simulated and analyzed in the circumstances of single radar and radar network. Judging criteria of discovering target were given out, and some stealth indexes were analyzed, such as detec- tion range, mean synthesis detective probability and exposure time and so on. Through simulation and analysis, the quantitative relation between RCS reduction and stealth performance of helicopter was assessed at different flight altitude, which supplied the reference and basis to the stealth design.