机载PD雷达模拟器目标检测仿真研究

在针对机载航电设备系统的飞行训练模拟器中，雷达模拟器与惯导、气象与地理、电子对抗模拟器构成一个分布式交互仿真系统。目标的检测模拟是雷达模拟器设计中的一个重要问题。该文讨论在一定的气象条件、地理环境等情况下，模拟机载PD雷达设备完成目标自动检测的方法。根据PD雷达回波频谱特点，将其划分为主杂波、旁瓣杂波区和热噪声区三个区间，分别计算目标的信噪(杂)比，采用加权形式的随机数与检测概率进行比较的方法进行判断。进行了仿真实验，结果表明该方法判断过程明确，具有实用性。

Study on Simulation of Target Detection of Airborne PD Radar

In the flight simulator oriented to the training of airborne avionics,radar simulator, weather simulator, target simulator and electronic countermeasure simulator construct a distributed interactive simulation system. Target detection is an important issue in the design of radar simulator. In this paper the method for target detection based on analysis and simulation of the airborne PD Radar under the conditions of special weather, terrain, system parameters and target parameters is addressed. Based on the analysis of characteristic of echoes frequency, two frequency parts are divided, then the SN(C)R_s are calculated respectively. Using the weighed random figure the detection judgment is made. The simulation results show that the processing method is reasonable and feasible.