雷达高度表灵敏度测试系统的参数化设计方法

Parameterized Design Method for Testing System of Radar Altimeter Receiver Sensitivity

提出了一种参数化设计方法,实现了雷达高度表接收机灵敏度的自动化测试,提高了接收机灵敏度的测试效率和测试准确度;利用计算机程序通过GPIB协议控制直流稳压电源、信号源、示波器等标准仪器,实现了雷达高度表的加电和断电、雷达回波信号的模拟、雷达高度表输出端信号的检测;针对测试需求,充分考虑接收机灵敏度测试方案的通用性和可扩展性,设计了通用的测试模型,据此开发的软件可自动给出测试结论;在程序中设计了求取灵敏度最优频点和灵敏度的优化迭代算法,节省了测试时间;利用数据库技术对被测雷达高度表相关信息和测试数据进行管理,便于将测试结果与历史数据进行比对。

A parametric design method is put forward,which made it possible to automatically measure receiver sensitivity of radar altimeter.It improved the receiver sensitivity test efficiency and test accuracy.Using a computer program through GPIB protocol control standard instrument such as DC regulated power supply,signal generator,oscilloscope,to turn on or off radar altimeter,to simulate radar echo signal,to detect radar altimeter output signal.According to test requirements,fully considering the receiver sensitivity test scheme for universal and scalability,a general test model is designed.The software is developed which can automatically giving the test results.A program designed to calculate the sensitivity of the optimal frequency and sensitivity of the optimal iterative arithmetic,which save the test time.Test data and information of the measured radar altimeter are managed by database technology,which make it easy to compare the result of the test with the historical data.