摘要
传统的微波暗室远场雷达散射截面积(RCS)测量方法采用点频测试。对低RCS目标,点频RCS测量系统精度差,信息量少。为克服这些缺点,文中运用宽带扫频测量RCS的原理和方法,构建基于该方法的自动测量系统,以得到较高的精度。该系统利用矢量网络分析仪所具有的时域功能,把目标的频率响应变换到时域中进行分析,再通过软件上的背景回波消除技术,进一步降低背景回波的干扰,最后得到目标的RCS。实验证明,该方法系统测量精度高、结果准确,值得深入研究和推广。
Traditionat method of indoor RCS t is the singte frequency （CW） method. For low baekscattering target measurement, single frequency RCS measurement system is low in precision and has little information quantity. Aiming at conquering the disadvantages, the principle and method of broadband swept frequency RCS measurement are introduced in the paper, and an automatic measurement system based on this method is proposed to get a higher precision. By using the time domain function of vector network analyzer, this system analyzes the time domain response transformed from the frequency respons. Then by using the background echo elimination software techniques, more interference from background echo is reduced. Finally the RCS of target is got. It is validated by the experiment that the system has high precision and is worthy of studying and using abroad.
出处
《电子测量技术》
2007年第7期128-131,共4页
Electronic Measurement Technology
