数字调谐搜索接收机用来覆盖宽范围的侦察频率及监视多种通讯模式搜索接收机能有效地工作,在于其性能须超过它试图进行监视的发射机性能。近年来在通讯技术方面的进展使目前已使用的(电子支援措施)系统处于困难的境地。频率捷变技术复杂的调制波形以及频谱阻塞技术对接收机性能提出了更高的要求。当然提高接收机性能还需考虑到如何缩小其尺寸和功率,提高其可靠性以及降低其成本等问题。今天的接收机设计师要受到很多条件的限制,其中许多可以随着新技术的应用迎刃而解。 Digitally tuned search receivers are used to cover a wide range of reconnaissance frequencies and monitor multiple communication modes. The search receiver works effectively because its performance must exceed the performance of the transmitter it is trying to monitor. Recent advances in communications technology have made the currently used (electronic support measures) system in a difficult situation. Frequency agile techniques Complex modulation waveforms and spectral blocking techniques place higher demands on receiver performance. Of course, improving the receiver performance also needs to consider how to reduce its size and power, improve its reliability and reduce its costs and other issues. Today’s receiver designers are subject to many conditions, many of which can be solved with the application of new technologies.