本文讨论了动态测量对带通滤波器的基本要求,分析了有源 RC 带通滤波器的选频特性和调谐条件,指出了摆脱困境最有效的办法是采用窄带自动跟踪滤波。文中讨论了四种窄带自动跟踪滤波技术:相关滤波、变频跟踪滤波、压控跟踪滤波和 N 分路滤波。最后指出混合式自动跟踪滤波和微计算机化的数字窄带跟踪滤波是国内当前值得大力研究和开发的两个重要方面。 This paper discusses the basic requirements of dynamic measurement of band-pass filter, analyzes the frequency-selective characteristics and tuning conditions of the active RC band-pass filter, and points out that the most effective way to get out of the predicament is to use narrow band automatic tracking filter. Four types of narrow-band automatic tracking filtering techniques are discussed in this paper: correlation filtering, frequency tracking filtering, voltage-controlled tracking filtering and N-shunt filtering. Finally, it is pointed out that hybrid automatic tracking filter and micro-computerized digital narrow-band tracking filter are two important aspects which are worth studying and developing in China.