【摘要】 在某相位编码毫米波雷达系统中 ,要求很高的目标速度测量精度 ,因而目标多普勒频率测量电路的设计比较重要。多周期同步测量方法作为在直接测频基础上发展起来的新方法 ,在测频系统中得到越来越广泛的应用。文中介绍了利用复杂可编程逻辑器件 (CPLD)以及多周期同步测频方法实现目标多普勒频率的测量。实际使用表明 ,该设计具有系统集成度高、精度高、可靠等优点更多还原

【Abstract】 The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed. As a new method, synchronous multi cycle frequency measurement is more and more widely used. In this paper, it is introduced in detail that with the use of this method and MAX7000 series CPLD, the high precision measurement of target doppler frequency can be obtained. It is shown that the designed system is accurate, highly integrated and reliable.更多还原