摘要
采用智能式高精度实时脉内测频技术，在高时标全数字计数式测频的基础上，由单片微机软件实时对脉内测量值进行数字滤波，以进一步提高精度。同时，根据测频的量值，由软件控制ＤＤＳ完成对射频脉冲的搜索、跟踪。这种方法采用频率搜索和跟踪相结合，软件和硬件相结合，以适应发射频率的快速变化。它搜索跟踪速度快、范围大、精度高、稳定可靠，同时有效地降低了系统实现的复杂性。
With intelligent timely high-accuracy frequency measurement in pulse and based on higher fre- quency of timing pulse and full digital count, the accuracy of frequency measurement can be further improved after the measured value in pulse is timely filtered by software of MCU. Meanwhile, according to the measured value, RF can be searched and tracked by DDS controlled by software. This kind of method, combining search with track, combining hardware with software, can adapt the quick change of transmission frequency. For this kind of method, the speed of search and track is quick, the range is wide, the accuracy, stability and reliability are high. The system implementation is also efficiently simplified.
出处
《空军雷达学院学报》
2001年第3期33-35,共3页
Journal of Air Force Radar Academy
