According to the system bandwidth, the low pass filter was added in controller to assure the tracking effect of system and filter the super-highfrequency in control singles.
根据系统的带宽，在控制器中加入低通滤波器，以保证系统跟踪效果，过滤控制信号中频率过高部分。
2
Highfrequency radar is also a highfrequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of National 211 for building subject.
软件高频雷达也是一部在岸边使用的高频地波超视距雷达，是国家211学科建设项目之一。
3
The new technology of thawing were detail introduced, for example, the super heated steam thawing, ohmic heating thawing, highfrequency and microwave thawing.