中国第一重型机械集团公司-新闻中心 关键词：机械压力机；主传动；相位精度 [gap=407]Key words: Mechanical press；Main drive；Phase accuracy
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实现信道中心频率的相位精度就可以保证干涉相位的精度，而通道内的残余相位差只会引起干涉相关度的降低。
The phase balance of the central frequency can ensure the accuracy of the correlation phase, and the residual phase error will only reduce the coherency.
针对某设备所需的三相电源相位精度要求高的特点，在传统DDS技术的基础之上，设计了一款高度对称的三相电源。
In order to solve the requirement of high precision equal phase in three-phase AC power supply, one AC power supply is designed based the traditional DDS technology.
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。
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.
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