一次雷达可以分成机场监视雷达、航路监视雷达、机场地面探测设备三类。
军用一次雷达 FPS Military Primary Radar
雷神一次雷达 Raytheon PSR
c-波段测风一次雷达 c-band wind-finding primary radar
一次监视雷达 primary surveillance radar
本文论述的寄生气象检测系统是一次雷达中的气象检测通道。
The radar serves for plane starting and arriving, and provides alarm of dangerous weather.
下雾时要叫我，鸣放汽笛，动用测深仪，启动一次雷达不要超过20分钟。
Call me when the fog set in. Sound regulation whistle, attend to echo sounding and start radar at an interval not more than 20 minutes.
相比于一次雷达，采用单脉冲技术的二次雷达可以更加准确的测量空中目标的距离和方位。
Compared with the Primary Radar, the Secondary Surveillance Radar using the Monopulse Technology can measure the range and the azimuth of the targets more accurately.
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