TACAN beacon transmits pulse amplitude modulation signals in all direction, including bearing and distance information relative to the beacon.
塔康信标台全向发射脉冲幅度调制信号，隐含空中目标相对于信标台的方位和距离信息。
2
The model of radar target is composed of distance, bearing, speed, heading and amplitude of echo, fluctuation.
目标模型包括船舶的距离、方位、速度和回波幅度、幅度起伏。
3
The previous view was that when the sandstone contains oil, the velocity will reduce, and the well oil-bearing reservoir should show weak amplitude feature in the seismic section.