radio angle

In this paper, the mountain-based radio occultation is simulated using the 3D ray tracing technique. The starting time, the azimuth angle and the duration of the occultation events are obtained.

利用3维射线追踪技术模拟山基（或机载）无线电掩星，研究掩星事件出现的时间、方位角和掩星事件持续时间；

Compared with the distributed radio resource scheduling algorithm, a tri-angle cellular architecture with distributed antennas was proposed, the related centralized layer could descend interference down to 13.4? dB.

与分布式的调度方案相比，基于这种小区架构的集中式无线资源调度方案，可以使干扰降低13.4dB。

Doppler Radio Direction Finder is a technology that measures the angle between radio transmitter and the radio using Doppler effect ( Doppler principle).

多普勒无线电测向技术即为利用多普勒效应测定无线电发射设备与接收设备之间夹角的一种技术。

The Doppler Radio Direction Finder technology has smaller error, higher sensitivity than other direction finder technology. And it can measure the elevation angle.

比起其他无线电测向技术，用多普勒效应进行测向误差较小，灵敏度较高，可仰角测量，并且成本较低。

Clinical study on projecting angle and dosage of dental radio vision graphy system

口腔数字成像系统投照剂量及角度的临床研究