The first section of this paper discusses the theory of the Doppler Radio Direction Finder(DF) technology. 本文首先分析了多普勒无线电测向技术的基本原理。
I am calibrating radio direction finder or adjusting compasses. 我正在校准无线电测向仪(DF)或校正指南针。
A direction finder that gives a bearing by determining the direction of incoming radio signals. 通过观察输入无线电信号来源的方向来判定方位的测向器。
Indicating and recording instruments and annunciating devices. manual direction finder bearing indicator 指示记录仪和信号装置。手动测向仪(DF)方位指示器
Eye characteristic detection and gaze direction calculation in gaze tracking system a direction finder that gives a bearing by determining the direction of incoming radio signals. 视线追踪系统眼部特征检测及视线方向计算方法研究通过观察输入无线电信号来源的方向来判定方位的测向器。