午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

The components, functions and application of the GPS direction finder in mobile radar are introduced. The faults in which the azimuth does not display or display incorrectly while the GPS direction finder being in use are described, and the causes is analyzed, through extracting and analyzing the data of the GPS direction finder and studying a variety of factors affecting the GPS satellite signal receiving. Some suggestions about the use of the GPS direction finder are presented.