double-star signal 中文意思是什麼
double-star signal
解釋
兩色信號彈-
The new positioning system which employs three geostationary satellites emitting radio signals to users just like the gps satellites do, and allows the users receiver to solve position based on the received radio signal as well as the reading of electronic map, the drawbacks of double - star navigation system are overcome
三顆同步導航衛星像gps衛星那樣向用戶播發導航電文,用戶接收機根據這些導航電文信息以及電子地圖高程數據,像gps接收機那樣解算用戶位置,從而克服了雙星定位的兩大缺陷。
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