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          您現在的位置:首頁 ? 技術裝備 ? GPS跟蹤 ? GPS跟蹤

          GPS的工作原理:是利用我們熟知的幾何與物理上一些基本原理。首先我們假定衛星的位置為已知,而我們又能準確測定我們所在地點A至衛星之間的距離,那么A點一定是位于以衛星為中心、所測得距離為半徑的圓球上。進一步,我們又測得點A至另一衛星的距離,則A點一定處在前后兩個圓球相交的圓環上。我們還可測得與第三個衛星的距離,就可以確定A點只能是在三個圓球相交的兩個點上。根據一些地理知識,可以很容易排除其中一個不合理的位置。當然也可以再測量A點至另一個衛星的距離,也能精確進行定位。

           

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