GPS数据估计 [英] GPS data estimation

问题描述

在附图中可以看到，我在中间有一个GPS。显然，GPS给了我Lon。和板的中心的纬度没有问题。
我的问题是我如何估计Lon是什么。并且在每个端点（A，B，C，D）处的Lat作为端点与GPS之间的距离是已知的？我相信应该有一个公式来达到这个目的。

我很欣赏任何想法和建议。

GPS和四点：

！[] [1]

[1]： ......特别是以目的地点为起点距离和方位的部分

I have a GPS on the middle of a plate as can be seen in attached picture. Clearly, the GPS gives me the Lon. and Lat of the center of the plate with no problem. My question is how can I estimate what is the Lon. and Lat at each end point (A,B,C,D) as the distance between end points and GPS is known? I believe there should be a formula for this purpose.
I appreciate any idea and suggestion in advance.

GPS and four points around it:

![][1]

[1]: ... specifically the section headed Destination point given distance and bearing from start point

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