讨论了应用GPS测量重力点的大地高，从而获得地面点的扰动重力（或称纯重力异常）值这样新的重力边值条件，如何从理论与实际上确定重力场的问题。
This paper discusses the problem of gravity field determination by application of such a new gravity boundary condition as the disturbing gravity by use of GPS .
纯重力异常