【摘要】 本文针对水下GPS系统的双曲面定位模型,提出了双曲面定位系统的稳定性概念,通过分析双曲面定位的有解条件,指出观测误差与有解条件的矛盾是双曲面稳定性问题产生的根源;给出了两种求解双曲面定位模型的非稳定性区域的方法;通过对双曲面PDOP值计算方法的分析,证明了全局对称点是系统的最不稳定点。更多还原

【Abstract】 Based on hyperbola intersecting model of underwater GPS positioning system,a stability conception of hyperbola positioning was given in details in the paper.Hyperbola model was characterized the solution-existing conditions,which was proved to be the only reason that causes hyperbola positioning system unstable.In this paper,two methods to calculate the unstable area distribution were developed.Finally,a conclusion that the most unstable point in the buoy network is the global symmetric point was deduced by analyzing the hyperbola PDOP method.更多还原