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Lower Bounds on DOP

机译:DOP的下界

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摘要

Code phase Global Navigation Satellite System (GNSS) positioning performance is often described by the Geometric or Position Dilution of Precision (GDOP or PDOP), functions of the number of satellites employed in the solution and their geometry. This paper develops lower bounds to both metrics solely as functions of the number of satellites, effectively removing the added complexity caused by their locations in the sky, to allow users to assess how well their receivers are performing with respect to the best possible performance. Such bounds will be useful as receivers sub-select from the plethora of satellites available with multiple GNSS constellations. The bounds are initially developed for one constellation assuming that the satellites are at or above the horizon. Satellite constellations that essentially achieve the bounds are discussed, again with value toward the problem of satellite selection. The bounds are then extended to a non-zero mask angle and to multiple constellations.
机译:代码阶段全球导航卫星系统(GNSS)的定位性能通常由精度的几何或位置稀释(GDOP或PDOP),解决方案中采用的卫星数量的函数及其几何形状来描述。本文仅将这两个指标的下限作为卫星数量的函数,从而有效地消除了由于其在天空中的位置而导致的增加的复杂性,从而允许用户评估其接收机在最佳性能方面的表现如何。当接收器从具有多个GNSS星座的大量卫星中进行子选择时,这样的界限将非常有用。假设卫星位于地平线或地平线以上,则最初针对一个星座制定边界。讨论了基本达到界限的卫星星座,再次对卫星选择问题具有价值。然后将边界扩展到一个非零的蒙版角度和多个星座图。

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