Dilution of precision (DOP), or geometric dilution of precision (GDOP), is a term used in satellite navigation and geomatics engineering to specify the error propagation as a mathematical effect of navigation satellite geometry on positional measurement precision.

GDOP (geometric dilution of precision) or PDOP (position dilution of precision) describes the error caused by the relative position of the GPS satellites. Basically, the more signals a GPS receiver can “see” (spread apart versus close together), the more precise it can be.

2023年12月6日 · 几何精度因子（Geometric Dilution Precision ，缩写为GDOP）是衡量定位精度的很重要的一个系数，它代表GPS 测距误差造成的接收机与空间卫星间的距离矢量放大因子。实际表征参与定位解的从接收机至空间卫星的单位矢量所勾勒的形体体积与GDOP成反比，故又称为几何精度因子。GDOP的数值越大，所代表的单位矢量形体体积越小，即接收机至空间卫星的角 …

Discover the importance of Geometric Dilution of Precision (GDOP) in GPS technology. This article delves into how GDOP impacts positioning accuracy, the factors that contribute to its variation, and practical tips for minimizing its effects to …

2018年7月18日 · GPS Chip manufacturers and those who integrate them into a sports watch can improve our accuracy. But we can help ourselves too. Constellation level – GPS can be augmented with additional satellites from GLONASS and GALILEO. Simply there are more AVAILABLE satellites to choose from.

Good GDOP, a small value representing a large unit-vector-volume, results when angles from receiver to satellites are different. Wheras poor GDOP, a large value representing a small unit vector-volume, results when angles from receiver to the set of SVs used are similar.

2024年8月17日 · Calculation Example: GDOP (Geometric Dilution of Precision) is a measure of the accuracy of a GNSS (Global Navigation Satellite System) position fix. It is calculated based on the geometry of the satellites used in the calculation and the baseline vector between the receiver and the satellites.

GDOP (Geometric Dilution of Precision) Measures the dilution of precision for the entire navigation solution. GDOP combines the dilution of precision of the position and clock-related components of the navigation solution.

GDOP 全称为 Geometric Dilution of Precision，几何精度因子。 它是衡量定位精度的一个很重要的系数，它代表卫星测距误差造成的接收机与空间卫星间的距离矢量放大因子，是理论选星算法的一个重要参数。

2018年5月19日 · In positioning, navigation and timing applications of multi-GNSS (global navigation satellite system) constellations, the geometric dilution of precision (GDOP) offers an important index for selecting satellites and evaluating positioning accuracy.