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A-PPP: Array-Aided Precise Point Positioning With Global Navigation Satellite Systems

机译:A-PPP:全球导航卫星系统的阵列辅助精确点定位

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摘要

In this paper, the global navigation satellite system (GNSS) precise point positioning (PPP) concept is generalized to array-aided PPP (A-PPP). A-PPP is a measurement concept that uses GNSS data, from multiple antennas in an array of known geometry, to realize improved GNSS parameter estimation (position, attitude, time and atmospheric delays). The concept is formulated such that it applies to each current and future multifrequency GNSS, stand-alone or in combination. A–PPP is made possible through solving a novel orthonormality-constrained multivariate (mixed) integer least-squares problem. It is shown that the integer matrix constraint is necessary to obtain a precise instantaneous attitude- and position solution, whereas the inclusion of the orthonormality constraint in the integer ambiguity objective function is essential to achieve high instantaneous probabilities of correct integer estimation. Different A-PPP applications are discussed, with their performances illustrated by means of empirical GPS results.
机译:在本文中,全球导航卫星系统(GNSS)的精确点定位(PPP)概念被推广到阵列辅助PPP(A-PPP)。 A-PPP是一种测量概念,它使用来自已知几何阵列中的多个天线的GNSS数据来实现改进的GNSS参数估计(位置,姿态,时间和大气延迟)。制定了这一概念,使其适用于当前或未来的每个多频GNSS,无论是独立的还是组合的。通过解决一个新的正交受限的多元(混合)整数最小二乘问题,使得A–PPP成为可能。结果表明,整数矩阵约束对于获得精确的瞬时姿态和位置解是必需的,而正交歧义约束包含在整数歧义目标函数中对于获得正确的整数估计的高瞬时概率至关重要。讨论了不同的A-PPP应用,并通过经验GPS结果说明了它们的性能。

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