With the introductory paragraph, we explain the fundamental concepts and basic notions of
this section. For you, the analyst, who has the difficult task to deal with measurements …

An accurate and stable global geodetic reference frame, such as the International Terrestrial
Reference Frame (ITRF), is fundamental for quantifying geophysical changes in the Earth …

Decorrelation or reduction theory deals with identifying appropriate lattice bases that aid in
accelerating integer search to find the optimal integer solution of the weighted integer least …

Global Navigation Satellite Systems (GNSS) is the cornerstone for positioning and timing
applications across land, sea and air. GNSS carrier phase observations can be used to …

GNSS 模糊度降相关通过整数变换优化条件方差的排列顺序, 提高搜索效率.
降相关和条件方差的关系及其评价是关键问题之一. 针对这一问题, 本文从理论上分析了排序后 …

This paper compares the performance of the combined and uncombined triple-frequency
PPP-AR models from the user perspective. Simulated GPS and Galileo data are generated …

首先理论分析了条件数, 正交缺陷度, S (A) 等降相关评价指标所表示的几何意义,
然后采用LAMBDA 算法, LLL 规约算法和Seysen 规约算法通过模拟和实际数据对模糊度的搜索 …

With the advancement of multi-frequency and multi-constellation GNSS signals and the
introduction of observable-specific bias (OSB) products, the uncombined precise point …

The fast and accurate solution of integer ambiguity is the key to achieve GNSS high-
precision positioning. Based on the lattice theory of high-dimensional ambiguity solving, the …

The high precision positioning of global navigation satellite systems (GNSS), which
essentially corresponds to solving the integer least-squares (ILS) problem in the integer …