Results 71 to 80 of about 54,797 (199)

Interferometric GPS ambiguity resolution [PDF]

, 2001
The Maximum a Posteriori Ambiguity Search (MAPAS) method for GPS ambiguity resolution is generalized to accommodate: (1) satellite switches caused by satellites rising or falling below the horizon or obstructing terrain, and (2) cycle slips due to ...
Zatezalo, Aleksandar, Poling, T. Craig
core  

Improving GNSS Ambiguity Acceptance Test Performance with the Generalized Difference Test Approach

Sensors, 2018
In Global navigation satellite system (GNSS) data processing, integer ambiguity acceptance test is considered as a challenging problem. A number of ambiguity acceptance tests have been proposed from different perspective and then unified into the integer
Lei Wang, Ruizhi Chen, Lili Shen, Yanming Feng, Yuanjin Pan, Ming Li, Peng Zhang   +6 more
doaj   +1 more source

Code-aided ML ambiguity resolution [PDF]

, 2008
This paper deals with code-aided (CA) maximum-likelihood (ML) phase and timing ambiguity resolution. We propose a methodology based on the sum-product algorithm (SPA) to exactly solve this problem with a tractable complexity.
2007 IEEE International Conference on Communications, Herzet, C., Vandendorpe, Luc   +2 more
core  

Algorithm for the Weak Target Joint Detection and Ambiguity Resolution Based on Ambiguity Matrix

Remote Sensing
The looking-down mode of space airship bistatic radars faces complex sea–land clutter, and the mode of wide-range surveillance and the over-sight detection of the satellite platform generates a low SNR and range–Doppler ambiguity.
Yitong Mao, Chong Song, Bingnan Wang
doaj   +1 more source

Integral GPS and QZSS Ambiguity Resolution [PDF]

, 2004
The US GPS and the planed Quasi Zenith Satellite System (QZSS) will enhance the capability of quickly resolving the integer cycle carrier phase ambiguities in precise differential positioning.
Falin Wu (19972254), Akio Yasuda (72605), N Kubo (8044958)   +2 more
core  

OFDM-Based Carrier Phase Localization With Integer Ambiguity Resolution

IEEE Access
This study introduces a two-stage Time Difference of Arrival (TDoA) localization method using OFDM signals with carrier-phase measurements. Unlike conventional methods, our approach uniquely resolves integer ambiguities in carrier-phase signals by ...
Jai Hyung Cho, Jie Hyun Lee
doaj   +1 more source

Reliable GPS Integer Ambiguity Resolution [PDF]

, 2011
To operate, guide and control vehicles in low visibility conditions, it is critical that the states of the vehicle are accurately estimated, which includes the three dimensional position, velocity, and attitude.
Chen, Anning
core  

Sea-based JPALS ionospheric gradient monitoring based on multi-reference Boolean collaborative decision rule

Satellite Navigation
Anomalous ionospheric gradients are hazardous to the integrity of precision approach operations supported by Sea-Based Joint Precision Approach and Landing System (SB-JPALS).
Xin Xu, Liang Li, Jiachang Jiang, Yilin Wei, Ruifan Tang, Xiuyun Shi   +5 more
doaj   +1 more source

Cascaded Ambiguity Resolution for Pseudolite System-Augmented GNSS PPP

Remote Sensing
Global navigation satellite System (GNSS) precise point positioning (PPP) enables high-precision global positioning using a single receiver, yet its widespread application is hindered by long convergence times.
Caoming Fan, Zheng Yao, Jinling Wang, Mingquan Lu   +3 more
doaj   +1 more source

Why Uncertainty Matters - Discounting under Intertemporal Risk Aversion and Ambiguity [PDF]

Uncertainty has an almost negligible impact on project value in the economic standard model. I show that a comprehensive evaluation of uncertainty and uncertainty attitude changes this picture fundamentally.
Christian Traeger
core