9 Result(s)
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Chapter and Conference Paper
Influence Analysis of Multi-LEO Augmentation MEO Satellite Orbit Determination Under Regional Station Layout
Since the ground monitoring stations layout for BeiDou navigation satellite system (BDS) is regional, the problem of bad orbit precision of BDS satellites needs to be resolved. Many scholars propose to use the...
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Chapter and Conference Paper
A New Ambiguity Resolution Method Applied to Uncombined Precise Orbit Determination
With the continuous refinement of multi-GNSS and multi-frequency data processing, there is an increasing interest for the observation model based on uncombined (UC) strategy. Ambiguity resolution is an import...
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Chapter and Conference Paper
Improved TCAR Algorithm for BDS Over Medium-Long Baseline
In the paper, a modified TCAR method was proposed to investigate triple-frequency ambiguity resolution (AR) performance with real BDS data. At first, the extra-wide-lane (EWL), wide-lane (WL) and narrow-lane (...
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Chapter and Conference Paper
INS-Aided Single-Frequency Cycle-Slip Detection for Real-Time Kinematic GNSS
GNSS ambiguity fixed solution can greatly improve the accuracy of GNSS/INS integrated system. But it is difficult to achieve perfect real-time dynamic single frequency cycle-slip detection merely by GNSS obser...
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Chapter and Conference Paper
The Research on Nonlinear Attitude Determination Method of GNSS Multi-antenna Attitude Measurement
GNSS multiple antenna attitude measurement possesses three attitude determination methods, direct solution, nonlinear least squares method and linear least squares method. Normal nonlinear least squares method...
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Chapter and Conference Paper
Gaussian Mixture Filter Based on Variational Bayesian Learning in PPP/SINS
Aiming at the problem of inaccurate estimation of parameters and noise covariance for the noise mixture model encountered when using Gaussian filter during operation of PPP/SINS integrated navigation system in...
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Chapter and Conference Paper
Refining of BDS Differential Code Bias Model
The differential code bias (DCB) in Global Navigation Satellite System (GNSS) satellites should be precisely determined using real ground GNSS data when designing certain applications, such as precise position...
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Chapter and Conference Paper
EMD De-Noising Theory Considering Static and Dynamic Conditions and Its Applications in INS
De-noising IMU data is an important approach to improve the accuracy of INS. Wavelet threshold de-noising has many limitations under certain conditions, especially in processing inertial sensor errors. Based o...
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Chapter and Conference Paper
An Improved Algorithm for Single Point Positioning of COMPASS
The BeiDou (COMPASS) Navigation Satellite System has been able to provide service for areas in China and its surrounding areas. However, due to the limited number of satellites and the low accuracy, its applic...
