【摘 要】
：
The implementation of precise point positioning ambiguity fixing depends on the products which can be used to recover the characteristics of ambiguity by the service side.When users need to implement
【机 构】
：
Information Engineering University, Zheng Zhou. 450001,China
论文部分内容阅读
The implementation of precise point positioning ambiguity fixing depends on the products which can be used to recover the characteristics of ambiguity by the service side.When users need to implement the single-difference between satellite method and the decoupled clock method they have no way to achieve the products so they must provide the products themselves hardly,but when users need to implement the Integer Phase Clock method they can use the wide-lane FCB and integer phase clock provided by CNES.Therefore,in this paper we put forward the algorithm of sequential ambiguity fixing with direct rounding and analyse the effects of ambiguity fixing kinematic PPP based on this method.Firstly we analyse the principle of PPP ambiguity fixing based on the models,and then we introduce the algorithm about how the users to implement Integer Phase Clock method.At last,based on the principle analysis we design the single-day and two-hour dynamic experiments which simulated by static data.Results of numerous stations show that: the algorithm of sequential ambiguity fixing with direct rounding can significantly improve the accuracy of positioning and the east show more obvious effects,the improvement proportion of single-day and two-hour were approx-imately thirty present and sixty present,so the result can verify the validity of the method proposed.
其他文献
The triangulation location is the same mathematical principles of the Global Navigation Satellite Systems (GNSS) and the double-star positioning system,and the range between the navigation satellite a
For the tight integration of GPS and the Strong-Motion records,in order to obtain high precision co-seismic waves,theprecise separation of the moving state and the baseline shift is much important and
In view of the present problems of BDS receiver in the indoor weak signal environments is faced with strong signal attenuation,the NLOS propagation,cross-correlation effects,the A-BDS coarse-time navi
In this paper,a novel unambiguous W2 CCRW multipath mitigation algorithm is applied to BOC (n,n) signals.We investigate a novel BOC (n,n) ambiguous tracking method with W2 CCRW (Code Correlation Refer
Navigation signal based on compound carrier (NSCC),the novel modulation scheme for navigation augmentation,hasthe special multi-carrier structure and flexible structure parameters,which enables it pos
This paper evaluates the precision of iGMAS orbit and clock products,and analyzes their consistency.By the methods of orbit comparisons and day boundary discontinuities (DBDs),the iGMAS orbit precisio
Numerical integration assumes that accelerations at each node are continuous and smooth.However,when satellite enters into shadow,perturbation caused by solar radiation pressure will jump.Therefore,ma
Vision based navigation has been widely accepted as a promising approach to obtain position and orientation information in GNSS-denied environments.However,due to the complexity of such environment,a
Ambiguity validation is a critical step in the quality control of ambiguity resolution.It is realized by the so-called integer aperture (IA) estimator.In order to apply the IA estimation into practice
When an inertial navigation system regains avalid aiding navigation signal after a long-term outage,normal state feedback correction in the Kalman Filter will cause a large instantaneous jump in the n