GNSS antenna phase center variation calibration for attitude determination on short baselines

Navigation ◽  
2018 ◽  
Vol 65 (4) ◽  
pp. 643-654 ◽  
Author(s):  
Daniel Willi ◽  
Michael Meindl ◽  
Hui Xu ◽  
Markus Rothacher
Keyword(s):  
Attitude Determination ◽  
Phase Center ◽  
Antenna Phase ◽  
Phase Center Variation ◽  
Antenna Phase Center ◽  
Short Baselines

scholarly journals Research on Attitude Models and Antenna Phase Center Correction for Jason-3 Satellite Orbit Determination

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2408
Author(s):  
Mingming Liu ◽  
Yunbin Yuan ◽  
Jikun Ou ◽  
Yanju Chai
Keyword(s):  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Satellite Orbit ◽  
Event File ◽  
Phase Center ◽  
Special Cases ◽  
Antenna Phase ◽  
The Difference ◽  
Phase Center Variation ◽  
Antenna Phase Center

We focused on the researches of two models used for Jason-3 precise orbit determination (POD)—Jason-3 attitude modes and receiver phase center variation (PCV) model. A combined attitude mode for the Jason-3 satellite is designed based on experimental analysis used in some special cases, such as in the absence of quaternions or when inconvenient to use. We researched the linking of satellite attitude with antenna phase center. Specially, to verify the validity of the combined attitude, we analyzed the effects of different attitude modes on receiver phase center offset (PCO) estimation, PCO correction and POD. Meanwhile, the difference analysis of PCO correction based on attitude modes also contains the combined attitude modeling processes. The POD results showed that the orbital accuracies with the combined attitude are slightly more stable than those with attitude event file. By introducing receiver PCVs into POD, the mean residuals root-mean-square (RMS) is reduced by 1.9 mm and orbital 3D-RMS position difference is improved by 5.7 mm. The eight schemes were designed to integratedly verify the effectiveness of different attitude modes and receiver PCVs model. The results conclude that the accuracy using the combined attitude is higher than that of event file, which also prove the feasibility of the combined attitude in integrated POD and it can be as a revision of attitude event file. Using all mentioned attitude modes, the orbital accuracy by introducing PCVs can be improved by the millimeter level. The integrated effects of attitude modes and receiver PCVs on POD are almost consistent with the effects of a single variable. The optimal results of Jason-3 POD indicate that orbital mean radial RMS is close to 1 cm, and the 3D-RMS position difference is within 3 cm.

scholarly journals SHORT STATIC GPS/GLONASS OBSERVATION PROCESSING IN THE CONTEXT OF ANTENNA PHASE CENTER VARIATION PROBLEM

2015 ◽  
Vol 21 (1) ◽  
pp. 213-230 ◽  
Author(s):  
Karol Dawidowicz ◽  
Rafal Kazmierczak ◽  
Krzysztof Swiatek
Keyword(s):  
Vertical Component ◽  
Phase Center ◽  
Positioning Systems ◽  
Height Determination ◽  
Antenna Phase ◽  
Measurement Session ◽  
Visible Effect ◽  
Phase Center Variation ◽  
Antenna Phase Center ◽  
Phase Center Variations

So far, three methods have been developed to determine GNSS antenna phase center variations (PCV). For this reason, and because of some problems in introducing absolute models, there are presently three models of PCV receiver antennas (relative, absolute converted and absolute) and two satellite antennas (standard and absolute). Additionally, when simultaneously processing observations from different positioning systems (e.g. GPS and GLONASS), we can expect a further complication resulting from the different structure of signals and differences in satellite constellations. This paper aims at studying the height differences in short static GPS/GLONASS observation processing when different calibration models are used. The analysis was done using 3 days of GNSS data, collected with three different receivers and antennas, divided by half hour observation sessions. The results show that switching between relative and absolute PCV models may have a visible effect on height determination, particularly in high accuracy applications. The problem is especially important when mixed GPS/GLONASS observations are processed. The update of receiver antenna calibrations model from relative to absolute in our study (using LEIAT504GG, JAV_GRANT-G3T and TPSHIPER_PLUS antennas) induces a jump (depending on the measurement session) in the vertical component within to 1.3 cm (GPS-only solutions) or within 1.9 cm (GPS/GLONASS solutions).

Experimental Determination of DRW Antenna Phase Center at mm-Wavelengths Using a Planar Scanner: Comparison of Different Methods

2011 ◽  
Vol 59 (8) ◽  
pp. 2806-2812 ◽  
Author(s):  
Pablo Padilla ◽  
Patrik Pousi ◽  
Aleksi Tamminen ◽  
Juha Mallat ◽  
Juha Ala-Laurinaho ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Phase Center ◽  
Antenna Phase ◽  
Antenna Phase Center

A fast approach for antenna phase center evaluation

2014 ◽  
Author(s):  
S. Perna ◽  
C. Esposito ◽  
A. Pauciullo ◽  
P. Romano ◽  
A. Gifuni
Keyword(s):  
Phase Center ◽  
Fast Approach ◽  
Antenna Phase ◽  
Antenna Phase Center
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