scholarly journals Accuracy Assessment of a Variety of GPS Data Processing, Online Services and Software

2021 ◽  
Vol 15 (4) ◽  
pp. 5-19
Author(s):  
Israa H. Mohammed ◽  
Tariq N. Ataiwe ◽  
Hisham Al Sharaa
Keyword(s):  
Data Processing ◽  
Accuracy Assessment ◽  
Gps Data ◽  
Network Adjustment ◽  
Online Processing ◽  
Gps Processing ◽  
Gps Data Processing ◽  
Processing Software ◽  
The Difference ◽  
Offline Processing

The processing of GPS observations in precise positioning is complex and requires professional surveyors since it must be carried out after each static measurement. In GPS network adjustment, the obtaining of the correct coordinates of the determined point is possible after determining the components of GPS vectors and aligning the networks of these vectors, while PPP requires the availability of precise products for the reference satellites orbits and clock. For that reason, surveyors can take advantage of free online GPS data processing. In this paper, the authors compare the results obtained from different sources of free online GPS data processing (AUSPOS, OPUS, CenterPoint RTX, APPS, MagicGNSS, CSRS-PPP, GAPS, and SCOUT) in terms of their accuracy, availability, and operation. This is then compared with free GPS processing software (gLAB and RTKLIB), and finally with commercial software (TBC Trimble Business Center). The results show that online processing services are more accurate than offline processing software, which indicates the strength of their algorithms and processes. The CSRS-PPP online service had the best results. The difference between the relative solution of AUSPOS and OPUS, and CSRS-PPP is insignificant.

Research on Data Process of GPS in Road Surveying

2012 ◽  
Vol 433-440 ◽  
pp. 6007-6013
Author(s):  
Wei Duo Huang
Keyword(s):  
Data Processing ◽  
Gps Data ◽  
Gps Measurements ◽  
Highway Engineering ◽  
Gps Positioning ◽  
Engineering Theory ◽  
Data Process ◽  
Data Processing Software ◽  
Gps Data Processing ◽  
Processing Software

In this paper, absorbing the domestic and foreign research results of GPS positioning technology, it is based on further GPS measurements in the highway engineering theory and methods in a systematic study of the GPS data processing process. It also introduces the high-precision GPS data processing software GAMIT. It also gives and analyzes the highway GPS data processing results from control measurements.

Intelligent Clothing Embedded GPS Data Processing Based on Shifting Huffman Coding

2012 ◽  
Vol 195-196 ◽  
pp. 1116-1121
Author(s):  
Fu Xiang He ◽  
Li Hong Ren ◽  
Yong Sheng Ding
Keyword(s):  
Data Processing ◽  
Huffman Coding ◽  
Practical Significance ◽  
Gps Data ◽  
Data Processing Method ◽  
Direct Data ◽  
Gps Data Processing ◽  
Gps System ◽  
Intelligent Clothing ◽  
Non Destructive

According to the characteristic of GPS system fo intelligent garment, this paper presents a strategy of GPS data processing by removing redundant information and shifting the combination codes. Its compressed result is analyzed by comparing with direct data compression and Huffman coding. The above-mentioned strategy takes into account both the speed and the effect of the compression, and has a good performance in the compression rate. The non-destructive GPS data processing method has a positive and practical significance in the intelligent garment for efficient monitoring.

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