Accuracy Analysis and Ionospheric Compensation of Radio Navigation and Positioning System under Dynamic Sea Surface Background

2019 ◽  
Author(s):  
Jialin Shi ◽  
Zusheng Jin ◽  
Jianxuan Li ◽  
Anxia Jiao
Keyword(s):  
Sea Surface ◽  
Positioning System ◽  
Accuracy Analysis ◽  
Radio Navigation ◽  
Surface Background

scholarly journals Accuracy Analysis of the InSAR Altimeter in Relative Elevation Measurements of the Sea Surface

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 27783-27789
Author(s):  
Bo Liu ◽  
Zhengfang Lu ◽  
Lifu Chen ◽  
Weiya Kong ◽  
Xiaohong Sui
Keyword(s):  
Sea Surface ◽  
Accuracy Analysis

scholarly journals INVESTIGATION OF PRACTICAL AND THEORETICAL ACCURACY OF WIRELESS INDOOR POSITIONING SYSTEM UBISENSE

2013 ◽  
Vol 95 (1) ◽  
pp. 36-48 ◽  
Author(s):  
Marek Woźniak ◽  
Waldemar Odziemczyk ◽  
Kamil Nagórski
Keyword(s):  
Reference Points ◽  
Positioning System ◽  
Accuracy Analysis ◽  
Positioning Accuracy ◽  
Test Measurement ◽  
Calibration Accuracy ◽  
Indoor Positioning System ◽  
Orientation Parameters ◽  
Measurement Area ◽  
Theoretical Accuracy

Abstract This paper presents the accuracy investigation results and functionality of Ubisense RTLS positioning system. Three kinds of studies were conducted: test of calibration accuracy, analysis of theoretical accuracy of the coordinates determination as well as accuracy measurements in field conditions. Test of calibration accuracy was made with several different geometric constellation of reference points (tag positions). We determined changes of orientation parameters of receivers and disturbance of positioning points coordinates against chosen reference points constellations. Analysis of theoretical accuracy was made for several receivers spatial positions and their orientations. It allowed to indicate favourable and unfavourable measurement area considering accuracy and reliability. Real positioning accuracy of the Ubisense system was determined by comparison with coordinates measured using precise tacheometer TCRP1201+. Results of conducted experiments and accuracy analysis of test measurement were presented in figures and diagrams.

scholarly journals Underwater Positioning Using Near Surface Long Baseline Transponder’s Induced by Wave Motion

2017 ◽  
Author(s):  
Stian S. Sandøy ◽  
Ingrid Schjølberg
Keyword(s):  
Kalman Filter ◽  
Extended Kalman Filter ◽  
Wave Motion ◽  
Weather Conditions ◽  
Sea Surface ◽  
Positioning System ◽  
Motion Model ◽  
Near Surface ◽  
Long Baseline ◽  
Underwater Positioning

This paper presents a filter for underwater positioning in an aquaculture environment with demanding weather conditions. The positioning system is based on acoustic transponders mounted at a net pen on the sea surface. The transponders are exposed to oscillations due to wave disturbance. This will have an impact on the accuracy of the positioning system. An extended Kalman filter (EKF) solution has been proposed including a wave motion model integrated with the pseudo-range measurements from the transponders. Simulations show that the proposed filter compensates well for the disturbances.

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