Error analysis of pixel positioning accuracy of SAR images based on R-D location model

2007 ◽  
Author(s):  
H. B. Luo ◽  
X. F. He ◽  
M. He
Keyword(s):  
Error Analysis ◽  
Location Model ◽  
Sar Images ◽  
Positioning Accuracy

scholarly journals 3D reconstruction and error analysis of multi-view space-borne SAR images under different configurations

2019 ◽  
Vol 2019 (19) ◽  
pp. 5758-5762 ◽  
Author(s):  
Chao Wang ◽  
Xiaolan Qiu ◽  
Fangfang Li ◽  
Bin Lei
Keyword(s):  
Error Analysis ◽  
3D Reconstruction ◽  
Sar Images

Multi-View Stereo Positioning Error Analysis Based on Spaceborne Optics and SAR Images

2018 ◽  
Vol 38 (5) ◽  
pp. 0528003
Author(s):  
李莹莹 Li Yingying ◽  
吴昊 Wu Hao ◽  
常学立 Chang Xueli ◽  
程宇峰 Cheng Yufeng
Keyword(s):  
Error Analysis ◽  
Positioning Error ◽  
Sar Images

Study on Comparison Analysis and Error Analysis of Polarization Ratio Models

2013 ◽  
Vol 655-657 ◽  
pp. 735-739
Author(s):  
Ke Wang ◽  
Yuan Zhang ◽  
Yan Bo Hui ◽  
Feng Wang ◽  
Hong Yan Li ◽  
...  
Keyword(s):  
Wind Speed ◽  
Error Analysis ◽  
Wind Field ◽  
Incidence Angle ◽  
Surface Wind ◽  
Comparison Analysis ◽  
Polarization Ratio ◽  
Sar Images ◽  
Ocean Surface Wind ◽  
Surface Wind Field

Polarization ratio models are key problem for ocean surface wind field retrieval from HH polarization SAR images. This paper studied deeply on various polarization ratio models, and carried on comparison analysis and error analysis about them. We analyzed influence of incidence angle, azimuth, and wind speed for polarization ratio. By using true measurement of polarization ratio, we statistically valuated ability of various polarization ratio models, and proposed the best choice of polarization ratio models. Our research has guide meaning for using polarization ratio models reasonably.

scholarly journals Geo-Positioning Accuracy Improvement of Multi-Mode GF-3 Satellite SAR Imagery Based on Error Sources Analysis

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2333 ◽  
Author(s):  
Niangang Jiao ◽  
Feng Wang ◽  
Hongjian You ◽  
Xiaolan Qiu ◽  
Mudan Yang
Keyword(s):  
Image Registration ◽  
Original Position ◽  
Normal Equation ◽  
Observation System ◽  
Fast Method ◽  
Sar Images ◽  
Error Sources ◽  
Positioning Accuracy ◽  
Registration Method ◽  
Multi Mode

The GaoFen-3 (GF-3) satellite is the only synthetic aperture radar (SAR) satellite in the High-Resolution Earth Observation System Project, which is the first C-band full-polarization SAR satellite in China. In this paper, we proposed some error sources-based weight strategies to improve the geometric performance of multi-mode GF-3 satellite SAR images without using ground control points (GCPs). To get enough tie points, a robust SAR image registration method and the SAR-features from accelerated segment test (SAR-FAST) method is used to achieve the image registration and tie point extraction. Then, the original position of these tie points in object-space is calculated with the help of the space intersection method. With the dataset clustered by the density-based spatial clustering of applications with noise (DBSCAN) algorithm, we undertake the block adjustment with a bias-compensated rational function model (RFM) aided to improve the geometric performance of these multi-mode GF-3 satellite SAR images. Different weight strategies are proposed to develop the normal equation matrix according to the error sources analysis of GF-3 satellite SAR images, and the preconditioned conjugate gradient (PCG) method is utilized to solve the normal equation. The experimental results indicate that our proposed method can improve the geometric positioning accuracy of GF-3 satellite SAR images within 2 pixels.

Antenna trajectory error analysis in backprojection-based SAR images

2014 ◽  
Author(s):  
Ling Wang ◽  
Birsen Yazici ◽  
H. Cagri Yanik
Keyword(s):  
Error Analysis ◽  
Sar Images ◽  
Trajectory Error

Error analysis of stereo positioning based on precise parameter error model for high-resolution airborne SAR images

2008 ◽  
Author(s):  
L. Pang ◽  
F. Pang ◽  
Q. Yan ◽  
W. Q. Dong
Keyword(s):  
High Resolution ◽  
Error Analysis ◽  
Error Model ◽  
Sar Images ◽  
Airborne Sar ◽  
Parameter Error

Error Analysis of the Illuminance Meter Verification System

2011 ◽  
Vol 103 ◽  
pp. 378-382
Author(s):  
Feng Zou ◽  
Jian Wu Wang
Keyword(s):  
Error Analysis ◽  
Theoretical Basis ◽  
Research Needs ◽  
Customer Requirements ◽  
Voltage Fluctuation ◽  
Positioning Accuracy ◽  
Verification System ◽  
Future System ◽  
The Future

In illuminance meter verification system, there are many factors that affect verification accuracy. If we can reduce or avoid these factors, the verification system will improve verification accuracy to meet research needs and customer requirements. This paper analyzes the factors in detail during the testing process, such as positioning accuracy and voltage fluctuation. It will help to provide theoretical basis for the future system improvements.

The Error Analysis of GPS-RTK Construction Stakeout

2013 ◽  
Vol 655-657 ◽  
pp. 1884-1888
Author(s):  
Jin Hong Xu ◽  
Ruo Li Yang ◽  
Bei Bei Zhang
Keyword(s):  
Error Analysis ◽  
Real Time ◽  
External Environment ◽  
Positioning Error ◽  
Positioning Accuracy ◽  
Gps Rtk ◽  
Satellite Signal ◽  
The Impact ◽  
Surveying And Mapping

GPS-RTK technology with real-time , high positioning accuracy and easy to operate features, is widely used in the filed of surveying and mapping; With the improvement of RTK technology, the initialize speed , results accuracy and reliability of the RTK survey will be increasingly higher.Due to the impact of the satellite signal and the external environment, the deviation of the RTK positioning and the lack of necessary checking conditions in RTK surveying, this paper will do some researches and analyses about RTK positioning error to serve the Survey and Mapping Engineering better.

Error Analysis in Electron Beam Lithography System -Thermal Effects on Positioning Accuracy-

1992 ◽  
Vol 31 (Part 1, No. 12B) ◽  
pp. 4253-4256 ◽  
Author(s):  
Hiroya Ohta ◽  
Takashi Matsuzaka ◽  
Norio Saitou ◽  
Katsuhiro Kawasaki ◽  
Kazumitsu Nakamura ◽  
...  
Keyword(s):  
Electron Beam ◽  
Error Analysis ◽  
Electron Beam Lithography ◽  
Thermal Effects ◽  
Positioning Accuracy ◽  
Lithography System

Research of Error Analysis and Positioning Accuracy with Four-Prism of Laser Scanning

2015 ◽  
Vol 42 (9) ◽  
pp. 0914001
Author(s):  
杨蒙蒙 Yang Mengmeng ◽  
万幼川 Wan Youchuan ◽  
徐景中 Xu Jingzhong
Keyword(s):  
Error Analysis ◽  
Laser Scanning ◽  
Positioning Accuracy
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