High-precision Combined Nonuniformity Correction Method Based on Local Constant Statistics

Aircraft control, the training process to locate the aircraft attitude and heading information monitoring requires high-precision gesture as a feedback input, application STM32F103T8 processor design a combination of positioning technology and attitude sensor acquisition system. Measurement module with low power consumption, fast response and high accuracy, the use of high precision MEMS devices with 32-bit processors STM32F103T8 good data processing capabilities. For sensor characteristics, extended Kalman filter algorithm is designed based on dual quaternion vector correction method, enhanced anti-jamming capability; characteristics of complex electromagnetic environment, an improved forward linear prediction filtering method, processing the received GPS data, improving positioning accuracy. The results show that the proposed method effectively suppress noise, gesture detection, accurate and fast.

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A Time Error Correction Method Applied to High-Precision AER Asynchronous CMOS Image Sensor

Journal of Signal Processing Systems ◽

10.1007/s11265-013-0800-0 ◽

2013 ◽

Vol 75 (1) ◽

pp. 1-13 ◽

Cited By ~ 3

Author(s):

Jiangtao Xu ◽

Dongsheng Li ◽

Suying Yao

Keyword(s):

Error Correction ◽

High Precision ◽

Cmos Image Sensor ◽

Correction Method ◽

Image Sensor ◽

Time Error ◽

Error Correction Method

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On Scale Correction Model of Coastline and its Application for Coastline Remote Sensing Monitoring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.303-306.734 ◽

2013 ◽

Vol 303-306 ◽

pp. 734-739

Author(s):

Hua Guo Zhang ◽

Dong Ling Li ◽

Ai Qin Shi

Keyword(s):

Remote Sensing ◽

High Precision ◽

Coastal Zone ◽

Absolute Error ◽

Correction Method ◽

Remote Sensing Images ◽

Correction Model ◽

Remote Sensing Monitoring ◽

Multi Scale ◽

Map Scale

This paper focuses on the scale correction of coastline extracted from remote sensing images. Measurement of coastline is one of the basic and core work of coastal zone remote sensing monitoring projects. Based on analysis of coastline scale effect and multi-scale simulation of coastline, a scale correction method is presented for remote sensing coastline. This method can be used to correct remote sensing coastline to specified map scale, in order to obtain high-precision remote sensing monitoring results of coastline. The results of application example showed that the absolute error of coastline length is reduced to about one third of the original error after correction using the presented method. So the presented method can increase the accuracy of remote sensing coastline for specified scale substantially.

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A New High-Precision Correction Method of Temperature Distribution in Model Stellar Atmospheres

Open Astronomy ◽

10.1515/astro-2017-0154 ◽

2013 ◽

Vol 22 (2) ◽

Author(s):

A. Sapar ◽

R. Poolamäe ◽

L. Sapar

Keyword(s):

Temperature Distribution ◽

High Precision ◽

Linear Optimization ◽

Correction Method ◽

Stellar Model ◽

Temperature Correction ◽

Stellar Atmospheres ◽

Local Source ◽

Plane Parallel ◽

Iteration Loop

AbstractThe main features of the temperature correction methods, suggested and used in modeling of plane-parallel stellar atmospheres, are discussed. The main features of the new method are described. Derivation of the formulae for a version of the Unsöld-Lucy method, used by us in the SMART (Stellar Model Atmospheres and Radiative Transport) software for modeling stellar atmospheres, is presented. The method is based on a correction of the model temperature distribution based on minimizing differences of flux from its accepted constant value and on the requirement of the lack of its gradient, meaning that local source and sink terms of radiation must be equal. The final relative flux constancy obtainable by the method with the SMART code turned out to have the precision of the order of 0.5 %. Some of the rapidly converging iteration steps can be useful before starting the high-precision model correction. The corrections of both the flux value and of its gradient, like in Unsöld-Lucy method, are unavoidably needed to obtain high-precision flux constancy. A new temperature correction method to obtain high-precision flux constancy for plane-parallel LTE model stellar atmospheres is proposed and studied. The non-linear optimization is carried out by the least squares, in which the Levenberg-Marquardt correction method and thereafter additional correction by the Broyden iteration loop were applied. Small finite differences of temperature (

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A High-Precision Lens Distortion Correction Method for Vision Measurement

10.1109/icivc52351.2021.9526923 ◽

2021 ◽

Author(s):

Xiaoping Hu ◽

Cong Zhou ◽

Yu Kang ◽

Xiao Zhou ◽

Xingang Mou

Keyword(s):

High Precision ◽

Correction Method ◽

Distortion Correction ◽

Lens Distortion ◽

Vision Measurement

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Correction of Atmospheric Effect in EnviSAT ASAR Repeat-Pass Interferometry with MODIS Water Vapor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.580-583.2824 ◽

2014 ◽

Vol 580-583 ◽

pp. 2824-2827

Author(s):

Guang Tong Sun ◽

Ping Song ◽

Xiao Yang Liu

Keyword(s):

Water Vapor ◽

Data Fusion ◽

High Precision ◽

Surface Deformation ◽

Atmospheric Correction ◽

Correction Method ◽

Atmospheric Effect ◽

Key Technology ◽

Envisat Asar

The atmospheric phase delay due to tropospheric water vapor has been one of the major limitations for the application of high precision repeat pass InSAR. In this paper, we present the atmospheric correction methods and key technology for ASAR interferograms with MODIS integrated water vapor data, then, conduct the atmospheric corrections using ASAR interferometric pair over the Taiyuan region as examples. The experimental results show that the MODIS\ASAR atmospheric correction method can greatly improve the quality of interferogram, and the deformation inversion accuracy can be significantly improved, verify the necessity and reliability of MODIS and ASAR data fusion for obtaining information of surface deformation.

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