Results 1 to 10 of about 7,812 (210)

A Star Sensor On-Orbit Calibration Method Based on Singular Value Decomposition [PDF]

Sensors, 2019
The navigation accuracy of a star sensor depends on the estimation accuracy of its optical parameters, and so, the parameters should be updated in real time to obtain the best performance. Current on-orbit calibration methods for star sensors mainly rely
Liang Wu, Qian Xu, Janne Heikkilä, Zijun Zhao, Liwei Liu, Yali Niu   +5 more
doaj   +4 more sources

On-Orbit Geometric Calibration Model and Its Applications for High-Resolution Optical Satellite Imagery

Remote Sensing, 2014
On-orbit geometric calibration is a key technology to guarantee the geometric quality of high-resolution optical satellite imagery. In this paper, we present an approach for the on-orbit geometric calibration of high-resolution optical satellite imagery,
Mi Wang, Bo Yang, Fen Hu, Xi Zang
doaj   +3 more sources

On-Orbit Magnetometer Data Calibration Using Genetic Algorithm and Interchangeability of the Calibration Parameters

Applied Sciences, 2023
Magnetometers are important sensors with applications in the attitude determination and control systems of satellites. CubeSats have certain limitations related to power, mass, and volume.
Dulani Chamika Withanage, Mariko Teramoto, Mengu Cho   +2 more
doaj   +3 more sources

On-Orbit Radiometric Calibration for a Space-Borne Multi-Camera Mosaic Imaging Sensor

Remote Sensing, 2017
As the core and foundational technology, on-orbit radiometric calibration of a space-borne sensor is of great importance for quantitative remote sensing applications.
Yong Xie, Jie Han, Xingfa Gu, Qiyue Liu
doaj   +3 more sources

On-Orbit Calibration Method for Correction Microwave Radiometer of the HY-2 Satellite Constellation

Remote Sensing, 2023
The HY-2D satellite was successfully launched in 2022, which marks the first phase of the HY-2 satellite constellation. In order to reduce the deviation of wet path delay (WPD) between different satellites in the HY-2 satellite constellation and increase
Xiaofeng Ma, Mingsen Lin, Jin Zhao, Yongjun Jia, Chengfei Jiang   +4 more
doaj   +3 more sources

Assessment of S-NPP VIIRS On-Orbit Radiometric Calibration and Performance

Remote Sensing, 2016
The VIIRS instrument on board the S-NPP spacecraft has successfully operated for more than four years since its launch in October 2011. Many VIIRS environmental data records (EDR) have been continuously generated from its sensor data records (SDR) with ...
Xiaoxiong Xiong, James Butler, Kwofu Chiang, Boryana Efremova, Jon Fulbright, Ning Lei, Jeff McIntire, Hassan Oudrari, Zhipeng Wang, Aisheng Wu   +9 more
doaj   +3 more sources

An On-Orbit Calibration Method of Star Sensor Based on Angular Distance Subtraction

IEEE Photonics Journal, 2021
Star sensor needs real-time calibration to improve its navigation accuracy. Compared with other parameters, the position of the principal point is more easily affected by the measurement error, which leads to low calibration accuracy.
Liang Wu, Qian Xu, Chao Han, Kaixuan Zhang   +3 more
doaj   +3 more sources

A General On-Orbit Absolute Radiometric Calibration Method Compatible with Multiple Imaging Conditions

Remote Sensing
On-orbit absolute radiometric calibration is not only a prerequisite for the quantitative application of optical remote sensing satellite data but also a key step in ensuring the accuracy and reliability of satellite observation data.
Liming Fan, Zhongjin Jiang, Shuhai Yu, Yunhe Liu, Dong Wang, Maosheng Chen   +5 more
doaj   +3 more sources

Evaluation of the Radiometric Calibration of ZY1-02E Thermal Infrared Data

Remote Sensing, 2023
Following the launch of the ZY1-02E satellite, the thermal infrared sensor aboard the satellite experienced alterations in the space environment, leading to varying degrees of attenuation in some components.
Honggeng Zhang, Hongzhao Tang, Xining Liu, Xianhui Dou, Yonggang Qian, Wei Chen, Kun Li   +6 more
doaj   +1 more source

A Case Study on the Effect of Atmospheric Density Calibration on Orbit Predictions with Sparse Angular Data

Remote Sensing, 2023
Accurately modeling the density of atmospheric mass is critical for orbit determination and prediction of space objects. Existing atmospheric mass density models (ADMs) have an accuracy of about 15%.
Junyu Chen, Jizhang Sang, Zhenwei Li, Chengzhi Liu   +3 more
doaj   +1 more source