In-flight Geometric Calibration and Orientation of ALOS/PRISM Imagery with a Generic Sensor Model

Radhadevi, P. V.; Müller, Rupert; d’Angelo, Pablo; Reinartz, Peter

doi:10.14358/pers.77.5.531

Cited by 39 publications

(18 citation statements)

References 4 publications

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“…The dynamic exterior parameters Mat eI are used for assessing the main bias of location, compensating for the biases of instruments, and determining the attitude of the camera coordinate system in space. The static interior parameters, by adopting the classic viewing angle model [20][21][22][23][24] as shown in Figure 2, are used to accurately describe the viewing directions of every pixel in the satellite's body-fixed system and then improve the internal geometric accuracy of images by correcting the camera distortion. According to the above analysis, the geometric calibration model can be constructed for the TLC of ZY3-02 as expressed in Equation (2):…”

Section: Geometric Calibration Of the Tlc Cameramentioning

confidence: 99%

Geometric Potential Assessment for ZY3-02 Triple Linear Array Imagery

et al. 2017

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ZiYuan3-02 (ZY3-02) is the first remote sensing satellite for the development of China's civil space infrastructure (CCSI) and the second satellite in the ZiYuan3 series; it was launched successfully on 30 May 2016, aboard the CZ-4B rocket at the Taiyuan Satellite Launch Center (TSLC) in China. Core payloads of ZY3-02 include a triple linear array camera (TLC) and a multi-spectral camera, and this equipment will be used to acquire space geographic information with high-resolution and stereoscopic observations. Geometric quality is a key factor that affects the performance and potential of satellite imagery. For the purpose of evaluating comprehensively the geometric potential of ZY3-02, this paper introduces the method used for geometric calibration of the TLC onboard the satellite and a model for sensor corrected (SC) products that serve as basic products delivered to users. Evaluation work was conducted by making a full assessment of the geometric performance. Furthermore, images of six regions and corresponding reference data were collected to implement the geometric calibration technique and evaluate the resulting geometric accuracy. Experimental results showed that the direct location performance and internal accuracy of SC products increased remarkably after calibration, and the planimetric and vertical accuracies with relatively few ground control points (GCPs) were demonstrated to be better than 2.5 m and 2 m, respectively. Additionally, the derived digital surface model (DSM) accuracy was better than 3 m (RMSE) for flat terrain and 5 m (RMSE) for mountainous terrain. However, given that several variations such as changes in the thermal environment can alter the camera's installation angle, geometric performance will vary with the geographical location and imaging time changes. Generally, ZY3-02 can be used for 1:50,000 stereo mapping and can produce (and update) larger-scale basic geographic information products.

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Section: Geometric Calibration Of the Tlc Cameramentioning

confidence: 99%

Geometric Potential Assessment for ZY3-02 Triple Linear Array Imagery

et al. 2017

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“…The above analysis of the external errors of an optical satellite camera indicates that we only need to perform on-orbit calibration for the camera installation angle using multiple scenes of image simultaneously and apply the laboratory calibration result directly as true value of the GPS eccentric vector. (2) At present, a strict physical model similar to Equation (1) is often adopted as the camera internal distortion model [12][13][14]. It is noteworthy that every distortion parameter in the strict physical model has a specific physical significance and its calibration relies on the accurate determination of the principal optic axis.…”

Section: Geometric Calibration Modelmentioning

confidence: 99%

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

Wang

Yang

et al. 2014

Remote Sensing

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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, focusing on two core problems: constructing an on-orbit geometric calibration model and proposing a robust calculation method. First, a rigorous geometric imaging model is constructed based on the analysis of the major error sources. Second, we construct an on-orbit geometric calibration model through performing reasonable optimizing and parameter selection of the rigorous geometric imaging model. On this basis, the calibration parameters are partially calculated with a stepwise iterative method by dividing them into two groups: external and internal calibration parameters. Furthermore, to verify the effectiveness of the proposed calibration model and methodology, on-orbit geometric calibration experiments for ZY1-02C panchromatic camera and ZY-3 three-line array camera are conducted using the reference data of the Songshan calibration test site located in the Henan Province, China. The experimental results demonstrate a certain deviation of the on-orbit calibration result from the initial design values of the calibration parameters. Therefore, on-orbit geometric calibration is necessary for optical satellite imagery. On the other hand, by choosing multiple images, which cover different areas and are acquired at different points in time to verify their geometric accuracy before and after calibration, we find that after on-orbit geometric calibration, the geometric accuracy of these images without ground control points is significantly OPEN ACCESS

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“…To deal with the above issue, on-orbit calibration technique is needed, as discussed in (Wang et al, 2014), (Zhang et al, 2014), and (Li and Wang, 2012). Currently, the method based on a geometric calibration site is usually adopted for onorbit calibration, as described by (Breton et al, 2002), (Radhadevi et al, 2011), (Zhang, 2012), and (Wang et al, 2017). However, this method is significantly affected by weather, topography and other conditions.…”

Section: Introductionmentioning

confidence: 99%

Exploiting Auto-Collimation for Real-Time Onboard Monitoring of Space Optical Camera Geometric Parameters

Liu

Wang

Liu

et al. 2018

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Precise geometric parameters are essential to ensure the positioning accuracy for space optical cameras. However, state-of-the-art onorbit calibration method inevitably suffers from long update cycle and poor timeliness performance. To this end, in this paper we exploit the optical auto-collimation principle and propose a real-time onboard calibration scheme for monitoring key geometric parameters. Specifically, in the proposed scheme, auto-collimation devices are first designed by installing collimated light sources, area-array CCDs, and prisms inside the satellite payload system. Through utilizing those devices, the changes in the geometric parameters are elegantly converted into changes in the spot image positions. The variation of geometric parameters can be derived via extracting and processing the spot images. An experimental platform is then set up to verify the feasibility and analyze the precision index of the proposed scheme. The experiment results demonstrate that it is feasible to apply the optical auto-collimation principle for real-time onboard monitoring.

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In-flight Geometric Calibration and Orientation of ALOS/PRISM Imagery with a Generic Sensor Model

Cited by 39 publications

References 4 publications

Geometric Potential Assessment for ZY3-02 Triple Linear Array Imagery

Geometric Potential Assessment for ZY3-02 Triple Linear Array Imagery

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

Exploiting Auto-Collimation for Real-Time Onboard Monitoring of Space Optical Camera Geometric Parameters

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