Calibração Geométrica Em Órbita Do Sensor HRC-Cbers 2b

Rodrigues, Tiago Lima; Machado, Marcela do Valle; Debiasi, Paula; Mitishita, Edson Aparecido; Ferreira, Luiz Danilo Damasceno

doi:10.1590/s1982-21702016000100007

Cited by 1 publication

(2 citation statements)

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“…This is relates to the difficulty of obtaining an accurate measurement of the points in the images due to poor radiometric quality. On-orbit geometrics calibrations of HRC sensor were performed in Zhang and Zheng (2012) and Rodrigues et al (2016). In this last work the values of misalignments between the CCD chips were estimated at a given epoch.…”

Section: Methodsmentioning

confidence: 99%

“…Also in Rodrigues and Ferreira (2013), two HRC images were oriented using Position-Rotation model in conjunction with a 2 nd order polynomial platform model and original UCL Kepler platform model. In Rodrigues et al (2016) on-orbit geometric calibration of HRC sensor was performed using Position-Rotation model and Modified UCL Kepler platform model.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Model for Orientation of Linear Optical Satellite Images Based in the Adaptation of the Orbit-Attitude Model

Rodrigues

Machado

2019

Bol. Ciênc. Geod.

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In this paper a novel model to orient a pushbroom linear optical satellite image is proposed. This one is based in the adaptation of the Orbit-Attitude model for use of the Modified UCL Kepler platform model. It has only the components of satellite position and velocity as unknowns. This implies not only the reduction of unknowns but also the elimination of initial adjustments of the orbit to estimate the polynomial parameters. In order to validate the model, four experiments were conducted using one HRC-CBERS 2B image. Two distributions of ground controls points (GCPs) were tested, 70 and 35 GCPs. A quantity of 43 check points (CPs) was used to analyze the planimetric accuracies of the orientations. For comparisons purpose the image was also oriented with platform model using 2 nd order polynomial. The results showed that the planimetric accuracy difference in the use of the two models is 4 and 6 centimeters in the two mentioned configurations of GCPs, respectively. However, the main advantage of applying the proposed model is the direct use of ephemeris without the necessity of interpolations and preadjustments, which makes the orientation process simpler.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%