RADARSAT-1 image quality and calibration — a continuing success

Srivastava, Satish K.; Hawkins, Richard A.; Banik, B.T.; Adamovic, M.; Gray, R.; Murnaghan, Kevin; Lukowski, T.I.; Jefferies, W.C.

doi:10.1016/s0273-1177(01)00305-2

Cited by 20 publications

(6 citation statements)

References 3 publications

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“…The "dos" function is used in MATLAB to call Nastran, the output mode is dos ("the location path of <nastran.exe> and the location path of .dbf file"). 1 It is worth noting that the large files suffixed with .DBALL, .IFPDAT, and .MASTER will be generated by the running process. With the increase of iteration times, the storage space occupied by the above files will increase.…”

Section: Optimization Strategy Based On Matlab and Nastran Co-simulationmentioning

confidence: 99%

“…Deployable structure has been widely used in the support structure of large space-borne antenna due to its light weight and high storage rate, which is one of the key technologies to realize the on-orbit application of large spaceborne antenna. [1][2][3] Figure 1 shows a new deployable structure that can be applied to the space-borne parabolic cylinder antenna. It contains a large number of components and many factors that affect its deploying process, so it is difficult to fully predict its deploying process and eliminate various faults only through theoretical analysis.…”

Section: Introductionmentioning

confidence: 99%

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Hanger forces optimization of ground test device on deployable structure

Lin

Chen

Zhou

et al. 2021

International Journal of Space Structures

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When using suspension method to simulate the microgravity environment, part of the hanger forces are used to offset the influence of gravitational field on the deployable structure, while the other part produces additional forces that affect the driving forces and precision of the deployable structure. In order to reduce the adverse effect of hanger forces, and avoid the construction of complex finite element theoretical model, an optimization method based on adaptive genetic algorithm with MATLAB and Nastran co-simulation is proposed. Then, the hanger forces are optimized, and the deployable structure deformation has been reduced 49%. It suggests that the adverse effect of hanger forces has been effectively reduced and the proposed optimization method works well.

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Section: Optimization Strategy Based On Matlab and Nastran Co-simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hanger forces optimization of ground test device on deployable structure

Lin

Chen

Zhou

et al. 2021

International Journal of Space Structures

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“…The Canadian Data Processing Facility (CDPF), operated by MacDonald Dettwiler and Associates Ltd (MDA), has remained the reference processing facility for RADARSAT-1 data quality control since the start of the Maintenance Phase in Feb. 1997. Previous reports of the RADARSAT-1 calibration performance at various mission stages since launch can be found [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The RADARSAT-1 imaging performance, 14 years after launch, and independent report on RADARSAT-2 image quality

Srivastava

Côté

Muir

et al. 2010

2010 IEEE International Geoscience and Remote Sensing Symposium

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This paper summarizes the calibration monitoring activities of the Canadian Space Agency (CSA) executed under the RADARSAT Program. The performance history of the RADARSAT-1 SAR since its commissioning in 1996 is reviewed, along with the calibration systems and methodologies used, in the context of the mission's thirteenyear calibration history. Independent image quality measurements for the privately-owned RADARSAT-2, launched in 2008, are also presented. It is shown that the calibration parameters of the RADARSAT-1 SAR have consistently been maintained within the mission's design goals and specifications, mostly thanks to payload stability and timely recalibrations performed using the calibration ground equipment. For RADARSAT-2, CSA's measurements report outstanding image quality levels.

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“…Previous publications on RADARSAT-1 performance may be consulted for further information describing image quality and calibration performance since launch [2]- [3]- [4]- [5].…”

Section: Introductionmentioning

confidence: 99%

RADARSAT-1 image quality maintained in extended mission

Srivastava

Dantec

Gray

et al.

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477)

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RADARSAT-1, the first Canadian SAR remote sensing satellite has successfully completed its design lifetime of five and a quarter years. It is in extended mission operation meeting customer demands. The Image Quality Control program is kept fully operational. Measured results indicate image quality performance is better than system specification and maintained. This paper briefly describes image quality results and recalibration work.

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RADARSAT-1 image quality and calibration — a continuing success

Cited by 20 publications

References 3 publications

Hanger forces optimization of ground test device on deployable structure

Hanger forces optimization of ground test device on deployable structure

The RADARSAT-1 imaging performance, 14 years after launch, and independent report on RADARSAT-2 image quality

RADARSAT-1 image quality maintained in extended mission

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