Results 21 to 30 of about 3,063 (257)
RPC-Based Orthorectification for Satellite Images Using FPGA
Conventional rational polynomial coefficients (RPC)-based orthorectification methods are unable to satisfy the demands of timely responses to terrorist attacks and disaster rescue.
Rongting Zhang +4 more
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A globally asymptotically stable polynomial vector field with rational coefficients and no local polynomial Lyapunov function [PDF]
We give an explicit example of a two-dimensional polynomial vector field of degree seven that has rational coefficients, is globally asymptotically stable, but does not admit an analytic Lyapunov function even locally.
Amir Ali Ahmadi, Bachir El Khadir
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The excellent performance of geometric positioning of a newly launched satellite will greatly broaden its application field. Launched on January 15, 2020, the Hongqi-1-H9 wide-range satellite is the largest sub-meter-level satellite worldwide and the ...
Wenping Song +6 more
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Sums of squares of polynomials with rational coefficients [PDF]
We construct families of explicit (homogeneous) polynomials f over \mathbb Q that are sums of squares of polynomials over \
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Improvement and Assessment of Gaofen-3 Spotlight Mode 3-D Localization Accuracy
The spotlight image acquired by the Gaofen-3 satellite has a resolution of 1 m, which has great potential for 3-D localization. However, there have been no public reports on the 3-D localization accuracy evaluation of Gaofen-3 spotlight synthetic ...
Nuo Chen +4 more
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CALIBRATION AND VALIDATION OF THE ADVANCED LAND OBSERVING SATELLITE-3 “ALOS-3” [PDF]
The “Advanced Land Observing Satellite-3” (ALOS-3, nicknamed “DAICHI-3”) is the next high-resolution optical mission as a successor of the optical mission by the Advanced Land Observing Satellite (ALOS, “DAICHI”) in Japan Aerospace Exploration Agency ...
T. Tadono +5 more
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Approximation by rational functions with polynomials of positive coefficients as the denominators
Summary: The present paper proves that if \(f(x)\in C_{[0,1]}\), changes its sign exactly \(l\) times at \(0< y_1 ...
Yu, Dansheng, Zhou, Songping
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SARPointNet: An Automated Feature Learning Framework for Spaceborne SAR Image Registration
Accurate registration between synthetic aperture radar (SAR) images is the basis for high-precision geometric correction of SAR images. The feature points extracted by conventional feature extraction methods are unsatisfactory, which are affected by ...
Xin Li +6 more
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Bias Compensation for Rational Polynomial Coefficients of High-Resolution Satellite Imagery by Local Polynomial Modeling [PDF]
The Rational Function Model (RFM) is a widely used generic sensor model for georeferencing satellite images. Owing to inaccurate measurement of satellite orbit and attitude, the Rational Polynomial Coefficients (RPCs) provided by image vendors are commonly biased and cannot be directly used for high-precision remote-sensing applications. In this paper,
Xiang Shen +3 more
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With very high resolution satellite (VHRS) imagery of 0.5 m, WorldView-2 (WV02) satellite images have been widely used in the field of surveying and mapping.
Jiang Ye, Xu Lin, Tao Xu
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