Motion Compensation of Interferometric Synthetic Aperture Radar PDF Download
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Author: David P. Duncan
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 88
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Book Description
Attitude variations cause a Doppler shift and are corrected by limiting the processed azimuth bandwidth or by reversing the frequency shift with a range-dependent filter. Another important area considered is the effects of motion compensation on interferometry. When performing interferometry with YINSAR, motion compensating both channels to a single track has two effects. First, the applied MOCO phase corrections remove the "flat-earth" differential phase from the interferogram. Second, range resampling coregisters the two images. All of these changes have helped to improve YINSAR imagery.
Author: David P. Duncan
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 88
Get Book Here
Book Description
Attitude variations cause a Doppler shift and are corrected by limiting the processed azimuth bandwidth or by reversing the frequency shift with a range-dependent filter. Another important area considered is the effects of motion compensation on interferometry. When performing interferometry with YINSAR, motion compensating both channels to a single track has two effects. First, the applied MOCO phase corrections remove the "flat-earth" differential phase from the interferogram. Second, range resampling coregisters the two images. All of these changes have helped to improve YINSAR imagery.
Author: Huaming Wu
Publisher: KIT Scientific Publishing
ISBN: 3866449062
Category : Technology & Engineering
Languages : en
Pages : 182
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Book Description
The work focuses on the analysis of influences of motion errors on near-range SAR applications and design of specific motion measuring and compensation algorithms. First, a novel metric to determine the optimum antenna beamwidth is proposed. Then, a comprehensive investigation of influences of motion errors on the SAR image is provided. On this ground, new algorithms for motion measuring and compensation using low cost inertial measurement units (IMU) are developed and successfully demonstrated.
Author: Michael Lee Fraser
Publisher:
ISBN:
Category : Imaging systems
Languages : en
Pages : 156
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Book Description
Author: Benjamin Carrasco Flores
Publisher:
ISBN:
Category : Imaging systems
Languages : en
Pages : 710
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Book Description
Author: Huaming Wu
Publisher:
ISBN:
Category : Motion
Languages : en
Pages : 0
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Book Description
Author: David Blacknell
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 89
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Book Description
The purpose of the Signal Based Motion Compensation (SBMC) for Synthetic Aperture Radar (SAR) effort is to develop a method to measure and compensate for both down range and cross range motion of the radar in order to provide high quality focused SAR imagery in the absence of precision measurements of the platform motion. Currently SAR systems require very precise navigation sensors for motion compensation. These sensors are very expensive and are often supplied in pairs for reliability. In the case of GPS they can be jammed, further degrading performance. This makes for a potentially very expensive and possibly vulnerable SAR system. SBMC can eliminate or reduce the need for these expensive navigation sensors thus reducing the cost of budget minded SAR systems. The results on this program demonstrated the capability of the SBMC approach.
Author: Jae Sok Son
Publisher:
ISBN:
Category : Parameter estimation
Languages : en
Pages : 284
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Book Description
Author: Leslie Anne Keller
Publisher:
ISBN:
Category : Imaging systems
Languages : en
Pages : 258
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Book Description
Author: Joao R. Moreira
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
This paper reports a new solution for real time motion compensation. The main idea is to extract all the necessary motions of the aircraft from the radar backscatter signal using a new radar configuration and new methods for evaluating the azimuth spectra of the radar signal. Hence an inertial navigation system becomes unnecessary for a lot of applications. The motion compensation parameters for real time motion error correction are the range delay, the range dependent phase shift and the pulse repetition frequency. The motions of the aircraft to be extracted are the displacement in line of sight (LOS) direction, the aircraft's yaw and drift angle and forward velocity. Results show that a three look image with an azimuth resolution of 3m in L-band using a small aircraft is achievable and the implementation of this method in real time using an array processor is feasible.
