A Systematical Study on the Accuracy of Air-Borne InSAR System in DGPS/IMU

Abstract:

With respect to the principle of Digital Elevation Modeling (DEM), through analyzing on the overall measurement accuracy of an InSAR in DGPS/IMU, the authors have mathematically inferred that the dominant factors for system accuracy are: Baseline Length, Baseline Inclination Angle, Radar Side-looking Angle, Phase Difference, the distance from radar antenna to various ground target points, Positioning Coordinate and Velocity of the flying platform, Center Doppler Estimation and such on, put forth a set of delicate formula for the factors on system measurement accuracy and error, verified the aforementioned outcomes by a variety of digital simulations, and thus established the principle in system design for air-borne InSAR system. Therefore, this paper is consequential for surveying and mapping both in theory and engineering.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 714-723
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.714
• Online since: February 2013
• Authors: Si Wei Liu, De Jun Mu, Jian Ge Liu, Liang Sheng Lou
• Keywords: Air-Borne InSAR System, Height Accuracy, Horizon Accuracy, IMU/DGPS

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