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Your search keyword '"Tang, Shiyang"' showing total 14 results
Start Over Author "Tang, Shiyang" Publisher institute of electrical and electronics engineers (ieee)
14 results on '"Tang, Shiyang"'

3. Signal Modeling and Analysis for Elevation Frequency Scanning HRWS SAR

Author

Zhang Linrang, Liu Nan, Tang Shiyang, and Ge Gai

Subjects
Synthetic aperture radar, Spatial filter, Computer science, Beam steering, 0211 other engineering and technologies, 02 engineering and technology, Signal, symbols.namesake, Frequency domain, symbols, General Earth and Planetary Sciences, Waveform, Electrical and Electronic Engineering, Doppler effect, Algorithm, 021101 geological & geomatics engineering
Abstract

Elevation frequency scanning synthetic aperture radar (EF-SCAN SAR) can isolate range ambiguities in the range-frequency domain. Therefore, range ambiguity suppression can be accomplished through range-frequency bandpass filtering, which can outperform spatial filtering-based ambiguity suppression. In this article, the analytic space–time signal model of an intrapulse frequency scanning array is derived. Based on the analysis of the characteristics of this signal model, waveform design criteria for EF-SCAN SAR are developed to effectively separate the range ambiguities in the range frequency domain. The ground echo model of EF-SCAN SAR is also developed based on this space–time signal model. The impact of intrapulse frequency scanning on the performance of high-resolution and wide-swath (HRWS) imaging is analyzed based on the derivation and analysis of the echo spectrum. Finally, an imaging algorithm for EF-SCAN SAR is developed based on this analysis. Numerical simulations verify the effectiveness of the proposed waveform design criteria and imaging algorithm.

Published
2020

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