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The paper studies tropical deforestation detection in Riau province, Indonesia with L-band ALOS PALSAR and C-band ENVISAT ASAR data. Multiple change measures as SAR image intensity, texture, and temporal variations of ScanSAR time series are extracted and employed for deforestation detection. These measures are then combined for improving the detection with subsequent performance evaluation by comparing...
Time-frequency imaging methods include many base functions, it is hoped that the best can be applied in two dimensional imaging. A experimental radar system is designed. STFT, WVD Harr and morlet wavelet transforms are simulated and compared, which shows WVD has the best quality of the ISAR images.
In high range-resolution radar system, in order to achieve high range resolution, signals having wide bandwidth are required. The higher the working frequency is used, the more bandwidth is got. Stepped frequency waveforms in millimeter wave band is available to get one-dimension multiple scattering centers distribution or the profile, furthermore, two dimension multiple scattering centers distribution...
A 2-D ESPRIT type method is presented for the scattering centers measurements in step-frequency radar. This method estimates the signal parameter pairs directly unlike the matrix enhancement and matrix pencil (MEMP) method which contains an additional step to pair the parameters related to each dimension. We use a forward-backward prediction data matrix to increase the estimation accuracy and the...
Radar target signature is usually measured in near field using step frequency radar system, and Fourier-based methods are conventionally applied to signature processing, but bias lies between near field and far field. RCS is an important signature, which may be extrapolated by simple signal processing algorithm, some results are shown. The one-dimension downrange profiles are also researched based...
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