in this paper, a block-based method in wavelet domain for sar image coding is presented based on the ezbc algorithm. to better preserve edges and textural structure in sar images, instead of using traditional dyadic wavelet transform, a packet wavelet is employed. to improve the efficiency of the ezbc algorithm for sar image coding, a modified version of this algorithm, is proposed. this modifi...

The asynchronous transfer mode (ATM) adaptation layer type 1 (AAL1) segmentation and reassembly (SAR) are designed and implemented by the field programmable gate array (FPGA). The SAR header is generated and processed in the FPGA and the SAR payload is stored in an external first-in–firstout (FIFO) device. A method to recover the source clock, called synchronous residual time stamp (SRTS), is i...

In this paper we propose a new statistical model for SAR images. According to this model, the SAR image amplitude follows a product of Rayleigh and Bessel functions. We derive the maximum likelihood feature detector for extracting terrain features from Synthetic Aperture Radar (SAR) images. The terrain features are classified as ridges and ravines according to their statistical properties and s...

Implemented 5-bit 125-MS/s successive approximation register (SAR) analog to digital converter (ADC) on FPGA is presented in this paper.The design and modeling of a high performance SAR analog to digital converter are based on monotonic capacitor switching procedure algorithm .Spartan 3 FPGA is chosen for implementing SAR analog to digital converter algorithm. SAR VHDL program writes in Xilinx ...

The author introduces the status of the Japan Aerospace Exploration Agency’s synthetic aperture radar (SAR) programmes and their scientific returns from the last 20 years of activity. The Earth observation programme was started using active microwave sensors in the early 1990s. Spaceborne SAR aboard Japanese Earth Resource’s Satellite-1 (JERS-1) was the pathfinder, and airborne polarimetric and...

Hong Kong Med J Vol 1 No 5 Supplement 5 October 2008 Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China CC Lau, PYK Yue, RNS Wong Research and Development Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China WY Ha Diagnostix Medical Centre Ltd, Hong Kong SAR, China SH Chui Department of Surgery, The Chinese University ...

SAR images have shown to be of high complexity and to require dedicated processing techniques. This paper presents two applications of the wavelet and multiresolution theory to the enhancement and characterization of SAR data. The rst application describes an improved method for speckle reduction. The second method uses a fractal-based texture measure to provide elements for SAR image segmentat...

Authors: Yue XIAO (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China; [email protected]) Bao Ying LIU (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China; [email protected]) Chun Hung CHU (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China, [email protected]) Edward Chin Man LO (Faculty of Dentistry, the University of Hong Kong, Hon...

This paper presents analyses of L1B waveforms in SAR mode and Low-Rate Mode (LRM) over water surfaces from numerical simulations from the CryoSat Mission Performance Simulator (CRYMPS) and from CryoSat-2 satellite measurements. This work was performed as part of the ESA project "Development of SAR Altimetry Studies and Applications over Ocean, Coastal zones and Inland waters (SAMOSA)". The proj...