The authors attempted to estimate rice-planted areas using multi-temporal RADARSAT fine-mode and ERS1/SAR data in an early period of rice-planting season. The eastern part of Hiroshima City, HigashiHiroshima City, was selected as the test field, and three multi-temporal RADARSAT fine-mode images and ERS-1/SAR images, taken before and after rice-planting were used as the test data. From the firs...

This paper focuses on Design and Implementation of 10 Bit, 2MS/s successive approximation Register (SAR) Analog to digital converter (ADC) using Split DAC architecture. This SAR ADC architecture is designed and simulated using GPDK 0.18um CMOS technology. It consists of different blocks like sample and hold, comparator, Successive Approximation Register (SAR) and Split Digital to analog convert...

SAR sensors are able to operate under nearly all weather conditions, at daylight or in the night. This is especially beneficial for event-driven applications, like time-critical change-detection for disaster management. Unfortunately, SAR systems suffer from occlusions and ambiguities, especially in urban areas. Additionally, due to layover and foreshortening effects, the geo-referencing of SAR...

This paper introduces a new and novel radar interferometry based on Doppler synthetic aperture radar (Doppler-SAR) paradigm. Conventional SAR interferometry relies on wideband transmitted waveforms to obtain high range resolution. Topography of a surface is directly related to the range difference between two antennas configured at different positions. Doppler-SAR is a novel imaging modality th...

a r t i c l e i n f o a b s t r a c t Synthetic Aperture Radar (SAR) provides high resolution images of terrain and target reflectivity. SAR systems are indispensable in many remote sensing applications. Phase errors due to uncompensated platform motion degrade resolution in reconstructed images. A multitude of autofocusing techniques has been proposed to estimate and correct phase errors in SA...

By acquiring information over a wide area regardless of weather conditions and solar illumination, space-borne Synthetic Aperture Radar (SAR) has the potential to be a promising application for traffic monitoring. However, the backscatter character of a vehicle in a SAR image is unstable and varies with image parameters, such as aspect and incidence angle. To investigate vehicle detectability i...

Local leaf infections by a necrogenic pathogen can lead to systemic acquired resistance (SAR) in untreated leaves. We reasoned that, whatever the nature of the long-distance signal, if it is transported in the phloem, the pattern of SAR induced within the plant by treatment of a single leaf should match the pattern of translocation out of that leaf. The source-sink relationships (orthostichies)...

The paper focuses on the differential interferometric SAR (Synthetic Aperture Radar) technique for the monitoring of terrain surface deformations. The paper begins with a concise description of the properties of the differential interferometric phase, which represents the main observation for the estimation of the deformations. Then the paper discusses of the main features of a new interferomet...

As robots are increasingly used in Search and Rescue (SAR) missions, it becomes highly relevant to study how SAR robots can be developed and deployed in a responsible way. In contrast to some other robot application domains, e.g. military and healthcare, the ethics of robot-assisted SAR are relatively under examined. This paper aims to fill this gap by assessing and analyzing important values a...

– In April and October 1994 X–SAR was flown on a Space Shuttle as a component of the 3 frequency Space Radar Laboratory SIR–C/X–SAR. While both missions were scheduled to investigate seasonal changes, 3 days of the October mission were optimized for SAR interferometry. At DLR all X–SAR data are analyzed and processed to precision images. During the analysis raw data parameters like chirp phase ...