Invited Article: Digital beam-forming imaging riometer systems
نویسندگان
چکیده
منابع مشابه
Adaptive Digital Beam Forming using LMS Algorithm
There is a need of Phased Array Antennas in applications such as wireless communication, RADAR systems. The radiation pattern for this type of antenna has to be narrower sharper in one direction and should have nulls in other directions. In order to achieve this, phased array antennas are designed in such a way so as to steer the beam in required direction automatically. One of the techniques d...
متن کاملHigh Resolution Wide Swath SAR Imaging with Digital Beam- forming – Performance Analysis, Optimization, System Design
Multi-aperture synthetic aperture radar (SAR) systems in combination with an appropriate coherent processing of the individual aperture signals enable high resolution wide swath (HRWS) SAR imaging [1]-[8]. An innovative reconstruction algorithm for such a digital beamforming on receive was presented in [9]-[12] that allows for HRWS even in case of a non-uniformly sampled data array in azimuth. ...
متن کاملASTC-MIMO-TOPS Mode with Digital Beam-Forming in Elevation for High-Resolution Wide-Swath Imaging
Future spaceborne synthetic aperture radar (SAR) missions require complete and frequent coverage of the earth with a high resolution. Terrain Observation by Progressive Scans (TOPS) is a novel wide swath mode but has impaired azimuth resolution. In this paper, an innovative extended TOPS mode named Alamouti Space-time Coding multiple-input multiple-output TOPS (ASTC-MIMO-TOPS) mode combined wit...
متن کاملInvited Review Article
Department of Pharmacology and Toxicology, Kyorin University School of Medicine, 6-20-2, Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan Corresponding author: Naohiko Anzai, M.D., Ph.D. Department of Pharmacology and Toxicology, Kyorin University School of Medicine, 6-20-2, Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan Tel. +81 4224 7551 1 ext. 3452 Fax. +81 4227 9132 1 E-mail: [email protected]...
متن کاملMeasurement of a Multi Feed Reflector Antenna for SAR Systems Based on Digital Beam Forming
In the last years, the Synthetic Aperture Radar (SAR) systems evolution migrates toward the use of multi-channel systems based on Digital Beam Forming (DBF) techniques [1]. This tendendy allows fulfilling stringent SAR requirements, providing high spatial resolution within a wide swath. Moreover, the combination of DBF techniques with parabolic reflector antennas merges both flexibility and hig...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2011
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.3567309