Results 171 to 180 of about 1,729,831 (217)

Multiband integrated synthetic aperture radar (SAR) receiver

2012 19th IEEE International Conference on Electronics, Circuits, and Systems (ICECS 2012), 2012
An integrated receiver consisting of RF front ends, analog baseband chain with an analog to digital converter (ADC) for a Synthetic Aperture Radar (SAR) implemented in 130 nm CMOS technology is presented in this paper. The circuits are integrated on a single chip with a size of 10.88 mm2.
Abu Bakar, F., Holmberg, Jan, Nieminen, T., Nehal, Q., Ukkonen, P., Saari, V., Halonen, K., Åberg, Markku, Sundberg, I.   +9 more
openaire   +5 more sources

Interrupted synthetic aperture radar (SAR)

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200), 2001
The severe timeline demands imposed by the multi-mode functions of modern airborne radars utilizing active array antennas, may result in interrupted SAR data collections and consequent corrupted images. To recover the image quality, we interpolate the missing data using the Burg algorithm, allowing interrupt ratios of up to 30%.
J. Salzman, D. Akamine, R. Lefevre, J.C. Kirk   +3 more
openaire   +1 more source

Transform coding of synthetic aperture radar (SAR) images

ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Transform Coding is a type of source coding that is used to compress the data required for images without substantial loss of fidelity. Transform Coding has been studied by many authors for optical images and the results have shown favorable compression ratios on the order of 10 to 1 without noticeable loss of picture quality. This is due to the highly
Tony Gioutsos, Susan A. Werness
openaire   +2 more sources

Automatic registration of synthetic aperture radar (SAR) images

IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
The huge amount of incoming synthetic aperture radar (SAR) data nowadays demands the need for automatic image registration. Due the presence of speckle noise and the huge size of SAR images, registering SAR images is more difficult than traditional image registration methods. In this paper we present an automatic hierarchical registration method, based
Hiêp Quang Luong, Sidharta Gautama, Wilfried Philips   +2 more
openaire   +1 more source

Synthetic Aperture Radar (SAR) Processing Application

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology, 2005
Scietice Applications Iiiteriiatioiial corporation (SAIC) has deveilopcd a software application for processing raw synthetic aperture radar (SAK) phase liistories. Tlic software allows efficicnt workstation processitig of satellite and aircraft data.
E. Brown, J. McNeil, S. Phillips
openaire   +1 more source

Real-Time Optical Synthetic Aperture Radar (SAR) Processor

Optical Engineering, 1982
A description is given of a real-time optical synthetic aperture radar (SAR). The processor employs an acoustooptic device as the input electronic-to-optical transducer and a CCD camera that serves as the optical detector and simultaneously performs the focusing of the SAR image in the azimuth direction.
WAGNER, K., PSALTIS, D.
openaire   +1 more source

Synthetic Aperture Radar (SAR) and Search and Rescue

2000
Researchers at the Canada Centre for Remote Sensing have explored the uses of remotely sensed imagery to assist Search and Rescue in Canada. Studies concentrated on the uses of SAR imagery for the detection and classification of crashed aircraft.
T I Lukowski, F Charbonneau
openaire   +1 more source

SARAS: a synthetic aperture radar (SAR) raw signal simulator

IEEE Transactions on Geoscience and Remote Sensing, 1992
An SAR simulator of an extended three-dimensional scene is presented. It is based on a facet model for the scene, asymptotic evaluation of SAR unit response, and a two-dimensional fast Fourier transform code for the data processing. Prescribed statistics of the model account for a realistic speckle of the image.
Giorgio Franceschetti, Maurizio Migliaccio, Daniele Riccio, Gilda Schirinzi   +3 more
openaire   +1 more source

A tethered interferometric synthetic aperture radar (SAR) for a topographic mission

IEEE Transactions on Geoscience and Remote Sensing, 1992
Analyzes a spaceborne interferometric synthetic aperture radar (SAR) for high-resolution, topographic applications. Two physical antennas are vertically spaced and are carried along parallel paths by two different platforms connected by a tether. Tethered space systems have been proposed by several authors for different applications and a joint US ...
Antonio Moccia, Sergio Vetrella
openaire   +1 more source

Block compressive sensing in Synthetic Aperture Radar (SAR)

2016 24th Iranian Conference on Electrical Engineering (ICEE), 2016
High rate A/D's, heavy computations, large on board memories and downlink throughput are serious problems of high resolution Synthetic Aperture Radar (SAR). Compressive Sensing (CS) theory states that the sparsity or compressibility of a signal makes it possible to reconstruct the signal from a reduced number of samples. In the current paper, the Block
Peyman Kazemi, Mahmood Modarres-Hashemi, Mohammad Mahdi Naghsh   +2 more
openaire   +1 more source