Results 191 to 200 of about 30,622 (235)

The SIR-C/X-SAR synthetic aperture radar system

Proceedings of the IEEE, 1991
The SIR-C/X-SAR synthetic aperture radar, a three-frequency radar to be flown on the Space Shuttle in September 1993, is described. The SIR-C system is a two-frequency radar operating at 1250 MHz (L-band) and 5300 MHz (C-band), and is designed to get four-polarization radar imagery at multiple surface angles. The X-band synthetic aperture radar (X-SAR)
R L Jordan
exaly   +4 more sources

The evolution of synthetic aperture radar systems and their progression to the EOS SAR

IEEE Transactions on Geoscience and Remote Sensing, 1991
The authors describe the evolution of the spaceborne imaging radar starting with the Seasat SAR, through the SIR-A, SIR-B, and SIR-C/X-SAR missions, to the Earth Observing System (Eos) SAR which is scheduled for launch as part of Eos in the late 1990s.
J Way, E A Smith
exaly   +2 more sources

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   +4 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

Synthetic aperture radar (SAR)

2020
This chapter introduced the basic concepts of SAR and the principle of 2D target resolution. Obtaining high range resolution with wideband signal and high azimuth resolution with long synthetic array is the basis of the 2D high-resolution imaging. RDA is widely used in SAR imaging processing. Azimuth-translation invariance is the key of RDA.
null Guangcai Sun, null Mengdao Xing, null Liang Guo   +2 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   +1 more source

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

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