synthetic aperture


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synthetic aperture

[sin′thed·ik ′ap·ə·chər]
(engineering)
A method of increasing the ability of an imaging system, such as radar or acoustical holography, to resolve small details of an object, in which a receiver of large size (or aperture) is in effect synthesized by the motion of a smaller receiver and the proper correlation of the detected signals.
References in periodicals archive ?
By type, the market is divided into Multiple Synthetic Aperture Radar (SAR) Images and Two Synthetic Aperture Radar (SAR) Images.
In the applications of wideband inverse synthetic aperture radar (ISAR) imaging, the reconstructed HRRPs are rearranged into a two-dimensional (2D) matrix (the number of range cells against the number of pulses) and the final ISAR image can be obtained via the azimuth compression algorithm on the 2D matrix after target motion compensation [18].
Synthetic aperture radar (SAR) systems have been used for remote sensing applications for the last several decades [1].
Jin (Fudan U., China) and Xu, with a US artificial intelligence company, examines some recent research into both theoretical and numerical aspects of retrieving information through polarimetric imagery of synthetic aperture radar (SAR).
Synthetic aperture radars (SARs) are used in many applications due to their ability to perform high-resolution imaging of Earth's surface [1-4].
ACTIVE SYNTHETIC APERTURE SONAR (SAS) IS A POWERFUL IMAGING TECHNIQUE THAT COHERENTLY COMBINES ECHOES FROM MULTIPLE PINGS ALONG THE TRAJECTORY OF A SURVEY PATH TO CONSTRUCT A LONG VIRTUAL ARRAY OF HYDROPHONES, WHICH ARE MICROPHONES DESIGNED TO BE USED UNDERWATER FOR RECORDING OR LISTENING TO UNDERWATER SOUND.
Since then, the principle of synthetic aperture and SAR have been recognized and supported with continuous development at research laboratories in various countries.
Desert Storm underscored the reality that the synthetic aperture radar has become indispensable to military operations because of the clarity of the image that it provides, its day and night application and resistance to interference from bad weather.
The company says it will deliver three lightweight synthetic aperture radar/ground moving target indication payloads to support an evaluation by what it describes as a Onon-NATO export customerO.
Zhengkang Shen of IGCEA and Peking University's Department of Geophysics, and collaborators acquired two kinds of satellite radar data: Advanced Synthetic Aperture Radar (ASAR) data in C-band from ESA's Envisat satellite and Phased Array type L-band Synthetic Aperture Radar (PALSAR) data from Japan's ALOS satellite.
The main objective of the project is to deliver new technology solutions in the field of light and compact unmanned aerial vehicle (UAV) radio frequency payloads with the combination of synthetic aperture radar/moving target indicator (SAR/MTI) and electronic support measures.

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