What is ISAR imaging?
Inverse synthetic-aperture radar (ISAR) is a radar technique using radar imaging to generate a two-dimensional high resolution image of a target. It is analogous to conventional SAR, except that ISAR technology uses the movement of the target rather than the emitter to create the synthetic aperture.
What parameter is independent of range distance in synthetic aperture imaging?
SAR is capable of high-resolution remote sensing, independent of flight altitude, and independent of weather, as SAR can select frequencies to avoid weather-caused signal attenuation. SAR has day and night imaging capability as illumination is provided by the SAR.
What is the full form of Isar?
The Full form of ISAR is Inverse Synthetic-Aperture Radar, or ISAR stands for Inverse Synthetic-Aperture Radar, or the full name of given abbreviation is Inverse Synthetic-Aperture Radar.
What determines the range resolution in radar?
Range resolution is the ability of a radar system to distinguish between two or more targets on the same bearing but at different ranges. The degree of range resolution depends on the width of the transmitted pulse, the types and sizes of targets, and the efficiency of the receiver and indicator.
How does inverse synthetic aperture radar ( ISAR ) work?
Inverse synthetic-aperture radar (ISAR) is a radar technique using radar imaging to generate a two-dimensional high resolution image of a target. It is analogous to conventional SAR, except that ISAR technology uses the movement of the target rather than the emitter to create the synthetic aperture.
What is the purpose of an ISAR radar?
ISAR radars have a significant role aboard maritime patrol aircraft to provide them with radar image of sufficient quality to allow it to be used for target recognition purposes.
How big is a synthetic aperture radar array?
Using such a technique, radar designers are able to achieve resolutions which would require real aperture antennas so large as to be impractical with arrays ranging in size up to 10 m. A Synthetic Aperture Radar was used on board of a Space Shuttle during the Shuttle Radar Topography Mission (SRTM).
How are synthetic aperture radars used in maritime surveillance?
At this point the synthetic aperture is within the target nearfield region and requires focusing. The focusing is accomplished by applying a phase correction to the synthetic aperture. ISAR is used in maritime surveillance for the classification of ships and other objects.
