RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by the Indian Space Research Organization (ISRO). They provide all-weather surveillance using synthetic aperture radars (SAR).

2023年8月9日 · Launched in April 2009, Radar Imaging Satellite-2 (RISAT-2) is an X-band SAR (Synthetic Aperture Radar) reconnaissance satellite of the Indian Space Research Organization (ISRO). As India’s first satellite with a SAR instrument, data acquired from RISAT-2 significantly enhanced ISRO’s capability for Earth observation, particularly for the ...

2012年6月13日 · RISAT is a newly developed agile spacecraft, featuring a multi-mode and multi-polarization SAR system in C-band, providing spatial resolutions in the range of 1-50 m on swath widths ranging from of 10-225 km. RISAT-1 comprises around 1400 subsystems, including 300 processors. The active array subsystems are large in number and less on design ...

RISAT-2 was India's first satellite with a synthetic-aperture radar (SAR). It possess day-night as well as all-weather monitoring capability. Potential applications include tracking hostile ships at sea that are deemed a military threat to India.

Radar Satellite-1 (RISAT-1) is a state of the art Microwave Remote Sensing Satellite carrying a Synthetic Aperture Radar (SAR) Payload operating in C-band (5.35 GHz), which enables imaging of the surface features during both day and night under all weather conditions.

RISAT-2B, or Radar Imaging Satellite-2B is an Indian radar reconnaissance satellite that is part of India's RISAT programme and the third satellite in the series. It is built by Indian Space Research Organisation (ISRO) to replace RISAT-2.

2015年5月1日 · The objective of the RISAT mission is to use the all-weather as well as the day-and-night SAR observation capability in applications such as agriculture, forestry, soil moisture, geology, sea ice, coastal monitoring, object identification, and flood monitoring, but also for military surveillance.

2015年5月1日 · It is the country's first indigenous radar observation satellite. RISAT 1 is expected to operate in orbit for five years, making approximately fourteen orbits every day with a ground track which will repeat every 25 days. The first images should be returned from RISAT 1 …