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Combined measuring device using machine interference synthetic aperture radar base line

A technique of interfering synthetic aperture and measurement devices, applied in the directions of measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc.

Inactive Publication Date: 2005-11-09
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Combined measuring device using machine interference synthetic aperture radar base line
  • Combined measuring device using machine interference synthetic aperture radar base line

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[0018] Aiming at the situation that the two antennas of the existing airborne interferometric synthetic aperture radar (interferometric SAR) are installed under the wings of the aircraft, the invention invents a device for dynamically measuring the precise positions of the two receiving antennas under the wings. The device integrates two digital cameras, two laser range finders and an inertial measurement unit (IMU).

[0019] The digital camera and laser range finder measure the instantaneous position and attitude of the interferometric synthetic aperture radar (interferometric SAR) antenna, and the inertial measurement unit (IMU) measures the position and attitude of the platform where the digital camera and laser range finder are located. The combination of the three finally realizes Dynamic Measurement of Interferometric Synthetic Aperture Radar (Interferometric SAR) Dual Antennas.

[0020] The device of the present invention comprehensively utilizes the principle and techn...

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Abstract

The invention discloses an assembled device for detecting the plane-carried intervening composing aperture radar baseline. A rigid platform is installed on the bottom of a plane. There are two digital cameras, two laser range finder and an inertia detector. In the meanwhile, each intervening synthetic aperture radar antenna has several obvious LBD signs. These two cameras lenses face LBD signs on the antennas separately. The two cameras, two laser range finder and the inertia detector are all linked with the control processor, and for communication. The digital cameras and the laser range finder measure the moment position and pose of the intervening composing aperture radar antenna while the inertia detector measures the position and pose of the platform with the camera and the laser range finder. These three aspects unite together to realize the dynamic measurement of the interference synthetic aperture radar two-antenna.

Description

technical field [0001] The present invention relates to a kind of combined measurement device of airborne interferometric synthetic aperture radar (interferometric SAR) baseline, specifically relates to a kind of using two digital cameras, two laser rangefinders and an inertial measurement unit (IMU), to hang It is a combined device for precise and dynamic measurement of the position and attitude of two radar receiving antennas of the Interferometric Synthetic Aperture Radar (Interferometric SAR) hung under the wing of the aircraft. Background technique [0002] At present, the systems for dynamic measurement of the baseline of Interferometric Synthetic Aperture Radar (InSAR) mainly include the US-German Space Shuttle Interferometric SAR System (SRTM) and the US GeoSAR Airborne Interferometric SAR System. [0003] The length of the SRTM interferometric baseline is 60 meters, and the measurement system is composed of GPS positioning, inertial reference unit, star tracker, ele...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90
Inventor 吴一戎彭海良王卫延尤红建向茂生洪隆昌
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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