Miniature SAR remote sensing observation method based on multi-rotor unmanned aerial vehicle

Abstract

The invention discloses a miniature SAR remote sensing observation method based on a multi-rotor unmanned aerial vehicle. Systems used in the method comprise a multi-rotor unmanned aerial vehicle system and a miniature SAR observation system. The miniature SAR observation system is composed of an SAR radar host, an IMU inertial navigation system, a radar radio frequency antenna, a GPS module, a radar control device, and a battery module, wherein the radar control device is connected with the SAR radar host through a USB3.0 or serial port, the IMU inertial navigation system and the battery module are connected with the SAR radar host through whole machine cables, and the GPS module and the radar radio frequency antenna are connected with the SAR radar host through a coaxial cable and a radio frequency coaxial cable respectively. The miniature SAR observation system is connected with the multi-rotor unmanned aerial vehicle system through the GPS module. Through the method, the flight cost of SAR image acquisition is reduced effectively, and rapid deployment and fast imaging of the miniature SAR observation system are realized. The method has the advantages of simple operation, convenient use and low price.

Description

technical field [0001] The invention relates to a SAR remote sensing observation method, in particular to a miniature SAR remote sensing observation method based on a multi-rotor unmanned aerial vehicle. Background technique [0002] Synthetic Aperture Radar (SAR) is an imaging radar capable of high resolution in range and high resolution in azimuth. It uses synthetic aperture technology based on Doppler frequency shift theory and radar coherence to break through the limitation of real aperture antenna on azimuth resolution, combined with pulse compression technology, it realizes two-dimensional high resolution of long-distance targets imaging, enabling the acquisition of high-resolution radar images of large areas. At present, there are two main methods of SAR remote sensing observation technology: spaceborne SAR and airborne SAR. [0003] For spaceborne SAR, due to the long ground coverage period of the satellite, the timeliness of a single flight observation mission is ...

AI Technical Summary

Problems solved by technology

Compared with spaceborne SAR, airborne SAR has improved platform flexibility and observation timeliness, and reduced use cost and system complexity. However, the driving, operation, and Factors such as use, maintenance, airspace approval, and weather conditions also increase the acquisition cost of SAR images and reduce the deployment flexibility of SAR

Therefore, traditional airborne SAR remote sensing image acquisition methods cannot meet the requirements of low cost, high flexibility, and simple use in some industry applications.

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