Three-dimensional polarization imaging lidar remote sensor

Abstract

The invention discloses a three dimensional polarization image laser radar remote sensor. The invention comprises a light path system, a device for the generation of polarization light and the reception of dispersion light, the generation of three dimensional data and a processing method for three dimensional data. The invention is characterized in that the light path system is the same optical system which is composed by a range finder and a device for the generation, emission and detection of the polarization light. The device for the generation, emission and detection of the polarization light comprises a laser instrument, a beam splitter, a double frequency crystal, a plurality of lenses, a code disc, a scan motor, a scanning mirror, a telescope, a polarizer, a wave plate, an echo ranging reception device, a color separation filter, a CCD and a computer. The generation device and the method for target three dimensional surface data comprises a distance measurement device and the method for distance measurement data generation, location data generation and remote sensor attitude data generation. The processing method for polarization image data and three dimensional surface data comprises the processing method for laser distance measurement data, location data and attitude data. The invention can obtain the three dimensional image of the detected target with polarization information.

Description

【Technical field】 [0001] The present invention is a three-dimensional polarization imaging lidar remote sensor, which mainly uses laser polarization imaging measurement technology, laser ranging technology, GPS positioning measurement technology, attitude measurement technology and data integration and processing technology to combine into an organic whole to realize three-dimensional polarization Imaging lidar remote sensor. 【Background technique】 [0002] At present, there are a variety of lidar remote sensing technologies, such as time-of-flight coding based on laser pulses, laser echo intensity coding, and laser echo waveform coding, which are applied to atmospheric remote sensing, hydrological remote sensing, surface feature research, and trace gas detection. Single-wavelength laser radar remote sensing technology. In recent years, research on polarization imaging laser radar remote sensing technology has been carried out internationally to expand traditional laser rada...

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Problems solved by technology

[0002] At present, there are a variety of lidar remote sensing technologies, such as time-of-flight coding based on laser pulses, laser echo intensity coding, and laser echo waveform coding, which are applied to atmospheric remote sensing, hydrological remote sensing, surface feature research, and trace gas detection. Single-wavelength laser radar remote sensing technology. In recent years, research on polarization imaging laser radar remote sensing technology has been carried out internationally to expand traditional laser radar remote sensing technology in some applications of vegetation classification remote sensing, crop yield evaluation remote sensing, and military remote sensing. In particular, in recent years, the newly developed polarization imaging laser radar remote sensor in the world has received much attention. The most advanced technology is the dual-wavelength polarization imaging remote sensor in the United States, but the remote sensor system is designed with refraction and transmission optical systems. method, not only has the disadvantages of complex system, large volume, heavy weight, complicated process and difficult to manufacture, but also requires two lasers, large loss of light energy in the refraction and projection optical system, and is difficult for aerospace long-distance remote sensing

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