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T / R switch received radiation into the optical mixer, the proceeds of the beat signal by the imaging system focused onto the photosensitive detector, which the light signals into electrical signals from the background source by the high-pass filter all filter out low frequency components and the DC signal induced by the local oscillator. Measurement information contained in the final high-frequency component detected by the signal and data processing systems. Bistable system difference is that contains two sets of telescopes and optical scanning components, T / R switch is naturally no longer needed, and the rest with a single stable system. green laser pointer might be damaged during shipping process.
Airborne LIDAR measurement system composed of airborne laser scanning system to measure the composition of the platform, the laser system, attitude measurement, and navigation systems, digital cameras, computers and software from the sky. The aerial survey platform aerial survey platform is air laser scanning system operating space vector and operating platforms, helicopters or other aircraft, used to load a variety of instrumentation and operator of the aviation laser scanning system. Attitude measurement and navigation system font selection: GPS receiver, IMU inertial guidance instrument, navigation computers constitute the attitude measurement and navigation system. GPS receiver with differential positioning techniques to determine the coordinates of the platform. green laser pointer has gain the support fromgreen laser pointer company.
IMU inertial guidance to measure the attitude of the Airlines flying platform for the correction on the angle of the laser beam and the ground image correction. GPS receivers for aircraft navigation, aircraft is now the state should use a graphic way to the pilots and system operators, aircraft distance from the starting point for the end of the task routes, route lateral deviation, flight speed, route deviation from the direction, route position in the survey area. The system should be able to deal with the area measurements to be able to handle the ribbon measurement. 3 digital laser scanner, digital laser scanner is a core part of this system, it is mainly used to measure surface features landforms three-dimensional coordinate information. The width of the aerial photos digital camera digital camera should be adjusted to match with the width of the laser scanning. Here is the product characteristics of green laser pointer.
Aerial photos been corrected, the mosaic can form a color orthorectified digital images. Data processing software, laser scanning system to obtain a very large amount of data by a special professional software. Airborne laser radar measurement systems, data acquisition and processing (a) aircraft flying acquisition of laser scanning data and digital images. In front of the aircraft flying to formulate a flight plan. Airlines flying plan should be divided into strips to determine the flight altitude, speed, laser pulse frequency, flight width, laser mirror rotation speed, the orientation elements and the positioning of the digital camera, camera shooting time interval, and the strips begin and end coordinates flight operations, flight navigation control software-assisted and other navigation coordinate input navigation computer. green laser pointer is of the moisture resistance.
The placement of the GPS receiver. In order to ensure the accuracy of three-dimensional coordinate data of the aircraft flight time, the ground laid a certain number of GPS reference stations along the route, while the GPS rover placed on the plane. 3. Laser scanning. Pre-set the swing direction of the scanning mirror and swing angle when the aircraft is in flight, the infrared laser generator to keep a laser scanning mirror, through the movement of aircraft and the movement of the scanning mirror reflection of the laser beam hit the ground and cover the survey area, when the laser beam reaches the ground, or encounter other obstacles reflected back and received by a photoelectric sensor receiver and converted into electrical signals. Time interval according to the laser transmitter to the receiver can accurately measure the distance from the sensor to ground. The parameter setting of green laser pointer is reasonable.