Free space laser communication receiving device

Abstract

The invention provides a free space laser communication receiving device which comprises a base, a framework, a plurality of reflectors, a plurality of detectors, a signal processor and a main control computer. The framework is connected with the base, the outer contour of the framework is hemispherical, the reflectors are arranged on the framework in a spherical array mode, the receiving faces of the reflectors are concave paraboloids and used for reflecting laser signals, the detectors correspond to the reflectors one to one, each detector is located at the focus of the corresponding reflector, to receive laser signals reflected by the reflector and convert the laser signals into corresponding electric signals; and the signal processor is connected with each detector and is used for processing the electric signals converted by the detectors and sending the electric signals to the main control computer. The receiving device does not need to be provided with a two-dimensional moving platform, the weight is small, and meanwhile energy consumption is saved. The receiving device does not comprise moving parts, is more stable in structure, easier in system integration, smaller in size and higher in signal-to-noise ratio compared with a transmission-type receiving device.

Description

technical field [0001] The invention relates to the technical field of laser communication, in particular to a free space laser communication receiving device. Background technique [0002] Space free laser communication has become a relatively mature means of space communication. Space laser communication is gradually used in inter-satellite communication links, interstellar communication links, satellite-ground communication links and some ground wireless communication links. In various free-space laser communication systems, the beam capture, tracking, and targeting system (ATP) is its key component. The main function of the ATP system is to maintain the precise aiming of the two communication terminals in real time to ensure that the optical axis of the two-way laser emitting terminal remains Approximate coincidence. [0003] The ATP system is directly related to the reliability of the free space laser communication link, and the failure of the ATP system means the fail...

AI Technical Summary

Problems solved by technology

The ATP system is a complex opto-mechanical system. Since the terminal requires at least a combination of high-precision two-axis motor platforms, its overall weight introduces unavoidable weight and power consumption loads. At the same time, its mechanical components are always in dynamic adjustment during the operation of the ATP system. During the process, there will be adverse effects such as heat dissipation and vibration

Images