A high-speed non-coherent communication ranging device and method

Abstract

The invention discloses a high-speed non-coherent communication ranging device and method, including a transmitting unit, a receiving unit and a clock phase acquisition module; the transmitting unit includes a sending processing module, an optical modulation module and an optical transmitter, and the sending processing module is used for sending data After framing, encoding, and carrier loading processing, the optical modulation module converts it into laser light and emits it through the optical transmitter; the receiving unit includes a receiving processing module, an optical demodulator and an optical receiver, and the receiving processing module is used to receive the output of the optical demodulator. Data, demodulates the received data, restores the required received data after decoding and decoding, and obtains the recovered clock information from the demodulated ADC dynamic sampling clock signal; the clock phase acquisition module, the clock phase acquisition module and the transmission processing module connected, and the clock phase acquisition module is connected to the receiving processing module. The invention can simultaneously realize high-speed communication and high-precision ranging device, and meanwhile, the device has small volume and low power consumption.

Description

technical field [0001] The invention relates to the field of laser communication ranging, in particular to a high-speed non-coherent communication ranging device and method. Background technique [0002] The existing commonly used ranging methods include side tone ranging, pseudo code ranging, sound code mixed ranging, information frame ranging, etc. Generally, the ranging data is obtained by measuring the two-way signal transmission delay. The information frame ranging method belongs to non-coherent ranging and can be applied to two-way ranging and time synchronization (Two-Way Ranging and Time Transmit, TWRTT) technology; compared with other ranging methods, this method can realize high-speed communication (Hundreds of Mbps to several Gbps level) to complete ranging at the same time, especially suitable for satellite-ground and inter-satellite high-speed communication links. The existing information frame ranging method is mainly based on a fixed local clock. In the exist...

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Problems solved by technology

The existing information frame ranging method is mainly based on a fixed local clock. In the existing information frame ranging, a special ranging frame is set in the communication data frame, and the distance is measured by comparing the local fixed clock with the recovered clock. The clock is tens of In order to complete such a large number of clock comparisons, it takes a lot of internal system resources. When the system communication rate is increased to the order of magnitude (hundreds of Mbps to several Gbps), the local clock signal recovery at the receiving end will be more The logical computing resources cannot meet the requirements of normal communication and high-precision ranging in the high-speed range

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