Broadband signal receiving method and device based on photon channelization sampling

Abstract

According to the device, the design content is divided into a radio frequency link front end and a radio frequency link rear end, the radio frequency link front end mainly completes electro-optical conversion, channelization, photoelectric down-conversion and analog-to-digital conversion, and the channelization process is divided into optical domain coarse filtering, electric domain filtering and digital domain fine filtering to design a receiving scheme. At the rear end of a radio frequency link, frequency spectrum splicing and signal reconstruction are carried out on digital signals obtained by sampling of an oscilloscope, and single channel estimation and compensation, signal splicing and overall compensation of reconstructed signals are carried out in sequence. Therefore, the device can be suitable for parallel processing of broadband agile signals and real-time monitoring of large-bandwidth, multi-frequency-point and high-precision signals.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a broadband signal receiving method and device based on photon channelized sampling. Background technique [0002] In today's world, mass production and high-speed dissemination of civilian information, massive data to be processed put forward high requirements for signal processing at the receiving end; military wars have gradually increased the demand for real-time reconnaissance and warning, and the precise perception and Real-time detection becomes a core enabling technology for many applications. [0003] Optical links have the advantages of low loss, fast speed, large instantaneous bandwidth, and strong anti-electromagnetic interference capability. Channelized reception overcomes the electronic bottleneck of ultra-wideband signal analog processing. The channelized reception method of broadband radio frequency signals based on microwave photonics is Modu...

AI Technical Summary

Problems solved by technology

[0005] The advantage of broadband radio frequency channelization reception technology based on a single optical frequency comb is that only a single comb-shaped optical domain filter is required, and the structure is relatively simple; Each transmission peak must also have a flat-topped and steep-sided spectral response; limited by the response performance of optical devices, this method can generally only be used in instantaneous spectrum analysis, and it is difficult to apply it to broadband signal reception

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