Short-wave multi-channel parallel direct acquisition and receiving system

Abstract

The invention relates to a short-wave multi-channel parallel direct acquisition and receiving system. The system comprises a power supply unit, a radio-frequency signal processing unit and a digital signal processing unit, the power supply unit supplies power to the system; wherein the radio frequency signal processing unit comprises an input protection circuit, a 30MHz low-pass filter, an eight-path preselection multiplexer filter, an eight-path numerical control attenuator, an eight-path front high-linearity low-noise amplifier and a clock circuit which are connected in sequence; the digitalsignal processing unit comprises eight ADC sampling circuits, an FPGA circuit, a DSP circuit and an audio line output circuit which are connected in sequence, the eight ADC sampling circuits are connected with the eight front high-linearity low-noise amplifiers in a one-to-one correspondence mode, the DSP circuit is connected with a network interface, and the DSP circuit communicates with an upper computer. According to the invention, the advantage that a short-wave full-band signal direct acquisition and receiving system is completely wide-open can be fully utilized, and the problem of insufficient anti-interference performance can be solved.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a short-wave multi-channel parallel direct acquisition and reception system. Background technique [0002] In the field of shortwave signal technology reconnaissance, the current mainstream trend of development is to realize the reconnaissance and interception of shortwave signals in all directions, all frequency bands, all time domains, and all elements. Traditionally, the main hardware platform for the reconnaissance and interception of shortwave signals is the shortwave superheterodyne receiver. Because of the frequency conversion unit, the circuit structure is relatively complicated, and it cannot meet the needs of full-band real-time coverage reception, and is not suitable for broadband Signal reconnaissance site. The shortwave signal direct acquisition and reception technology based on the software radio architecture can realize instantaneous bandwidth real-...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in related technologies, the present invention proposes a shortwave multi-channel parallel direct acquisition and reception system, based on the software radio architecture technology, which can not only make full use of the advantages of full wide openness of the shortwave full-band signal direct acquisition and reception system, but also solve the problem of The problem of insufficient anti-interference

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