Broadband signal acquisition and processing system

Abstract

The invention provides a broadband signal acquisition and processing system. A signal frequency conversion module of the broadband signal acquisition and processing system simultaneously receives and processes four paths of input signals and then outputs the signals to a signal acquisition module; a signal acquisition module receives signals output by a signal frequency conversion module, carries out digital down-conversion and signalization on the signals, and outputs processed data to a control module; the control module is used for storing the received signals and controlling each module; a clock management module performs clock control and clock generation on a broadband signal acquisition and processing system, and provides a sampling clock for a signal acquisition module; the spectrum analysis module acquires signals acquired by the signal acquisition module and performs spectrum analysis processing on the received signals, and four-channel signal acquisition is realized through the signal acquisition module, so that the broadband signal acquisition and processing system can directly receive L-band signals from an antenna and perform corresponding channelization processing and storage. Future calling analysis is facilitated, and additional equipment is not needed.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and more specifically relates to a broadband signal acquisition and processing system. Background technique [0002] At present, in the field of satellite communications, the demand for simultaneous acquisition, processing, and spectrum analysis of multiple signals is increasingly strong, and electromagnetic wave signal acquisition is the initial stage of signal processing and analysis. At present, most acquisition equipment architectures use multiple ADCs to achieve multi-channel acquisition. The real-time processing of information puts forward higher requirements for sampling rate and synchronization between signals. At the same time, the diversity of signal frequency band bandwidth requires configurable sampling frequency points. [0003] The acquisition board, the processing board, the storage board and the host board are respectively interconnected through the backplane to realize ...

AI Technical Summary

Problems solved by technology

[0004] Although it is more flexible to connect multiple boards through the backplane, too many boards increase the complexity of the circuit, and there are only two input channels, and only two signals can be collected at the same time. The signal frequency is 140MHz, which is an intermediate frequency signal and requires an external The down-converter can collect the input section signal, further increasing the complexity of the circuit

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