Broadband multichannel digital correlation receiver and reception method

Abstract

Provided is a broadband multichannel digital correlation receiver. The broadband multichannel digital correlation receiver comprises a digital acquisition module used for inputting an intermediate-frequency analog broadband signal, performing poly-phase filtering channelization processing and quantification processing on the intermediate-frequency analog broadband signal, and obtaining a quantified orthogonal signal; a correlation processing module connected with the digital acquisition module and used for receiving the quantified orthogonal signal, performing multiple correlation operation on the quantified orthogonal signal, and obtaining a multiple correlation result; and a synchronous control module connected with the digital acquisition module and the correlation processing module to perform control and used for receiving a state signal and the multiple correlation result of the digital acquisition module and the correlation processing module and packing the received state signal and the multiple correlation result for output. According to the receiver, poly-phase filtering channelization processing of the intermediate-frequency analog broadband signal is performed by employing a poly-phase filter bank and a cascaded half-band filter bank so that the bandwidth and the central frequency point of a baseband signal required to be observed can be flexibly selected, and the influence brought by radio interference of an external environment is reduced.

Description

technical field [0001] The invention relates to the technical field of radio observation, and more specifically relates to a broadband multi-channel digital correlation receiver and a receiving method. Background technique [0002] Observation in the radio band is a very important means to study celestial bodies (including the sun, the earth, planets and celestial bodies outside the solar system), called radio observation. Because radio radiation reflects important properties and states of radiators. Radio waves in different bands reflect different characteristics and states, and their radiation frequencies are closely related to environmental parameters. Therefore, according to the observation and research of radio radiation at a certain frequency, physical information such as electron density or magnetic field in the source region can be deduced. [0003] In the field of solar physics, radio observations can provide information about the dynamic behavior of plasma and hi...

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Problems solved by technology

[0008] 2. Since NoRH and NRH use 1-bit quantization before the complex correlation operation, the sensitivity of the correlation output is not high, and it is only 63.7% of the correlation sensitivity without quantization under the condition of satisfying the Nyquist sampling rate

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