Broadband signal array system with parallel structure

Abstract

The invention relates to a broadband signal arraying system with a parallel structure, and the system comprises a parallel conversion module which is used for converting a serial signal collected by each antenna into a parallel signal; a digital down-conversion module which is used for performing down-conversion on the parallel signal; a parallel filtering module which is used for carrying out band-pass filtering on the parallel signal subjected to down-conversion; a frequency difference and time difference adjustment module which is used for performing frequency and time difference adjustment on the parallel signal subjected to band-pass filtering to complete frequency and time delay alignment; a SUMPLE algorithm module which is used for carrying out weighted summation on the parallel signal subjected to frequency and time delay adjustment through a SUMPLE algorithm to obtain a synthetic signal; and a digital up-conversion module which is used for carrying out up-conversion on the synthesized signal to enable the synthesized signal to have the same central frequency position as the received signal. A sampling signal received by each antenna is subjected to serial-parallel conversion, and each module in a traditional array synthesis algorithm structure is subjected to parallel design, so that the clock frequency of serial processing of the system is effectively reduced.

Description

technical field [0001] The invention relates to a broadband signal array system with a parallel structure, which belongs to the technical field of communication signal processing. Background technique [0002] In deep space exploration, probes need to send wireless signals back to Earth from distant space to establish a communication link between the probe and the measurement and control station. With the development of the detection mission, the demand for data transmission rate is getting higher and higher, and because the free space transmission loss of the signal is inversely proportional to the square of the distance, as the detection distance increases, the signal received on the ground is usually very weak , even completely drowned in complex radio noise. Reliably recovering weak deep space signals has become a problem that must be solved in deep space exploration missions. [0003] The traditional techniques for improving the signal-to-noise ratio of received signa...

AI Technical Summary

Problems solved by technology

If the traditional antenna array algorithm is used, the same phase weighting factor is used for phase compensation at all frequencies, which will lead to signal-to-noise loss of the synthesized signal

These traditional antenna array synthesis algorithms use a serial structure, which is limited by the hardware clock frequency, and the efficiency of sampling and data processing is relatively low

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