Large-capacity inbound signal acquisition and processing method and system

Abstract

The invention discloses a large-capacity inbound signal capture and processing method, device and system, including a signal acquisition unit, a 10G switch, a signal capture unit and a signal processing unit set composed of a plurality of signal processing units; The baseband signal is sent to the signal acquisition unit, and the signal acquisition unit realizes the inbound signal capture, and then the signal acquisition unit schedules the signal processing unit set according to the principle of "polling scheduling" and the real-time feedback of the working status of the signal processing unit, and based on the signal The processing unit uniformly designs interchangeable hardware devices, and regards all signal processing units as a common resource, which is shared by all subsystems to achieve unified allocation of system resources and task load balancing, so that the distributed signal processing unit equipment forms a " Cluster" to realize parallel processing of multi-channel signals.

Description

technical field [0001] The invention relates to a satellite mobile communication system, in particular to a large-capacity inbound signal acquisition and processing system and method for the ground segment of the satellite mobile communication system of the RDSS (Radio Determination Satellite Service) system. Background technique [0002] The RDSS system needs to complete the synchronous capture of inbound signals, signal despreading and decoding, and finally restore the original user information. [0003] The reception of the traditional inbound signal of the ground segment of the RDSS system satellite mobile communication system adopts the processing method of analog signal distribution, and the structure is as follows: figure 1 shown. The intermediate frequency distribution unit outputs the inbound intermediate frequency signal to the signal acquisition unit and the signal processing unit at the same time. The signal acquisition unit samples the analog intermediate freq...

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Problems solved by technology

[0004] The traditional RDSS system satellite mobile communication system captures and processes inbound signals by using underlying hardware signals to communicate between units, and the wiring network is cumbersome, such as figure 1 shown

For example, each signal processing unit needs to be connected to the signal line transmitting the inbound intermediate frequency analog signal, and also to be connected to the control line transmitting the synchronization information of the inbound user, resulting in many types and quantities of system cables and poor reliability.

At the same time, due to the characteristics of large batches and short bursts of the inbound signals of the satellite mobile communication system, when the capacity of the receiving system is insufficient and it is necessary to increase the signal processing unit, the wiring network must be re-deployed, and parameters such as system delay and signal level must be recalculated to facilitate system expansion. poor sex

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