Data caching and sending device and method of network receiver

Abstract

A data caching and sending device of a network receiver comprises a cache module formed by an FPGA (field programmable gate array) and a DDR3 storage, and a TCP (transmission control protocol) communication module formed by an on-chip system and in-machine software; the FPGA is connected with the DDR3 storage by an interface circuit and is connected with the on-chip system by an external system bus; the on-chip system is provided with an Ethernet interface and can send data to a network. The FPGA chip of the receiver is connected with the DDR3 storage in a hanging mode, the data can be directly written into the DDR3 storage by the FPGA after being subjected to medium frequency treatment, so the receiver can collect at high speed continuously. The FPGA provides an FIFO (first in first out) interface for the on-chip system to support asynchronous data transfer, a data channel in the TCP communication module is specially adopted for data transmission, and the aim that the data flow is not interrupted in the whole transmission process is ensured.

Description

technical field [0001] The invention belongs to the field of radio monitoring, in particular to a data buffering and sending device of a grid receiver and a working method of the device. Background technique [0002] Gridding is an important development direction of radio monitoring. The gridded receiver is no longer an isolated single-station operation point, but serves as a sensor to provide spectrum sensing capabilities for the monitoring system. Each receiver is connected to each other through the network, and the measured data are sent to the remote server for comparison, fusion and processing. Since the grid requires a large number of receivers to be deployed in the monitoring area, the receivers must be miniaturized, low-cost and easy to install, and desktop receivers are not considered. In addition, compared with traditional receivers, meshing places more emphasis on the receiver's local cache and network transmission capabilities for data. In a gridded radio monit...

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Problems solved by technology

[0005] The purpose of the present invention is aimed at the lack of high-speed and large-capacity cache function of the existing grid receiver, which cannot realize high-speed acquisition, and the FPGA must wait for the CPU to finish reading the data before performing subsequent processing, and the data acquisition is not continuous. Data caching and sending device and method for grid receiver

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