Multichannel high speed remote sensing data acquiring and processing device

Abstract

The invention relates to multi-channel high-speed remote sensing data acquiring and processing equipment. Multi-channel satellite remote sensing data enter a frame synchronous unit after series-parallel conversion respectively. The frame synchronous unit captures a data frame head of the remote sensing data, performs frame synchronization, sends the data after synchronization to a data format unit and transforms the data according to the prescribed format. A priority determination unit performs acquisition and dispatch on the data based on the set priority order, sends the formatted data to a data acquisition unit for data acquisition and frame head finishing in turn, and then sends the data to a buffer zone. A data processing unit comprises a host processor and a plurality of coprocessors, wherein the host processor receives interrupt signals from the baffle zone, reads data from the baffle zone; and according to task complexity, data read by the baffle zone are processed by the host processor directly, or by dispatched coprocessors in a flowing mode or in a concurrent mode. The equipment has high integrity, low coupling and good reliability, is used for solving bottle-neck problems in high-speed transmission, and realizes acquisition and processing of high-speed remote sensing data.

Description

Technical field [0001] The invention relates to a data acquisition device, in particular to a data acquisition device used for multi-channel acquisition and real-time processing of downlink data of aerospace remote sensing satellites. Background technique [0002] With the continuous development of aerospace remote sensing technology at home and abroad, more and more remote sensing satellites are launched by countries all over the world, and the baseband data code rate also ranges from hundreds of KHz to hundreds of MHz, even reaching the GHz level. In addition, the data format of satellites varies according to different countries and applications. In this way, the downlink data acquisition system of remote sensing satellites is required to consider not only the acquisition speed, but also the data format of the satellite. Early data acquisition equipment can only adapt to a single satellite model, and basically does not have data processing capabilities. The most disadvantageous...

AI Technical Summary

Problems solved by technology

It consumes manpower and material resources to a large extent, and at the same time, in order to maintain a large number of different types of data acquisition equipment, the later cost invested is even more alarming

On the other hand, the reliability of the system is also seriously reduced due to the huge number of devices and the complexity of the connection

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