Implement Integral Control Software Of Uncompression Server In Ground Testing System

Satellite cameras take images and generate image information detection data. Data are lossless compressed by data compression unit on satellite and then transferred to ground through satellite-ground link. After received by control device on ground, compressed data stream will be relayed to uncompression device to get uncompressed and image processed. This the working process of testing system on the ground. The uncompression device is part of the ground control devices and is used to all kinds of testing and experiment after compression unit loading for satellite?This paper introduces the integral control software of uncompression server in uncompression device. and details the design and implementation of uncompression server software. We experiment according to the system performance requirement and evaluate the results. We first introduce the background of uncompression device. Then we describe the synergic architecture of uncompression device software and hardware. We articulate the role and functions of uncompression server software in the whole uncompression device. Then we give an outline design of uncompression server software and have an understanding of the module partition and job distribution to modules of uncompression server software. The following of the paper will detail the designs and implementations of uncompression server software. We will provide multiple software construction solutions. We complete the code with techniques like multi-thread programming, network programming, QT programming, string match, ring buffer, etc. According to the performance requirement, we test and evaluate the consumed time of the uncompression server. With the results, we give feedback and improve the design of the software continuously to optimize the function and performance of uncompression server software.The integral control software of uncompression server designed and implemented in this server provides user interface, interacts with other servers in Testing system on the ground,controls data stream, processes images and completes the uncompression by coordinating with uncompression hardware card. By experiment, system latency andthroughput meet the performance requirement.