【摘要】：隨著空間探測技術(shù)的快速發(fā)展，星載設(shè)備處理的數(shù)據(jù)量迅速增長，對星載設(shè)備的數(shù)據(jù)傳輸總線提出了更高的要求。SpaceWire總線是一種更好滿足現(xiàn)代星上設(shè)備間高速數(shù)據(jù)傳輸需求的傳輸標(biāo)準(zhǔn)，目前已應(yīng)用在多個(gè)航天任務(wù)。在追求網(wǎng)絡(luò)中數(shù)據(jù)傳輸高速性和可靠性的同時(shí)，，快速集成、動(dòng)態(tài)配置網(wǎng)絡(luò)中的航天設(shè)備對于縮短航天器的研發(fā)周期、降低研制成本等具有重要意義。 最近各個(gè)國家航天科研人員開始討論將即插即用技術(shù)應(yīng)用引入到航天領(lǐng)域，特別是SpaceWire網(wǎng)絡(luò)中。目前為止，國際上沒有頒布對特定設(shè)備實(shí)現(xiàn)即插即用功能的SpaceWire即插即用標(biāo)準(zhǔn)協(xié)議，國內(nèi)對于SpaceWire總線即插即用技術(shù)的研究和開發(fā)還不多見。 本文基于對SpaceWire協(xié)議棧中標(biāo)準(zhǔn)協(xié)議的研究分析，以在SpaceWire標(biāo)準(zhǔn)協(xié)議應(yīng)用層擴(kuò)展即插即用功能為出發(fā)點(diǎn)，給出了一種基于“握手識(shí)別配置”模式的SpaceWire即插即用的非標(biāo)準(zhǔn)協(xié)議與實(shí)現(xiàn)方案。以SpaceWire即插即用的非標(biāo)準(zhǔn)協(xié)議為基礎(chǔ)，本文搭建了由模擬綜合管理設(shè)備、模擬相機(jī)設(shè)備、模擬數(shù)據(jù)傳輸設(shè)備、數(shù)據(jù)監(jiān)控平臺(tái)和數(shù)據(jù)顯示平臺(tái)組成的基于SpaceWire總線即插即用圖像傳輸系統(tǒng)，通過Mjpg-streamer視頻服務(wù)器技術(shù)和SpaceWire即插即用實(shí)現(xiàn)方案設(shè)計(jì)了系統(tǒng)中的管控模塊、SpaceWire數(shù)據(jù)輸入模塊和SpaceWire數(shù)據(jù)輸出模塊。在數(shù)據(jù)顯示的圖像處理模塊中，本課題對暗原色先驗(yàn)去霧算法進(jìn)行分析和改進(jìn)，利用像素差值分割圖像中不滿足暗原色先驗(yàn)的天空區(qū)域，并根據(jù)圖像峰值信噪比與視覺效果調(diào)節(jié)天空區(qū)域透射率，在一定程度上消除這些區(qū)域產(chǎn)生的色彩失真。最終系統(tǒng)在客戶端操作界面演示了系統(tǒng)中SpaceWire網(wǎng)絡(luò)設(shè)備的圖像采集、傳輸和即插即用功能，在數(shù)據(jù)顯示平臺(tái)的圖像處理模塊增強(qiáng)了對采集圖像去霧處理功能。
[Abstract]:With the rapid development of space exploration technology, the amount of data processed by space-borne equipment is growing rapidly. SpaceWire bus is a better standard to meet the requirement of high-speed data transmission between modern satellite devices, which has been applied in many spaceflight missions. While pursuing the high speed and reliability of data transmission in the network, it is of great significance to integrate rapidly and dynamically configure the space equipment in the network to shorten the research and development cycle of spacecraft and reduce the development cost. Recently, spaceflight researchers in various countries have begun to discuss the application of plug and play technology in aerospace, especially in SpaceWire networks. Up to now, there is no standard protocol of SpaceWire plug and play for special devices in the world. The research and development of SpaceWire plug and play technology is rare in China. Based on the research and analysis of the standard protocols in the SpaceWire protocol stack, this paper starts with extending the plug and play function in the application layer of the SpaceWire standard protocol. This paper presents a non-standard protocol and implementation scheme of SpaceWire plug and play based on handshake recognition configuration mode. Based on the non-standard protocol of SpaceWire plug and play, this paper builds the analog integrated management equipment, the analog camera equipment, the analog data transmission equipment. Data monitoring platform and data display platform based on SpaceWire bus plug and play image transmission system, through Mjpg-streamer video server technology and SpaceWire plug and play scheme to design the control module of the system. SpaceWire data input module and SpaceWire data output module. In the image processing module of data display, this paper analyzes and improves the priori de-fogging algorithm of dark primary color, and uses pixel difference to segment the sky region of the image which does not satisfy the prior dark color priori. According to the peak signal to noise ratio and visual effect, the transmittance of sky region is adjusted to eliminate the color distortion in these regions to a certain extent. Finally, the system demonstrates the functions of image acquisition, transmission, plug and play of SpaceWire network equipment in the client interface, and enhances the function of image de-fogging in the image processing module of the data display platform.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP336;TP391.41

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