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Design of Image Scout Sensor for Three-dimentional Monitoring in Battlefield

Author: HuBing
Tutor: LuoWuSheng
School: National University of Defense Science and Technology
Course: Instrument Science and Technology
Keywords: Wireless multimedia sensor networks Image reconnaissance sensor RSA encryption algorithm RS error correction coding algorithm Nrf2401 Biorthogonal lapped transform
CLC: TN919.8
Type: Master's thesis
Year: 2010
Downloads: 92
Quote: 1
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Abstract


Wireless multimedia sensor networks (WMSNs) is developed on the basis of the traditional wireless sensor networks (WSNs) with a new type of sensor network for audio, video, images and other multimedia information perception. With only a simple environmental data acquisition functions compared to traditional wireless sensor networks, wireless multimedia sensor networks can achieve fine-grained, accurate information for environmental monitoring, has a very broad application prospects in the military. Based on the understanding of the broad application prospects of the future of wireless multimedia sensor networks, especially taking into account the huge value in the three-dimensional monitoring of the battlefield environment, the papers in the National Natural Science Foundation of China \(No.60872151) funded by around wireless multimedia sensor network node that image reconnaissance sensor of the key technologies to conduct research, mainly to complete the following aspects: 1, a comprehensive overview of the advantages of the multimedia sensor networks to introduce the reconnaissance sensors shortcomings image and its military applications, summed up the development in the world of multimedia sensor nodes. 2, the RSA RS algorithm, the image information in order to achieve safe and reliable transmission. Security, select the encryption algorithm RSA, described in principle, to study the fast algorithm;, select the RS algorithm, its Matlab simulation and analysis and error correction algorithm. The last two algorithms when used in conjunction with Matlab simulation analysis sequence before and after their use. The results show that the practical application, the first RSA encryption RS coding is not only small amount of calculation and the error rate is also lower. Explore wireless transmission method suitable for sensor networks, analyze and then compare them. Selected based on nRF2401 wireless transmission, and nRF2401-depth research and experimentation. The results show that the wireless module actual transmission speed of 156kbps transmission distance of 32 meters, and academic analysis, suitable for image reconnaissance sensor. 4, which describes the basic principle of the dual the overlapping orthogonal transform (LBT) and the LBT binary integer algorithm and fixed-point implementation of the algorithm. Analysis and comparison of fixed-point LBT and binary integer arithmetic, determine the fixed-point LBT is more suitable for wireless multimedia sensor networks. Designated LBT DSP parallel implementation of the method, to fully consider ranks transform the structural features, design task allocation, specific simulation. The results show that the the DSP parallel implementation method a better solution to a real-time image compression in wireless multimedia sensor networks. 5, the design of an image reconnaissance sensors. The sensor OV9650 capture image information TMS320C6204 DSP chip the processor, Flash chip HY29LV160 the system code memory, SRAM chip CY7C1049DV33 data stream cache for information transmission, wireless transmission chip nRF2401.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication
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