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Ma L.,Shanghai JiaoTong University | Zhang X.,Shanghai JiaoTong University | Wang K.,China National Aeronautical Electronic Radio Research Institute | Xu T.,Tongji University
Research Journal of Applied Sciences, Engineering and Technology | Year: 2013

The traditional Automatic Test Equipment (ATE) systems are insufficient to cope with the challenges of testing more and more complex avionics systems. In this study, we propose a general method for module automatic testing in the avionics test platform based on PXI bus. We apply virtual instrument technology to realize the automatic testing and the fault reporting of signal performance. Taking the avionics bus ARINC429 as an example, we introduce the architecture of automatic test system as well as the implementation of algorithms in Lab VIEW. The comprehensive experiments show the proposed method can effectively accomplish the automatic testing and fault reporting of signal performance. It greatly improves the generality and reliability of ATE in avionics systems. © Maxwell Scientific Organization, 2013. Source

Wang K.,Tongji University | Wang K.,China National Aeronautical Electronic Radio Research Institute | Ma L.,Shanghai JiaoTong University | Shu W.-Q.,Tongji University | Xu T.,Tongji University
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2011

Coped with the trend of digital design of the image processing module in avionics system, a complete real-time simulation platform for airborne image processing was established. Based on ESL design methodology, the platform abstracted key algorithm module in video processing system as IP core using Handel-C language, made simulation and validation at system level, and realized via FPGA. The difficulty of poor real-time capability, co-design and verification was addressed, which could not be handled only by software algorithm implementation. As case study, integrated cockpit display and enhanced vision subsystems were implemented on the platform to verify real-time feature. Source

Wang K.,China National Aeronautical Electronic Radio Research Institute | Wang K.,Shanghai JiaoTong University | Huang D.,China National Aeronautical Electronic Radio Research Institute | Ma L.,China National Aeronautical Electronic Radio Research Institute | And 2 more authors.
High Technology Letters | Year: 2014

A fast motion estimation algorithm for variable block-size using the "line scan and block merge procedure" is proposed for airborne image compression modules. Full hardware implementation via FPGA is discussed in detail. The proposed pipelined architecture based on the line scan algorithm is capable of calculating the required 41 motion vectors of various size blocks supported by H.264 within a 16 × 16 block in parallel. An adaptive rate distortion cost function is used for various size block decision. The motion vectors of adjacent small blocks are merged to predict the motion vectors of larger blocks for reducing computation. Experimental results show that our proposed method has lower computational complexity than full search algorithm with slight quality decrease and little bit rate increase. Due to the high real-time processing speed it can be easily realized in hardware. Copyright © by HIGH TECHNOLOGY LETTERS PRESS Source

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