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Design and application of wireless signal strength measurement system on the near-ground

KONG Xiang-shan(孔祥善)1, SHI Xin-lei(师新蕾)2, WANG Dai-hua(王代华)3, ZHANG Zhi-jie(张志杰)3

 

(1. North Automatic Control Technology Institute, China North Industries Group Corporation, Taiyuan 030006, China;2. Aero-instrument Co. Ltd., Aviation Industry Corporation of China, Taiyuan 030006, China;3. Key Laboratory of Instrumentation Science and Dynamic Measurement (North University of China),Ministry of Education, Taiyuan 030051, China)

 

Abstract:The wireless communication system’s performance is greatly constrained by the wireless channel characteristics, especially in some specific environment. Therefore, signal transmission will be greatly impacted even if not in a complicated topography. Testing results show that it is hardly to characterize the radio propagation properties for the antenna installed on the ground. In order to ensure a successful communication, the radio frequency(RF) wireless signal intensity monitor system was designed. We can get the wireless link transmission loss through measuring signal strength from received node. The test shows that the near-ground wireless signal propagation characteristics still can be characterized by the log distance propagation loss model. These results will conduce to studying the transmission characteristic of Near-Earth wireless signals and will predict the coverage of the earth's surface wireless sensor network.

 

Key words:near-ground wireless signal transmission; received signal strength test; radio frequency(RF) wireless channel modeling

 

CLD number: TN92 Document code: A

 

Article ID: 1674-8042(2012)03-0205-06doi: 10.3969/j.issn.1674-8042.2012.03.001

 

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