Performance Analyses for Radio Frequency-Hopping System with Multiple Influence Factors：A Case Study

• Main Authors: Zhi-Lian Kang, 康志連
• Other Authors: Chao-Hung Chen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/14083891410645120968

碩士 === 義守大學 === 電子工程學系碩士班 === 99 === For the military demand of our country, it is necessary to construct a small army yet with concentrated, strong, and skillful. Consequently, the purchase of national defense of communication equipments shall focus on excellent quality and reasonable price. The radio frequency-hopping systems (RFHS) produced by the A company is are the main communication equipments of R.O.C. Recently, this company announced that they designed a new version of RFHS, and that the new one is exactly better than the old one. To confirm whether we shall purchase the new one or not, this paper proposed a series of communication tests that include two phases: communication quality and connection speed. Totally, there are 50 testing items to be defined. In addition, we also considered five possible influence factors: rough grounds, forest, buildings, temperature, and humidity. The experimental results demonstrated that 1.Among the 50 items, there are 17 to support the hypothesis: the new is significantly better than the old; 2.No mater rough grounds, forest, or buildings, communication environment is really an influence factor. Then, the cases relating to buildings are the worst; 3.Temperature and humidity are not significantly correlated with the testing results, including communication quality and connection speed