The impact of microwave sweeper power fluctuation in the BOTDA system has been theoretically analyzed and experimentally tested. And a novel method comparing real-time acquisition of probe wave power with a new algori...The impact of microwave sweeper power fluctuation in the BOTDA system has been theoretically analyzed and experimentally tested. And a novel method comparing real-time acquisition of probe wave power with a new algorithm to realize probe wave power normalization for eliminating this impact was proposed. The principle of the proposed method was described theoretically. And the contrast test between our new method and conventional one was carried out. The experiment results indicated that the temperature accuracy was effectively improved from ＋5 C to 2 C.展开更多
Recently, the local government of Yibin Sichuan Province, sent 70 street sweepers to Singapore to learn from the country’s experience in keeping the city cleaner and more beautiful. This is the second time that the g...Recently, the local government of Yibin Sichuan Province, sent 70 street sweepers to Singapore to learn from the country’s experience in keeping the city cleaner and more beautiful. This is the second time that the government of Yibin sponsored street sweepers for an overseas study tou after tours to Hong Kong and Macao展开更多
文摘The impact of microwave sweeper power fluctuation in the BOTDA system has been theoretically analyzed and experimentally tested. And a novel method comparing real-time acquisition of probe wave power with a new algorithm to realize probe wave power normalization for eliminating this impact was proposed. The principle of the proposed method was described theoretically. And the contrast test between our new method and conventional one was carried out. The experiment results indicated that the temperature accuracy was effectively improved from ＋5 C to 2 C.
文摘Recently, the local government of Yibin Sichuan Province, sent 70 street sweepers to Singapore to learn from the country’s experience in keeping the city cleaner and more beautiful. This is the second time that the government of Yibin sponsored street sweepers for an overseas study tou after tours to Hong Kong and Macao
