Measurement of Shaft-rate Modulated Electric Fields of Ship in Shallow Sea
As an intrinsic characteristic, the shaft-rate modulated electric field of a ship is an important signal source in underwater domain. A measurement system is designed to measure the shaft-rate modulated electric field of a ship. Taking into consideration the pressure bearing, watertightness and other problems, the system is made up of sensors, signal condition circuits, and data acquisition and processing system. After the measurement system is sunk down to the seabed, it is difficult to regulate orientation, attitude and other sensor parameters. It is also hard to control the environment around the system. Therefore, the status information of the seabed is recorded for posterior calibration. Frequency analysis and time-frequency analysis methods are used for signal processing. Experiment results show that the spatial distribution of shaft-rate modulated electric field has a significant regional property and apparent traffic characteristic.
Measurement of electric field time frequency analysis ship electric field sea test
Shen Bin Gong Shen-guang Chen Xin-qin Zhang Fan
Dept. of Weaponry Engineering, Naval Univ. of Engineering, Wuhan 430033, China Wuhan non-commisioned Dept. of Weaponry Engineering, Naval Univ. of Engineering, Wuhan 430033, China
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-6
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）