摘要
针对海洋赤潮的实时监测和预报,提出了一种通过检测海水中布里渊散射回波信号,获取海洋赤潮水体温度和盐度分布信息的双参数检测技术。通过分析布里渊散射理论,建立基于机载蓝绿激光雷达的布里渊散射信号频移量和布里渊散射信号能量与海水温度和盐度的关系模型。通过仿真计算,可由海水中的蓝绿激光布里渊散射回波信号的频移量和能量,分别得出海表及海水50m深度以内温度和盐度的分布情况,从而可以实现海水温度和盐度的双参数实时获取,为实时判断海洋赤潮的消长过程提供理论依据。
Aming at the monitoring and forecasting of the growth of ocean red tide, an ocean en- vironment monitoring and forecasting technology based on the detecting of the Brillouin scat- tering echo signal is proposed. This technology can detect the double parameters about the o- cean red tide temperature and salinity information. Based on the Brillouin scattering theory, the relationship of the blue-green laser＇s Brillouin scattering frequency shift value and energy value with the seawater temperature and salinity is found. Then, the detecting model of the seawater temperature and salinity is established. The blue-green laser＇s Brillouin scattering frequency shift value and energy value are evaluated by simulating and calculating, and the temperature and salinity of the seawater at 0-50 m are known. Based on the double-parameter monitoring technology, the growth and decline of the ocean red tide can be monitored and fore- casted.
出处
《应用光学》
CAS
CSCD
北大核心
2012年第2期327-332,共6页
Journal of Applied Optics
基金
湖北省教育厅科技项目(Q20092601)
孝感学院科技项目(z2010007)
关键词
海洋监测
布里渊散射
温度
盐度
赤潮
marine monitoring
Brillouin scattering
temperature
salinity
red tide
