您的位置: 首页 > 农业专利 > 详情页

PEAK FREQUENCY MEASUREMENT SYSTEM FOR SUBJECT-STATE ANALYZING SIGNAL
专利权人:
发明人:
申请号:
EP11742343.4
公开号:
EP2537462A1
申请日:
2011.02.14
申请国别(地区):
EP
年份:
2012
代理人:
摘要:
A system for measuring a peak frequency of a signal applies a Maximum Entropy Method to the signal obtained through transmission and reception of an electromagnetic wave to a subject to obtain a frequency of a peak component to be measured so as to acquire a predetermined information, avoiding influence of a noise, thus permitting to make an appropriate assessment on a state of the subject. A signal analysis unit (12) performs a spectrum estimation utilizing the Maximum Entropy Method applied to a signal part of the phase difference signal with a predetermined short analysis duration, from a phase difference signal obtained by an electromagnetic wave transmitting and receiving unit (11) and including also the noise excluding the peak component to be measured, to obtain a frequency indicative of occurrence frequency of the peak component, and conducts repeatedly the same process, while shifting a position to be analyzed, corresponding to the analysis duration, thus introducing continuously the frequency. It is therefore possible to know a transition with time of the frequency of the peak component and derive a state of variation of the peak component to be measured in the phase difference signal in a short period of time, so as to make an appropriate assessment.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

意 见 箱

匿名:登录

个人用户登录

找回密码

第三方账号登录

忘记密码

个人用户注册

必须为有效邮箱
6~16位数字与字母组合
6~16位数字与字母组合
请输入正确的手机号码

信息补充

网站统计