发明名称 |
Active remote sensing using a simultaneous spectral sampling technique |
摘要 |
A system for sensing a characteristic of a sample may include a tunable source configured to emit optical radiation that varies over a wavelength range at a sweep frequency and a reference source configured to emit optical radiation at a reference wavelength. A first modulator may be configured to modulate the first optical radiation at a first frequency, and a second modulator may be configured to modulate the second optical radiation at a second frequency that is different from the first frequency and the sweep frequency. A science detector may be configured to detect the optical radiation from the first modulator and the second modulator after interaction with the sample and generate a science signal. A number of lock-in amplifiers may be respectively configured to generate components of the science signal that are present at the first and second frequencies. A processor may be configured to determine a characteristic of the sample based on the components of the science signal that are present at the first and second frequencies.
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申请公布号 |
US7009170(B2) |
申请公布日期 |
2006.03.07 |
申请号 |
US20030603695 |
申请日期 |
2003.06.26 |
申请人 |
ITT MANUFACTURING ENTERPRISES, INC. |
发明人 |
DOBBS MICHAEL E.;PRUITT JEFF D.;GYPSON MATTHEW L.;NEFF BENJAMIN R. |
分类号 |
H01J40/14;G01N21/00;G01N21/31;G01N21/39;G01N33/00;H01J5/16 |
主分类号 |
H01J40/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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