Method for optical sensing
First Claim
1. A method for determining optical properties of a target, using a plurality of transmitters for transmitting signals at the target, and a plurality of receivers for detecting reflected signals from the target, comprises the steps of:
- a. transmitting radiation signals with a plurality of wavelengths at the target;
b. detecting reflected trace radiation signals from the target;
c. modulating the plurality of transmitters with a waveform for generating transmitter modulation codes;
d. mixing the transmitter modulation codes with the reflected trace radiation signals to generate total signals;
e. transmitting the total signals at the target;
f. detecting reflected total signals from the target;
g. decoding the known waveform of each transmitter of the plurality of transmitters for determining each transmitter'"'"'s signal;
h. dispreading the reflected total signals with a device capable of bipolar signal processing to generate equivalent decoding functions with orthogonality;
i. digitizing the reflected total signals with an analog-digital converter to generate digitized signals;
j. integrating the digitized signals with the decoding functions to extract individual signals from the total signals; and
k. determining the optical properties of the target from the individual signals, selected from a group consisting of optical power, time delay, polarization, and beam.
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Accused Products
Abstract
A method for determining optical properties of a target, using a plurality of transmitters for transmitting signals at the target, and a plurality of receivers for detecting reflected signals from the target, comprises the steps of: a) transmitting radiation signals with a plurality of wavelengths at the target; b) detecting trace reflected radiation signals from the target; c) modulating the plurality of transmitters with a waveform for generating transmitter modulation codes; d) mixing the transmitter modulation codes with the trace reflected radiation signals to generate total signals; e) transmitting the total signals at the target; f) detecting reflected total signals from the target; g) digitizing the reflected total signals with an analog-digital converter to generate digitized signals; h) integrating the digitized signals with decoding functions to extract individual signals from the total signals; and i) determining the optical properties of the target from the individual signals.
39 Citations
10 Claims
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1. A method for determining optical properties of a target, using a plurality of transmitters for transmitting signals at the target, and a plurality of receivers for detecting reflected signals from the target, comprises the steps of:
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a. transmitting radiation signals with a plurality of wavelengths at the target;
b. detecting reflected trace radiation signals from the target;
c. modulating the plurality of transmitters with a waveform for generating transmitter modulation codes;
d. mixing the transmitter modulation codes with the reflected trace radiation signals to generate total signals;
e. transmitting the total signals at the target;
f. detecting reflected total signals from the target;
g. decoding the known waveform of each transmitter of the plurality of transmitters for determining each transmitter'"'"'s signal;
h. dispreading the reflected total signals with a device capable of bipolar signal processing to generate equivalent decoding functions with orthogonality;
i. digitizing the reflected total signals with an analog-digital converter to generate digitized signals;
j. integrating the digitized signals with the decoding functions to extract individual signals from the total signals; and
k. determining the optical properties of the target from the individual signals, selected from a group consisting of optical power, time delay, polarization, and beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification
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- Resources
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Current AssigneeBoard Of Regents Of The University Of Houston System
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Original AssigneeBoard Of Regents Of The University Of Houston System
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InventorsLe, Han Quang
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current436/164
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CPC Class CodesG01N 21/4795 spatially resolved investig...
