LASER DISTANCE MEASURING MODULE HAVING POLARIZATION ANALYSIS
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Accused Products
Abstract
A distance measuring method and an electronic laser distance measuring module, for determining a distance to a target object, wherein the transmitted signal is emitted with selected polarization states by a transmitting unit of the laser distance measuring module. The transmitted signal is emitted and the received signal is acquired such that a polarization identifier of the polarization state of the transmitted signal adheres to the received signal and an evaluation of the received signal is derived based on the polarization identifier, to take into consideration multiple reflections during the processing of the received signal to determine the distance.
14 Citations
30 Claims
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1-15. -15. (canceled)
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16. A method of measuring a distance to a target object, the method comprising:
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emitting a transmitted signal in a defined polarization state; receiving at least parts of the transmitted signal reflected on the target object as a received signal, wherein the transmitted signal is emitted and the received signal is acquired such that a polarization identifier of the defined polarization state of the transmitted signal adheres to the received signal, wherein the polarization identifier is selected as an indication as to whether the received signal originates from a single reflection or a multiple reflection of the transmitted signal; based on the polarization identifier, deriving an evaluation of the received signal is derived; and processing the received signal to derive the distance to the target object therefrom based on the evaluation of the received signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A distance measuring module for determining a distance to a target object, the distance measuring module comprising:
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a transmitting unit for emitting a transmitted signal; a receiving unit for receiving at least parts of the transmitted signal reflected on the target object as a received signal; and a monitoring and control unit for processing the received signal to derive the distance to the target object therefrom, wherein the transmitting unit and the receiving unit are configured such that; the transmitted signal is emitted in a defined polarization state, and the transmitted signal is emitted and the received signal is acquired such that a polarization identifier of the polarization state of the transmitted signal adheres to the received signal, wherein the polarization identifier is selected so that it is an indication for whether the received signal originates from a single reflection or a multiple reflection of the transmitted signal, and an evaluation of the received signal is derived by the monitoring and control unit based on the polarization identifier, and is taken into consideration during the processing of the received signal to determine the distance to the target object. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification