Device and method for ascertaining a property of an object

Patent metadata

Field	Value
Publication number	US-2016195608-A1
Application number	US-201614987870-A
Country	US
Kind code	A1
Filing date	Jan 5, 2016
Priority date	Jan 5, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

A device and a method for ascertaining a property of an object includes: emitting a first electromagnetic wave having a first frequency within a first frequency range for the at least partial reflection at the object as a first reflected electromagnetic wave; emitting a second electromagnetic wave having a second frequency within a second frequency range for the at least partial reflection at the object as a second reflected electromagnetic wave, the first and the second frequency range being disjunct; generating a first measurement signal based on the received first reflected electromagnetic wave; generating a second measurement signal based on a received second reflected electromagnetic wave; and analyzing the first measurement signal and the second measurement signal to ascertain the property of the object.

First claim

What is claimed is:

1 . A device for ascertaining a property of an object, comprising
a transmitter device, by which a first electromagnetic wave having a first frequency spectrum within a first frequency range is emittable for the at least partial reflection at the object as a first reflected electromagnetic wave, and by which a second electromagnetic wave having a second frequency spectrum within a second frequency range is emittable for the at least partial reflection at the object as a second reflected electromagnetic wave, the first and the second frequency range being disjunct; a receiver device, by which the first and second reflected electromagnetic waves are receivable and by which a first measurement signal is generatable based on a received first reflected electromagnetic wave, and a second measurement signal is generatable based on a received second reflected electromagnetic wave; and an evaluation device to ascertain a property of the object based on the first measurement signal and the second measurement signal.

2 . The device of claim 1 , wherein the first measurement signal indicates a first spectroscopic property of the received first reflected electromagnetic wave, and the second measurement signal indicates a second spectroscopic property of the received second reflected electromagnetic wave, wherein the evaluation device is configured to compare the first spectroscopic property having the first frequency spectrum or a frequency spectrum derived from the first frequency spectrum in a first comparison, and to compare the second spectroscopic property having the second frequency spectrum or a frequency spectrum derived from the second frequency spectrum in a second comparison, and wherein the evaluation device is configured to ascertain the property of the object based on the result of the first and second comparisons.

3 . The device of claim 2 , wherein the evaluation device is configured to compare the result of the first comparison with the result of the second comparison in a third comparison, and for ascertaining the property of the object based on the result of the third comparison.

4 . The device of claim 1 , wherein the first frequency range or the second frequency range ranges from 300 gigahertz to 3 terahertz.

5 . The device of claim 1 , wherein the first frequency range or the second frequency range ranges from 500 megahertz to 100 gigahertz.

6 . The device of claim 1 , wherein the first electromagnetic wave and the second electromagnetic wave are emittable at the same time.

7 . A method for ascertaining a property of an object, the method comprising:
emitting a first electromagnetic wave having a first frequency within a first frequency range for the at least partial reflection at the object as a first reflected electromagnetic wave; emitting a second electromagnetic wave having a second frequency within a second frequency range for the at least partial reflection at the object as a second reflected electromagnetic wave, the first and the second frequency range being disjunct; generating a first measurement signal based on a received first reflected electromagnetic wave; generating a second measurement signal based on a received second reflected electromagnetic wave; and evaluating the first measurement signal and the second measurement signal to ascertain the property of the object.

8 . The method of claim 7 , wherein the first measurement signal indicates a first spectroscopic property of the received first reflected electromagnetic wave, and the second measurement signal indicates a second spectroscopic property of the received second reflected electromagnetic wave, and wherein the evaluation of the first measurement signal and the second measurement signal include the following:
comparing, in a first comparison, the first spectroscopic property having the first frequency spectrum or a frequency spectrum derived from the first frequency spectrum; and comparing, in a second comparison, the second spectroscopic property having the second frequency spectrum or a frequency spectrum derived from the second frequency spectrum, the property of the object being ascertained based on the result of the first comparison and the second comparison.

9 . The method of claim 8 , wherein the evaluation of the first measurement signal and the second measurement signal includes the following:
comparing, in a third comparison, the result of the first comparison to the result of the second comparison; wherein the property of the object is ascertained based on the result of the third comparison.

10 . The method of claim 7 , wherein the first electromagnetic wave and the second electromagnetic wave are emitted at the same time.

Assignees

• Bosch Gmbh Robert

Inventors

• Ruenz Johannes

Classifications

• G01S13/931

  of land vehicles · CPC title

• G01S7/411 Primary

  Identification of targets based on measurements of radar reflectivity (G01S7/415 takes precedence) · CPC title

• G01S7/412

  based on a comparison between measured values and known or stored values · CPC title

• G01S13/0209

  Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband · CPC title

• G01S13/93

  for anti-collision purposes · CPC title