Position-determining device

Patent metadata

Field	Value
Publication number	US-11112496-B2
Application number	US-201616065857-A
Country	US
Kind code	B2
Filing date	Dec 22, 2016
Priority date	Dec 31, 2015
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A position determining device for determining the position of an object with reference to the position determining device, the position determining device encompassing: a transmitting device at a first location; a receiving device at a second location, the receiving device being configured for reception of a transmitted signal from the first transmitting device, and for determination of a transit time of the transmitted signal from the transmitting device to the object and from the object to the receiving device, the first location and the second location being at a distance from one another, and the position determining device being configured to determine, from the transit time, an ellipse on which the object lies and which has the first location and the second location as foci.

First claim

The invention claimed is:

1. A position determining device for determining the position of an object with reference to the position determining device,
the position determining device comprising:
a first transmitting device at a first location,
a second transmitting device at a second location,
a first receiving device at the first location, for generating a first received signal from a transmitted signal of the second transmitting device,
a second receiving device at the second location, for generating a second received signal from a transmitted signal of the first transmitting device,
wherein an illumination region of the first transmitting device overlapping with an illumination region of the second transmitting device,
wherein the first transmitting device being configured to transmit at a first transmission frequency and the second transmitting device to transmit at a second transmission frequency, the first transmission frequency differing from the second transmission frequency by a frequency difference,
wherein the first transmission frequency and the second transmission frequency being modulated in the same manner, being in particular frequency-modulated, phase-modulated, and/or amplitude-modulated, and

the first and second receiving devices being configured
for determination of transit times signals that transit from one of the first and second transmitting devices to one of the first and second receiving devices,
wherein the first location and the second location are at a distance from one another, and the position determining device is configured to determine, from the transit time, an ellipse on which the object lies and which has the first location and the second location as foci,

the position determining device furthermore comprising:
a first received signal mixing device for mixing the first received signal with the first transmission frequency to generate a first intermediate signal,
a second receiving signal mixing device for mixing the second received signal with the second transmission frequency to generate a second intermediate signal, and
an intermediate signal mixing device for mixing the first intermediate signal, or a component thereof, with the second intermediate signal, or a component thereof, to generate an ellipse determining signal,

wherein the intermediate signal encompasses a direct component and a transverse component; and the entire intermediate signal is used for position determination, the direct and transverse components being separated from one another by a Fourier transform.

2. A position determining device for determining the position of an object with reference to the position determining device,
the position determining device comprising:
a first transmitting device at a first location,
a second transmitting device at a second location,
a first receiving device at the first location, for generating a first received signal from a transmitted signal (SS 2 ) of the second transmitting device (SE 2 ),
a second receiving device at the second location, for generating a second received signal from a transmitted signal of the first transmitting device,
wherein an illumination region of the first transmitting device overlapping with an illumination region of the second transmitting device,
wherein the first transmitting device being configured to transmit at a first transmission frequency and the second transmitting device to transmit at a second transmission frequency, the first transmission frequency differing from the second transmission frequency by a frequency difference,
wherein the first transmission frequency and the second transmission frequency being modulated in the same manner, being in particular frequency-modulated, phase-modulated, and/or amplitude-modulated, and

the first and second receiving devices being configured
for determination of transit times of signals that transit from one of the first and second transmitting devices to one of the first and second receiving devices,
wherein the first location and the second location are at a distance from one another, and the position determining device is configured to determine, from the transit time, an ellipse on which the object lies and which has the first location and the second location as foci,

the position determining device furthermore comprising:
a first received signal mixing device for mixing the first received signal with the first transmission frequency to generate a first intermediate signal,
a second receiving signal mixing device for mixing the second received signal with the second transmission frequency to generate a second intermediate signal, and
an intermediate signal mixing device for mixing the first intermediate signal, or a component thereof, with the second intermediate signal, or a component thereof, to generate an ellipse determining signal
a signal separating device for separating one component of a signal in the position determining device from another component of the signal in order to further process a desired component of the signal, the signal separating device comprising:
a first intermediate signal low-pass filtering device for low-pass filtering of the first intermediate signal in order to obtain a first subtractive mixed term of the first intermediate signal, and/or
a second intermediate signal low-pass filtering device for low-pass filtering of the second intermediate signal in order to obtain a second subtractive mixed term of the second intermediate signal, and/or
a first intermediate signal separating device for removing a first transverse component from the first subtractive mixed term of the first intermediate signal, and/or
a second intermediate signal separating device for removing a second transverse component from the subtractive mixed component of the second intermediate signal, and/or
a high-pass filtering device for high-pass filtering of the ellipse determining signal in order to extract the additive mixed component from the ellipse determining signal for further processing.

3. The position determining device according claim 1 , wherein the position determining device comprises an ellipse determining device for determining an ellipse, the ellipse being determinable, by means of the ellipse determining device, from the frequency of an additive mixed component of the ellipse determining signal.

4. The position determining device according to claim 1 , wherein the position determining device comprises a device for trilateration, the position determining device being configured
to receive, at the first receiving device, a first trilateration received signal from the first transmitting device and, at the second receiving device, a second trilateration received signal from the second transmitting device,
in order to ascertain, by means of the device for trilateration, a position of an object with reference to the first location and/or the second location,
the device for trilateration being configured in particular to carry out the trilateration by means of a first direct component and a second direct component, the first direct component being removed from the first subtractive intermediate signal mixed term, and/or the second direct component being removed from the second subtractive intermediate signal mixed term.

5. The position determining device according to claim 1 , wherein by means of the position determining device, a position of an object which is determined in particular by means of trilateration is checkable for plausibility by the fact that the position determining device is configured to ascertain whether the position of the same object lies on an ellipse that is determined by the position determining device for that object.

6. A method for determining a position of an object with reference

Assignees

• Iee Sa

Inventors

• Diewald Andreas

Classifications

• G01S2013/93271

  in the front of the vehicles · CPC title

• G01S2013/93274

  on the side of the vehicles · CPC title

• G01S2013/93272

  in the back of the vehicles · CPC title

• G01S13/003 Primary

  Bistatic radar systems; Multistatic radar systems · CPC title

• G01S2013/466

  by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined · CPC title