METHOD, SYSTEM AND CALIBRATION TARGET FOR THE AUTOMATIC CALIBRATION OF AN IMAGING ANTENNA ARRAY
First Claim
1. A method for automatic calibration of an imaging array using an evaluation device, in which the imaging array transmits signals and receives signals reflected from a calibration object of known shape, wherein the calibration object provides at least one diffuse reflector, and wherein position coordinates of the calibration object are entered, the method comprising:
- calculating the reflections of the calibration object;
calculating calibration data;
preparing an image of the calibration object with the use of the calibration data;
determining corrected position coordinates by evaluating the image of the at least one diffuse reflector; and
implementing the calculating, preparing, and determining steps with the corrected position coordinates.
1 Assignment
0 Petitions
Accused Products
Abstract
The system is used for the automatic calibration of an imaging array using an evaluation unit. The array transmits signals and receives the signals reflected from a calibration object of known shape. The calibration object provides at least one diffuse reflector. In the evaluation method, position coordinates of the calibration object are entered, and the following method steps are implemented after the measurement of the reflected signals: (i) calculate the reflections of the calibration object, (ii) calculate calibration data, (iii) prepare an image of the calibration object with the use of the calibration data, (iv) determine corrected position coordinates by evaluating the image of the at least one diffuse reflector, and (v) implement steps (i) to (iv) with corrected position coordinates.
-
Citations
19 Claims
-
1. A method for automatic calibration of an imaging array using an evaluation device, in which the imaging array transmits signals and receives signals reflected from a calibration object of known shape, wherein the calibration object provides at least one diffuse reflector, and wherein position coordinates of the calibration object are entered, the method comprising:
-
calculating the reflections of the calibration object; calculating calibration data; preparing an image of the calibration object with the use of the calibration data; determining corrected position coordinates by evaluating the image of the at least one diffuse reflector; and implementing the calculating, preparing, and determining steps with the corrected position coordinates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17, 18)
-
-
8. A system for automatic calibration of an imaging array, comprising:
-
an evaluation device; and a calibration object including a reflecting surface, which faces towards the imaging array, and at least one diffuse reflector directed towards the imaging array, wherein the imaging array transmits signals and receives the signals reflected from the calibration object, wherein the evaluation device evaluates the received signals, and wherein the at least one diffuse reflector reflects in a diffuse manner signals which strike it. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 19)
-
-
16. A calibration object for automatic calibration of an imaging array with a reflecting surface comprising at least one diffuse reflector directed towards the imaging array on and/or near the reflecting surface, the at least one diffuse reflector reflecting in a diffuse manner signals which strike it,
wherein the diffuse reflector is embodied as a needle-shaped, metallic or metallised pin and provides a tip of which a spatial extension is in a same order of magnitude as a wavelength of the signals, and/or wherein the diffuse reflector is embodied as a recess, and/or wherein the diffuse reflector provides a material with a diffuse reflecting surface and provides a round or cruciform contour.
Specification