METHOD FOR DETERMINING THE VALIDITY OF RADAR MEASURED VALUES IN ORDER TO DETERMINE AN OCCUPANCY STATE OF A PARKING SPACE

1 - 9 . (canceled)

10 . A method for determining validity of radar measured values to determine an occupancy state of a parking space, comprising the following method steps:

a. detecting radar measured values of multiple radar channels at a predefined point in time using at least one radar sensor, each of the radar measured values being made up of a real part and an imaginary part;

b. transforming the radar measured values into a polar coordinate system;

c. determining both a first parameter and a second parameter of each of the transformed radar measured values using a linearized least-squares polynomial fit method;

d. determining a variance of the first parameters and second parameters determined in step c; and

e. determining the validity of the radar measured values as a function of the variance.

11 . The method as recited in claim 10 , wherein the validity of the radar measured values is determined in step e by comparing the variance to a threshold value, the validity of the radar measured values being regarded as sufficient when the variance is less than the threshold value.

12 . The method as recited in claim 11 , wherein the threshold value is 10 .

13 . The method as recited in claim 10 , further comprising the following step:

f. after step e, determining the occupancy state of the parking space as a function of the detected radar measured values.

14 . The method as recited in claim 10 , wherein steps a through d are repeated, the radar measured values of all channels being detected in each case at different points in time within a predefined time period in step a, and after step e, step g is performed in which the occupancy state of the parking space is determined as a function of the first parameter.

15 . The method as recited in claim 14 , wherein the first parameter is compared to a further threshold value in step g, the parking space being determined as occupied when the first parameter is greater than the further threshold value.

16 . The method as recited in claim 15 , wherein the further threshold value is 1.

17 . A device, comprising:

at least one radar sensor; and

a processing unit configured to determine validity of radar measured values to determine an occupancy state of a parking space, the processing unit configured to:

a. detect radar measured values of multiple radar channels at a predefined point in time using at least one radar sensor, each of the radar measured values being made up of a real part and an imaginary part;

b. transform the radar measured values into a polar coordinate system;

c. determine both a first parameter and a second parameter of each of the transformed radar measured values using a linearized least-squares polynomial fit method;

d. determine a variance of the first parameters and second parameters determined in c; and

e. determine the validity of the radar measured values as a function of the variance.

18 . A parking area, comprising:

at least one parking space, the parking space including a device, including:

at least one radar sensor; and

a processing unit configured to determine validity of radar measured values to determine an occupancy state of the parking space, the processing unit configured to:

a. detect radar measured values of multiple radar channels at a predefined point in time using at least one radar sensor, each of the radar measured values being made up of a real part and an imaginary part;

b. transform the radar measured values into a polar coordinate system;

c. determine both a first parameter and a second parameter of each of the transformed radar measured values using a linearized least-squares polynomial fit method;

d. determine a variance of the first parameters and second parameters determined in c; and

e. determine the validity of the radar measured values as a function of the variance.