Method and device for processing radar signals

Patent metadata

Field	Value
Publication number	US-2016131744-A1
Application number	US-201514931361-A
Country	US
Kind code	A1
Filing date	Nov 3, 2015
Priority date	Nov 11, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A method for processing radar signals, wherein said radar signals comprise digitized data received by at least one radar antenna, the method comprising (i) determining FFT results based on the digitized data received; and (ii) storing a first group of the FFT results, wherein the first group of FFT results comprises at least two portions, wherein a first portion of FFT results is stored with a first accuracy and a second portion of FFT results is stored with a second accuracy.

First claim

1 . A method for processing radar signals, wherein said radar signals comprise digitized data received by at least one radar antenna, the method comprising:
determining FFT results based on the digitized data received; and storing a first group of the FFT results, wherein the first group of FFT results comprises at least two portions, wherein a first portion of FFT results is stored with a first accuracy and a second portion of FFT results is stored with a second accuracy.

2 . The method according to claim 1 , wherein the first accuracy corresponds to FFT results without compression.

3 . The method according to claim 1 , wherein the second accuracy is lower than the first accuracy.

4 . The method according to claim 1 , wherein the FFT results of the second portion are determined by combining FFT results based on the digitized data.

5 . The method according to claim 1 , wherein the second accuracy is lower than the first accuracy and wherein the first accuracy corresponds to a first range and the second accuracy corresponds to a second range, wherein the first range is closer than the second range.

6 . The method according to claim 1 , wherein the first group of FFT results comprises more than two portions with different accuracies, wherein the different accuracies increase with an increasing distance.

7 . The method according to claim 1 , further comprising:
determining the accuracy for each portion of FFT results based on a predefined condition.

8 . The method according to claim 7 , wherein the predefined condition comprises a speed information.

9 . The method according to claim 7 , wherein the predefined condition comprises an environment information.

10 . The method according to claim 7 , wherein the predefined condition comprises a CFAR information.

11 . The method according to claim 1 , further comprising:
storing the first group of the FFT results without a second group of the FFT results.

12 . The method according to claim 11 , further comprising:
processing the first group of FFT results.

13 . The method according to claim 11 , wherein the FFT results are first stage FFT results.

14 . The method according to claim 11 , further comprising:
determining the first group of FFT results and/or the second group of FFT results based on a predefined condition.

15 . The method according to claim 14 , wherein the predefined condition comprises a speed information.

16 . The method according to claim 14 , wherein the predefined condition comprises an environment information.

17 . The method according to claim 14 , wherein determining the FFT results and determining and the first group of FFT results and/or the second group of FFT results is provided by a single device, in particular a single chip.

18 . The method according to claim 14 , wherein the predefined condition comprises an CFAR information.

19 . The method according to claim 14 , further comprising:
determining the second group of FFT results based on a mask bit, wherein one mask bit is provided for each FFT result of the first group and of the second group.

20 . A device for processing radar signals, comprising:
a FFT engine configured to determine FFT results based on digitized data received from at least one antenna; and a compression engine configured to store a first group of the FFT results, wherein the first group of FFT results comprises at least two portions, wherein a first portion of FFT results is stored with a first accuracy and a second portion of FFT results is stored with a second accuracy.

21 . The device according to claim 20 , wherein the FFT engine and the compression engine are arranged on a single component, in particular on a single chip.

22 . The device according to claim 20 , further comprising:
bin rejection engine configured to store the first group of the FFT results without a second group of the FFT results.

23 . The device according to claim 22 , wherein the FFT engine and the bin rejection engine are arranged on a single component, in particular on a single chip.

24 . A device for processing radar signals, wherein said radar signals comprise digitized data received by at least one radar antenna, comprising:
means for determining FFT results based on the digitized data received; and means for storing a first group of the FFT results, wherein the first group of FFT results comprises at least two portions, wherein a first portion of FFT results is stored with a first accuracy and a second portion of FFT results is stored with a second accuracy.

25 . The device according to claim 24 , further comprising:
means for storing the first group of the FFT results without at second group of the FFT results.

26 . A computer program product directly loadable into a memory of a digital processing device, comprising software code portions for performing the steps of the method according to claim 1 .

Assignees

• Infineon Technologies Ag

Inventors

• Addison David
• Nugraha Dian Tresna
• Roger Andre
• Ygnace Romain

Classifications

• G01S2013/9315

  Monitoring blind spots · CPC title

• G01S13/34

  using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal · CPC title

• G01S7/354

  Extracting wanted echo-signals (Doppler systems G01S13/50) · CPC title

• G01S7/414

  Discriminating targets with respect to background clutter · CPC title

• G01S13/931 Primary

  of land vehicles · CPC title