Radar detection method and apparatus using the same

1. A method for detecting radar signal, comprising the steps of:

sampling a received signal so as to obtain a plurality of sampling values;

performing a calculation based on absolute values of the sampling values so as to obtain at least two parameters, wherein the at least two parameters are statistical characteristics of the sampling values; and

determining whether the received signal includes radar signals in accordance with a group distribution of the at least two parameters.

2. The method of claim 1 , wherein the at least two parameters are mean and variance.

3. The method of claim 1 , further comprising the step of examining pulse intervals of the received signal.

4. The method of claim 3 , further comprising the steps of:

recording the pulse intervals; and

comparing the pulse intervals with a pulse interval table to determine whether the received signal includes radar signals, wherein the pulse interval table comprises corresponding radar parameters.

5. The method of claim 4 , wherein the pulse interval table includes parameters of radar signals regulated by the United States Federal Communication Committee or European Communication Standard Institute.

6. The method of claim 1 , wherein the step of determining whether the received signal includes radar signals in accordance with the at least two parameters comprises:

setting at least one threshold; and

comparing the distribution of the at least two parameters with the at least one threshold so as to determine whether the received signal includes radar signals.

7. The method of claim 1 , further comprising a step after determining whether the received signal includes radar signals in accordance with the at least two parameters, the step comprising:

applying a dynamic frequency selection to alter frequency if the received signal includes radar signal.

8. The method of claim 1 , wherein the step of performing a calculation based on absolute values of the sampling values so as to obtain at least two parameters uses a sliding window to obtain the at least two parameters.

9. An apparatus for radar signal detection, comprising:

a parameter extractor configured to extract at least two parameters from the absolute value of a received signal, wherein the at least two parameters are statistical characteristics of the absolute value; and

a signal classifier configured to compare a group distribution of the at least two extracted parameters with existing parameter patterns of radar signals so as to determine whether the received signal includes radar signals.

10. The apparatus of claim 9 , wherein the extracted parameters are mean and variance.

11. The apparatus of claim 9 , wherein the signal classifier compares the extracted parameter with at least one threshold so as to determine whether the received signal includes radar signals.

12. The apparatus of claim 9 , further comprising:

a signal comparator configured to record and compare the pulse intervals of the received signal with a pulse interval table.

13. The apparatus of claim 12 , wherein the pulse interval table includes parameters of radar signals regulated by the United States Federal Communication Committee or European Communication Standard Institute.