Title:
CHANNEL DETECTION METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/072711
Kind Code:
A1
Abstract:
A channel detection method and apparatus. The method comprises: performing zero-crossing detection on a received radio frequency signal to obtain zero-crossing data of the radio frequency signal; performing linearity detection on the zero-crossing data of the radio frequency signal to obtain linearity feature data; and if the linearity feature data satisfies a determination condition for a radar signal, determining that a frequency band corresponding to the radio frequency signal is occupied by a radar. Therefore, the frequency of a radar signal can be accurately measured, and the interference resistance is high, such that a wireless communication device avoids a radar channel during the use of a DFS frequency band, in order to ensure the normal transmission of data.
Inventors:
WANG YU (CN)
WANG YAN (CN)
ZHAO DAN (CN)
WANG YAN (CN)
ZHAO DAN (CN)
Application Number:
PCT/CN2019/111739
Publication Date:
April 22, 2021
Filing Date:
October 17, 2019
Export Citation:
Assignee:
SZ DJI TECHNOLOGY CO LTD (CN)
International Classes:
H04B7/005
Foreign References:
| CN1979217A | 2007-06-13 | |||
| CN209085657U | 2019-07-09 | |||
| CN110073301A | 2019-07-30 | |||
| CN110161463A | 2019-08-23 | |||
| US4707135A | 1987-11-17 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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