Title:
SIGNAL PROCESSING DEVICE, SOUND WAVE SYSTEM AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/026666
Kind Code:
A1
Abstract:
This signal processing device is provided with: a transmission signal generation unit which generates a transmission signal for transmission of sound waves and which includes a first and second chirp signal (TX1, TX3) in the transmission signal; a received signal output unit which outputs a received signal based on the reception of sound waves; and a derivation unit which derives a velocity relative to a target on the basis of a first timing, at which a part (RX1) of the received signal that corresponds to the first chirp signal (TX1) is detected, and a second timing at which a part (RX3) of the received signal that corresponds to the second chirp signal (TX3) is detected. The frequency of one of the first and second chirp signal increases with time, and the frequency of the other decreases with time.
Inventors:
TAKAMURA SHOGO (JP)
Application Number:
PCT/JP2022/025241
Publication Date:
March 02, 2023
Filing Date:
June 24, 2022
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
G01S15/32; G01S7/524; G01S7/526; G01S15/58
Domestic Patent References:
| WO2021130818A1 | 2021-07-01 | |||
| WO2020004609A1 | 2020-01-02 |
Foreign References:
| JP2021004797A | 2021-01-14 | |||
| US20200209388A1 | 2020-07-02 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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