Title:
レーダシステム及びそのレーダ信号処理方法
Document Type and Number:
Japanese Patent JP6716435
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To output a highly accurate position of an object by reducing effect of a time error due to separate arrangement of a plurality of radar devices.SOLUTION: A radar system of an embodiment comprises Ntr ((Ntr≥2) transmitter-receiver. The transmission-side device transmits an at least pulse modulated signal of an up or a down sweep having a frequency sweep gradient after modulation, with communication information that includes a position, a transmission frequency and a transmission time as a modulated signal. The receiving-side device: sweeps a local signal the same way as the transmission-side device; receives a direct wave from the transmission-side devices or a reflected wave from an object; changes an FFT (Fast Fourier Transmission) start time in multiple ways and selects a start time at which an FFT output is maximum; evens out a received local signal on the basis of the demodulated communication information after demodulating the communication information and causes the evened received local signal to synchronize with the received signal; corrects a reference signal for pulse compression; performs a pulse compression process using the corrected reference signal; performs object detection and distance measurement and, if necessary, angle measurement of the object; and calculates the three-dimensional or two-dimensional position of the object.SELECTED DRAWING: Figure 1
Inventors:
Shinichi Takeya
Atsushi Asako
Atsushi Asako
Application Number:
JP2016226051A
Publication Date:
July 01, 2020
Filing Date:
November 21, 2016
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Infrastructure Systems & Solutions Corporation
Toshiba Infrastructure Systems & Solutions Corporation
International Classes:
G01S13/46; G01S13/28
Domestic Patent References:
| JP2016045072A | ||||
| JP2016090431A | ||||
| JP2009270827A | ||||
| JP2016161409A | ||||
| JP2007192575A | ||||
| JP2003248056A | ||||
| JP60119484A |
Foreign References:
| US20110279669 |
Attorney, Agent or Firm:
Suzue International Patent Office