×

Radar apparatus

  • US 20030016163A1
  • Filed: 07/11/2002
  • Published: 01/23/2003
  • Est. Priority Date: 07/11/2001
  • Status: Active Grant
First Claim
Patent Images

1. A radar apparatus for performing frequency modulation of a high-frequency signal, transmitting the frequency-modulated signal, and receiving a reflected radio wave to detect a target, the radar apparatus comprising:

  • a high frequency generation section for generating the high-frequency signal;

    a modulation signal generation section for generating and giving a modulation signal to the high frequency generation section to modulate the high frequency signal;

    a mixing section for mixing the high-frequency signal and the reception signal of the reflected radio wave; and

    a signal processing section for controlling the modulation signal generation section so as to give a modulation signal for detection changing among a plurality of predetermined signal levels and retained for a predetermined time for each signal level to the high frequency generation section, detecting frequency of a differential signal between the high-frequency signal and the reception signal, inputted from the mixing section, and detecting a frequency modulation characteristic of the high frequency generation section based on the relationship between a signal level of the modulation signal for detection and the frequency of the differential signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×