US 7,548,195 B2
	Waveform generation method, radar device, and oscillator for radar device
Shigeho Inatsune, Tokyo (Japan)
Assigned to Mitsubishi Denki Kabushiki Kaisha, Tokyo (Japan)
Appl. No. 10/572,964 PCT Filed Feb. 23, 2005, PCT No. PCT/JP2005/002911 § 371(c)(1), (2), (4) Date Mar. 21, 2006, PCT Pub. No. WO2005/081407, PCT Pub. Date Sep. 01, 2005.
Claims priority of application No. 2004-049586 (JP), filed on Feb. 25, 2004.
Prior Publication US 2007/0103354 A1, May 10, 2007
Int. Cl. G01S 7/282 (2006.01)

U.S. Cl. 342—200  [342/201; 342/202; 342/203; 342/175; 342/100]

5 Claims

3. Radar device characterized in that the radar device includes a storage means for storing a timing at which a D/A-converted voltage in D/A conversion data obtained by varying input data into a D/A converter by a minimum conversion unit or by a unit obtained by multiplying the minimum conversion unit by an integer and a voltage of a desired waveform varying with time series become substantially equal to each other, a waveform storage means for registering the input data at the timing, a time control means for giving the input data to the D/A converter at the timing, and an oscillation means for varying an oscillation frequency in accordance with a variation of the D/A-converted voltage.