Distance calculating method and system

Details Distance calculating method and system Distance calculating method and system

2007-09-18

2007-09-18

Gregory, Bernarr E. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Determining distance

With frequency modulation

C342S070000, C342S118000, C342S195000, C342S196000

Reexamination Certificate

active

10690843

ABSTRACT:
In a system, a frequency-modulating unit is configured to frequency-modulate a radar wave signal within a predetermined frequency modulation range from bottom to top so that a frequency of the frequency-modulated radar wave changes in time. The rate of frequency change of the radar wave signal in time is set to F0/Tf. The F0 represents a center frequency in the frequency modulation range. The Tf represents the predetermined constant time. A mixing unit is configured to mix the transmitted frequency-modulated radar wave signal and the reflection signal to obtain a beat signal. The beat signal is based on a frequency difference between a frequency of the transmitted radar wave signal and that of the reflection signal. A sweeping unit is configured to sweep the beat signal within the frequency modulation range from one of the bottom and the top to the other thereof to obtain a frequency component of the beat signal. An obtaining unit is configured to obtain the prediction distance based on a relationship between the frequency component of the beat signal and the prediction distance.

REFERENCES:
patent: 5619208 (1997-04-01), Tamatsu et al.
patent: 5625362 (1997-04-01), Richardson
patent: 5920280 (1999-07-01), Okada et al.
patent: 5963509 (1999-10-01), Lindmuller et al.
patent: 6788247 (2004-09-01), Mitsumoto et al.
patent: 8-94749 (1996-04-01), None
patent: 9-90026 (1997-04-01), None
patent: 11-271432 (1999-10-01), None
patent: WO 02/067010 (2002-08-01), None
Notification of reasons for rejection in corresponding Japanese application No. 2002-311386 dated Mar. 13, 2007 (copy and translation enclosed).

Affiliated with

Also associated with

Rating

Distance calculating method and system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distance calculating method and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distance calculating method and system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3758177