Accurate distance measurement using RF techniques

Details Accurate distance measurement using RF techniques Accurate distance measurement using RF techniques

2005-02-22

2005-02-22

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

Reexamination Certificate

active

06859761

ABSTRACT:
A system, apparatus, and method for determining the distance between two objects using an indirect propagation delay measurement is disclosed. A frequency hopping scheme (such as the Bluetooth™ technology) is used to measure the relative phase offset of the received signal between the various frequencies. For a given distance between the objects, the phase offset vs. frequency curve is a straight line with the slope dependent upon the measured distance. After the phase of the received signals is detected, the data is plotted on a curve and the slope is calculated.

REFERENCES:
patent: 3619058 (1971-11-01), Hewlett
patent: 3681695 (1972-08-01), Cease et al.
patent: 3778159 (1973-12-01), Hines et al.
patent: 3779645 (1973-12-01), Nakazawa et al.
patent: 4017859 (1977-04-01), Medwin
patent: 4328499 (1982-05-01), Anderson et al.
patent: 4433335 (1984-02-01), Wind
patent: 4633411 (1986-12-01), Bliss et al.
patent: 4804961 (1989-02-01), Hane
patent: 4851851 (1989-07-01), Hane
patent: 5082364 (1992-01-01), Russell
patent: 5099248 (1992-03-01), Brommer
patent: 5136298 (1992-08-01), Williams
patent: 5170172 (1992-12-01), Weinstein
patent: 5173709 (1992-12-01), Lauro et al.
patent: 5298904 (1994-03-01), Olich
patent: 5428439 (1995-06-01), Parker et al.
patent: 5448248 (1995-09-01), Anttila
patent: 5481503 (1996-01-01), Kuhn et al.
patent: 5596330 (1997-01-01), Yokev et al.
patent: 5687196 (1997-11-01), Proctor, Jr. et al.
patent: 5694133 (1997-12-01), Ghose
patent: 5724047 (1998-03-01), Lioio et al.
patent: 5745224 (1998-04-01), Oda et al.
patent: 5767409 (1998-06-01), Yamaguchi
patent: 5781282 (1998-07-01), Oda et al.
patent: 5784339 (1998-07-01), Woodsum et al.
patent: 5815117 (1998-09-01), Kolanek
patent: 5828693 (1998-10-01), Mays et al.
patent: 6175725 (2001-01-01), Auber
patent: 20020015423 (2002-02-01), Rakib et al.
patent: 0 926 510 (1999-06-01), None
patent: WO 256673 (1996-08-01), None
R.J. Palmer, Test result of pricise RF posiion system, 6/89, CH2789 IEEE, p. 151-155.*
The Official Bluetooth Website, 1 page. Internet source. Apr. 10, 2000.
Designing Cableless Devices with the Bluetooth Specification, 8 pages. Internet source. Apr. 10, 2000.
R.J. Palmer, “Test Results of a Precise, Short Range, RF Navigational/Positional System,” IEEE Vehicle Navigation and Information Systems Conference (VNIS '89) (1st: 1989: Toronto), compiled and edited by D.H.M. Reekie, E.R. Case and J. Tsai, pp. 151-155.

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