Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2008-04-08
2008-04-08
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C324S067000, C324S207110, C324S207170, C324S207220, C324S207260, C324S237000, C324S243000, C324S326000, C324S327000, C324S328000, C324S329000
Reexamination Certificate
active
11100696
ABSTRACT:
A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in the measurement set. A numerical optimization step is introduced to deduce the positions and currents of each of several cables, of which one is the targeted cable and the others are termed bleedover cables. Furthermore, some embodiments of the method accounts for practical problems that exist in the field that relate to reliable estimation of cable positions, like the phase transfer function between transmitter and receiver, the estimation of confidence bounds for each estimate, and the rejection of false positive locates due to the presence of noise and interference.
REFERENCES:
patent: 6140819 (2000-10-01), Peterman et al.
patent: 2 220 071 (1998-12-01), None
Gudmundsson Thorkell
Lindstrom Niklas
Överby Johan
Polak Stevan
Waite Jim
Barlow John
Kundu Sujoy
Metrotech Corporation, Inc.
LandOfFree
Precise location of buried metallic pipes and cables in the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Precise location of buried metallic pipes and cables in the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precise location of buried metallic pipes and cables in the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3938922