Horology: time measuring systems or devices – Combined with disparate device
Patent
1994-03-14
1995-11-21
Miska, Vit W.
Horology: time measuring systems or devices
Combined with disparate device
368156, 342450, 342463, G04B 4700, G04F 500, G01S 302
Patent
active
054694094
ABSTRACT:
Timing signals are transmitted from reference transmitters through antenna/receivers (antenna preamplifier nodes) to collector nodes (C-Nodes) and to a central computer. The times of arrival of the signals at the various C-Nodes are measured by the C-Nodes, relative to each C-Node's clock. The time of arrival signals at each C-Node must be based upon a common time reference to be useful for positioning. Therefore, the central computer determines the offsets of clocks relative to a selected reference C-Node clock. The time of arrival signals are then calibrated against one another and used to adjust the time of arrival signals so that all time-of-arrivals are relative to the same reference and can be used for position determination and the clocks of the collection nodes are effectively synchronized.
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Anderson Neal R.
Erickson Bart J.
Leung Keith
Bogacz Frank J.
Miska Vit W.
Motorola Inc.
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