Appeal No. 1998-1341
Application 08/358,792
a transmitter disposed at said target for broadcasting a
communication signal in response to an initiation event;
said first mobile tracking station further including a position
determination unit utilizing a navigation reference external of said region for
determining a first instantaneous position indicative of the position of said
first mobile tracking station while transiting the vicinity of the target, a bearing
determination unit including a receiver for receiving the communication
signal from said target and for determining a first target bearing indicative of
the relative direction to said target from said first mobile tracking station on
the basis of said communication signal, and a transmitter unit for transmitting
said first target bearing information and said first instantaneous position of
the first tracking station;
said second mobile tracking station further including a receiver for
receiving said first target bearing and said first instantaneous position
transmitted by said first mobile tracking station, a position determination unit
utilizing a navigation reference external of said region for determining a
second instantaneous position indicative of the position of said second
mobile tracking station while transiting the vicinity of the target, a second
bearing determination unit adapted for determining a second target bearing
indicative of the relative direction to said target from said second tracking
station on the basis of said communication signal transmitted from said
target transmitter; and
a processor for analyzing said first and second instantaneous
positions of said first and second mobile tracking stations and said first and
second target bearings thereby to ascertain by triangulation the exact
position of said target.
The Examiner relies upon the following references:
Angeloni 3,828,306 Aug. 06, 1974
Haemmig 3,984,807 Oct. 05, 1976
Reagan 4,177,466 Dec. 04, 1979
Gray et al. (Gray) 5,003,317 Mar. 26, 1991
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007