Patent ID: 11914061
Assignee: ELTA SYSTEMS LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. The system of claim 1, configured to
obtain measured data indicative of a signal Sn informative of the signal S and received from the signal source by each of a number of at least two receivers {Rcn} during a time interval Δti of a dwell i,
obtain position data indicative of positions {Rn} of said at least two receivers during said time interval Δti;
apply a processing to determine differential phase differences ΔΔφim,n which represents a difference between accumulated phases, Δφim and Δφin, of the signals, Sm and Sn, received by at least one pair {m,n} of the receivers, Rcm and Rcn during time interval Δti,
apply a processing to determine a first estimate of the physical location of said signal source based on position data and said differential phase differences ΔΔφim,n of said at least one pair {m,n} of receivers, said first estimate being associated with an accuracy area,
apply a processing to determine data representative of difference in times of arrival of modulation patterns of the signals Sm, Sn received by said at least one pair {m,n} of receivers within said dwell, wherein said data comprise an ambiguity,
for said at least one pair {m,n} of receivers, and for a plurality of said dwells, using at least said data representative of difference in times of arrival of the modulation patterns of the signals, said differential phase differences ΔΔφim,n, and said accuracy area to determine one or more second estimates êSrck of the physical location of the signal source, wherein at least some of these one or more second estimates êSrck of the physical location of the signal source are located within the accuracy area.