| 主权项 |
1. A system for locating an object, comprising:
a transmitter for transmitting a location signal, x(t); a plurality of repositionable receivers, where n is the number of receivers, for positioning about a region in which the transmitter is located, each repositionable receiver including a transceiver for receiving the location signal and for transmitting data representative of the received location signal, Rn(t), as it is received by the nth respective receiver; and a base station including a transceiver for receiving the representative data transmitted by at least a plurality of the repositionable receivers and a processor for collectively processing the representative data based on a plurality of potential transmitter locations, including reflector locations, to identify at least one of the potential transmitter locations as a likely transmitter location, wherein said processor is configured to collectively process the representative data by: creating a matrix of range rephased signals, R′n(t), for the plurality of location signals received at the respective repositionable receivers for each of the plurality of potential transmitter locations such that R′n(t)=Rn(t+{circumflex over (t)}n), where {circumflex over (t)}n is the signal delay expected if the transmitter were in fact located at a potential location; and identifying at least one potential location of the plurality of potential locations as the likely transmitter location, based on the range rephased signals in the matrix being closest to frequency independent and therefore varying only by a complex scalar factor associated with each respective receiver. |
