Patent ID: 7072591
Filing Date: 2006-07-04
Classification: H04B

Abstract:
1. A method for receiving high frequency signals, comprising: transmitting a coherent beam comprising at least one signal including first and second data modulated onto the beam from a laser transmitter through atmospheric turbulence to a receiver, wherein a diameter of the beam comprising said at least one signal is less than an inner scale of an atmosphere at an aperture of said transmitter, wherein a divergence angle of the beam is selected so that it exceeds a determined turbulence induced beam deviation so that a far-field footprint of the beam remains on the receiver aperture despite the atmospheric turbulence, wherein the receiver is located at a distance from the transmitter, wherein the at least one signal, after transmission through the atmospheric turbulence, has a distorted wave-front, wherein said transmitting of said first and second data is conducted at a rate greater than one gigabit/second, and wherein each of said first and second data is associated with first and second wavelength channels, respectively, the first wavelength channel being different from the second wavelength channel; receiving said at least one distorted signal including said first and second data at a detector assembly associated with said receiver; detecting said first data using a first detector unit of the detector assembly, wherein the first detector unit is located at a first position; and detecting said second data using a second detector unit of the detector assembly, wherein the second detector unit is located at a second position that is different from said first position.