公开(公告)号：US3821646A

公开(公告)日：1974-06-28

申请号：US22957772

申请日：1972-02-25

Applicant: RAYTHEON CO

Inventor： BICKFORD W ,  ROWLAND H ,  TSAO C

IPC: H04B7/22 ,  H04B7/02

CPC classification number: H04B7/22

Abstract: A scatter communication system which utilizes a scattering medium whose time variations of index of refraction within the medium are random and slow compared to the characteristic times of the radiation and the propagation time. The system is designed to provide a means of eliminating the deep fading from the mean value of signal strength encountered in a tropospheric and ionospheric scatter communication systems. By very rapidly scanning the transmitting antenna beam at a rate at least equal to twice the highest information frequency on the carrier, short term fading on the order of less than one minute is eliminated.