发明名称 |
Method of and apparatus for transmitting clandestine radio signals |
摘要 |
Clandestine signals are transmitted by using a surface wave acoustic device to disperse the spectrum of a pulse-modulated CW carrier. The dispersed signal is itself modulated and then transmitted to a remote location, at low level. At the remote location, an acoustic device of conjugate characteristics is used to recover the dispersed signal from out of the background noise.
|
申请公布号 |
US4170757(A) |
申请公布日期 |
1979.10.09 |
申请号 |
US19770865826 |
申请日期 |
1977.12.30 |
申请人 |
U S OF AMERICA ARMY SECRETARY |
发明人 |
DE SANTIS, CHARLES M;IKRATH, KURT;SKUDERA, WILLIAM J |
分类号 |
H04B5/00;H04K1/00;(IPC1-7):H04K1/00;H04B15/00 |
主分类号 |
H04B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|