Pulse or digital communications – Repeaters – Testing
Patent
1992-01-16
1993-06-22
Swann, Tod R.
Pulse or digital communications
Repeaters
Testing
342357, 455 121, H04K 100
Patent
active
052220990
ABSTRACT:
A spread spectrum signal receiving apparatus comprising: a radio frequency processing circuit for converting a spread spectrum signal into an intermediate frequency signal; a binary encoder for encoding the intermediate frequency signal; a pseudo-random noise code generator; a code driver for controlling the phase and the chip speed of the output of the code generator; a first multiplier for multiplying the binary signal by the output of the code generator; a numerical controlled oscillator for outputting first and second carrier signals; second and third multipliers for multiplying the output signal of the first multiplier respectively by the first and second carrier signals; first and second low-pass filters supplied with the output signals of the second and third multipliers respectively; and a microcomputer having functions to produce signals for controlling the numerical controlled oscillator, and functions to produce signals for controlling the code driver.
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Record of the IEEE Position Location Symposium 1988, Nov. 29, 1988, Kissemmee, Fla., USA; pp. 153-164. Aggarwal: "A state of the art military GPS receiver".
Hori Katsuya
Morinaga Eiichiro
Yamatani Wataru
Yoshida Tadao
Shaw, Jr. Philip M.
Sony Corporation
Swann Tod R.
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