Research/Patents/US 5337052
US 5337052

RANDOM BINARY MODULATED SENSOR

Assignee

Filed

Jul 20, 1989

Granted

Aug 9, 1994

Location

LANHAM MD US

Abstract

A random binary modulated sensor transmits a continuous wave r.f. signal ulated by a binary random bit pair code signal which is transmitted by an antenna. A return signal reflected from a target is received by the antenna. A receiver mixer modulates the return signal with the r.f. signal and a delay circuit delays the binary random bit pair code. A coorelator receives the modulated return signal and delayed binary random bit pair code for producing a doppler output signal. A separate r.f. path in which a portion of the modulated r.f. signal is variably attenuated and variably phase shifted is present to cancel noise signals generated by antenna mismatch in transmission.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 16, 1989

Rescinded

Dec 14, 1993

Duration

4 years, 2 months

Inventor

  • 1DIETER R. LOHRMANN

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records