DR. ROBERT LEWIS STEIN, D.M.D.
Dentist at Howells Rd, Bayshore, NY

License number

New York 040901

Professional information

Dr. Robert L Stein, Bay Shore NY - DMD (Doctor of Dental Medicine)

Specialties:

Dentistry

Address:

94 Howells Rd, Bay Shore 11706
(631) 665-3439 (Phone)

Languages:

English

Monopulse Reply Extractor For Ssr Navigation Systems

US Patent:

5220329, Jun 15, 1993

Filed:

Jul 30, 1991

Appl. No.:

7/738045

Inventors:

Charles E. Verbeke - Huntington Station NY
Robert H. Stein - Merrick NY

Assignee:

Cardion, Inc. - Woodbury NY

International Classification:

G01S 1376, G01S 1380

US Classification:

342 40

Abstract:

An SSR reply decoding system for separating pulse codes of a series of closely-spaced or overlapping SSR replies is disclosed. A delay line is connected to receive pulses representing the leading edge of each SSR reply code pulse. The delay line has a length corresponding to at least two bracket lengths of an SSR reply. A bracket decoder is connected to respective taps of the delay line for determining the beginning and end of a first SSR reply. A phantom reply detector is connected to the remaining taps for inhibiting the bracket decoder when two replies are represented by pulses in the delay lines, one of the replies having a pulse space from the pulse of another reply equal to a framing pulse period for an SSR reply. The phantom reply detector therefore inhibits the detection of phantom replies. As a discriminate for determining when pulses having the spacing of a framing period belong to different replies, azimuth data is provided which will permit discrimination of these phantom conditions.