Stephen T Cross

US Patent:

54426545, Aug 15, 1995

Filed:

Aug 6, 1993

Appl. No.:

8/103010

Inventors:

Stephen T. Cross - Morrison CO

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H04B 346

US Classification:

375224

Abstract:

Telemetry signals from missiles experience extreme phase distortion during interstage separation events. A phase modulation measurement system can calculate the steady state phase deviation of a biphase telemetry transmitter using: a telemetry receiver, a demodulator, a digitizer oscilloscope and a computer. The telemetry receiver receives and down converts phase modulated telemetry signals into intermediate frequency signals which are demodulated by the demodulator. After the digitizing oscilloscope digitizes the demodulated signals, the computer calculates the phase deviation.