Guidance control and trajectory measuring system

Abstract

Abstract 1. IN A GUIDANCE SYSTEM HAVING A TRACKING STATION FOR DETERMINING THE VELOCITY OIF AN AIRBORNE MISSILE, A TRACKING RADAR AT SAID STATION FOR TRANSMITTING SIGNALS TO SAID MISSILE, MEANS IN SAID MISSILE RESPONSIVE TO EACH OF SAID SIGNALS FOR TRANSMITTING A RESPONDING SIGNAL TO SAID TRACKING RADAR, MEANS INCLUDING SAID TRACKING RADAR RESPONSIVE TO EACH RECEIVED RESPONDING SIGNAL FOR DERIVING DATA REPRESENTING THE INSTANTANEOUS RANGE OF SAID MISSILE, MEANS FOR DIFFERENTIATING SAID RANGE DATA TO OBTAIN RADAR MISSILE VELOCITY DATA, A DOPPLER TRANSMITTER INCLUDING AN OSCILLATOR IN SAID MISSILE, MEANS AT SAID TRACKING RADAR RESPONSIVE TO SIGNALS RECEIVED FROM SAID DOPPLER TRANSMITTER FOR DERIVING DOPPLER MISSILE VELOCITY DATA, MEANS SMOOTHING BOTH SAID RADAR AND SAID DOPPLER MISSILE VELOCITY DATA DURING SUBSTANTIALLY EQUAL PREDETERMINED PERIODS OF TIME, MEANS DERIVING THE DIFFERENCE BETWEEN THE SMOOTH RADAR AND DOPPLER VELOCITY DATA TO OBTAIN ERROR VELOCITY DATA REPRESENTATIVE OF THE FREQUENCY DRIFT OF SAID DOPPLER OSCILLATOR, ANOTHER SMOOTHING MEANS HAVING AN EFFECTIVE SMOOTHING PERID SUBSTANTIALLY SHORTER THAN THE AFORESAID PREDETERMINED PERIODS TO OBTAIN SHORT TERM SMOOTHED DOPPLER MISSILE VELOCITY DATA FROM SAID FOPPLER MISSILE VELOCITY DATA, AND MEANS COMBINING SAID ERROR VELOCITY DATA AND SAID SHORT TERM SMOOTH DOPPLER VELOCITY DTA TO OBTAIN MORE PRECISE MISSILE VELOCITY.

Inventors

• 👤 Dietrich A Alsberg
• 👤 Donald R Hagner
• 👤 Erwin E Muller

Bibliographic Details