Title:
加速度計及びGPS受信器を用いた発射体案内
Document Type and Number:
Japanese Patent JP2006515055
Kind Code:
A
Abstract:
A projectile guidance system without gyros in which the projectile has an orthogonal body coordinate system. The projectile has a triax of accelerometers providing x, y and z acceleration data measured along the x, y and z axes respectively. A GPS antenna and receiver means provides onboard GPS position and velocity data in earth referenced navigational coordinates. A computer and program means stores and accesses time indexed GPS position and GPS velocity data and transforms x, y and z axis acceleration data from body to navigation coordinates. The program means is responsive to corresponding time indexed acceleration data and to GPS velocity and position data for calculating and outputting an estimated projectile roll, pitch and yaw angle via optimal smoothing techniques with respect to local level for each time index iteration of present position to a flight control system, which actuates a divert propulsion system for guiding the projectile to a predetermined location.
Inventors:
Ratkovic, Joseph, A
Brooke Stain, Alan, Jay
Buchler, Robert, Jay
Brooke Stain, Alan, Jay
Buchler, Robert, Jay
Application Number:
JP2005507652A
Publication Date:
May 18, 2006
Filing Date:
November 12, 2003
Export Citation:
Assignee:
Northrop Glueman Corporation
International Classes:
F42B15/01; F41G7/00; F41G7/34; F41G7/36; F42B10/28; G01S19/53
Attorney, Agent or Firm:
Kimura Mitsuru