Title:
加速度計およびGPS受信機を用いた発射体の誘導
Document Type and Number:
Japanese Patent JP2006514258
Kind Code:
A
Abstract:
A projectile guidance system without gyros in which the projectile has an orthogonal body cordinate 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 outputing 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 for guiding the projectile to a predetermined location.
Inventors:
Ratkovic, Joseph, A
Application Number:
JP2004571469A
Publication Date:
April 27, 2006
Filing Date:
November 12, 2003
Export Citation:
Assignee:
Lytton Systems, Inc.
International Classes:
F42B15/01; G01C21/12; G01S5/14; G01S19/18; G01S19/21; G01S19/36; G01S19/49; G01S19/53
Attorney, Agent or Firm:
Kimura Mitsuru