Title:
OBJECT TRACKING SYSTEM
Document Type and Number:
Japanese Patent JPH0228704
Kind Code:
A
Abstract:
PURPOSE:To eliminate previous information so as to improve accuracy by deciding an acceleration motion through the use of the distribution of enovation and evaluating an acceleration component through the use of a maximum likelihood estimation method. CONSTITUTION:An acceleration detection means 6 decides the presence or absence of the acceleration of a shifting object through the use of an observation vector yk transmitted from an internal state quantity prediction means 5, the enovation upsilonk and a thresholdlambdak, resets the prediction state vector LAMBDA xk/k-1 of the internal quantity and the vector upsilonk, and transmits them to an internal state quantity estimation means 8. The means 8 obtains the estimation state vectorLAMBDA xk/x of the internal state quantity in a time (k) by the maximum likelihood estimation method in which an instant likelihood function is used with respect to the enovation by using said result and plays the vector in a display means 9. Since the acceleration detection means detects the acceleration by using the distribution of the enovation, previous information with respect to the acceleration motion is eliminated. Since the internal state quantity is estimated by the maximum likelihood estimation method in which the instant likelihood with respect to the enovation in used, the acceleration accompanied by time fluctuation can precisely by estimated.
More Like This:
Inventors:
OKITA YOSHIO
Application Number:
JP17839088A
Publication Date:
January 30, 1990
Filing Date:
July 18, 1988
Export Citation:
Assignee:
OKI ELECTRIC IND CO LTD
International Classes:
G01S3/802; G01S13/66; G05B13/02; G01S15/66; G05B13/00; G05D1/12; (IPC1-7): G05B13/00; G05D1/12
Attorney, Agent or Firm:
Kakimoto Kyosei
Next Patent: JPH0228705