| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy of estimating an error in an imaging direction in an imaging apparatus of a satellite.SOLUTION: An observation matrix calculating part 32 calculates an observation matrix when a deviation between an imaging image and a reference image is represented by a sum of the product multiplying an estimation parameter by an observation matrix and an observation noise. An observation characteristic matrix calculating part 33 calculates an observation characteristic matrix multiplying a transposed matrix of the observation matrix, an inverse matrix of a covariance matrix of the observation noise, and the observation matrix. An eigenvalue calculating part 34 calculates an eigenvalue diagonal matrix of the observation characteristic matrix and an eigenvector matrix. A selection part 35 selects a limit eigenvalue by a standard determined in the descending order from the eigenvalue of the eigenvalue diagonal matrix. The limit part 36 generates a limit eigenvector matrix corresponding to the limit eigenvalue. An estimation part 37 estimates the parameter converted into a primary component space which reduces the number of estimation parameters corresponding to the limit eigenvalue using a least square method. A conversion part 38 converts an estimation result of the parameter into the estimation result for the estimation parameter of an original space. |
