Parameter Estimation via Nonlinear Differential Correction Least Square Method

摘要

Results of application of nonlinear least squares parameter estimation (NLSPE)method to flight data are discussed. The method is based on a differential correction technique and the partial differentiation is performed numerically by using finite difference method. It can be used for estimating of initial states and parameters of a nonlinear dynamic model. It is a batch-iterative procedure and can be regarded as complementary to other nonlinear parameter estimation procedures. It can also be used as a start-up procedure to estimate initial parameter values which are required for other methods, and also as a regression procedure required in estimation before modelling methodology.