The results show that the weight may significantly affect the accuracy of the combined determination of satellite orbit, and the weighting method is concerned not only in the precision of tracking data, but also in their num.

Application of screen imitating in the path synthesis of plane linkage mechanism;

Research on Computer-Aided Creative Design Method Based on Planar Mechanism Path Synthesis;

A mechanism for performing path synthesis is designed to guide one point on a moving rigid body such that it passes through a specified sequence of points on a path.

In this paper, the synthesis of path generation of the geared five bar mechanism is studied.

After that,based on the task of path generation for the path synthesis,the simulation mechanisms of accurate path generator with Geared five-bar mechanism are developed from the primary simulation mechanism.

Development of Combined Orbit Determination Technology and Its Application in LEO POD Based on the Double-star Positioning System;

Aiming at multi-source measure data fusion process of low earth orbit (LEO) combined orbit determination (COD) based on bi-satellite positioning system (BPS), two sorts of multi-source data fusion measure models based on independent same distribution and correlation of measure noises were constructed, and a method based on matrix Cholesky decomposition and noises de-correlation was put forward.

A deviation correction method of parameter estimation value to combined orbit determination (COD) nonlinear regression model based on an iterative algorithm was put forward by deducing the deviation and mean square error expres-sions of COD model estimation value from theoretical angle.