Estimation Techniques

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When working with FreeFlyer's Orbit Determination system, there are four available estimation techniques: Batch Least Squares, the Extended Kalman Filter, the Square Root Information Filter, and the Unscented Kalman Filter. The first steps to creating your OD system are to choose one of these techniques and configure its basic options. You can learn more about this by following these links:


Setting up a Batch Least Squares Estimator

Setting up an Extended Kalman Filter

Setting up a Square Root Information Filter

Setting up an Unscented Kalman Filter

Setting up a Smoother


Once this initial setup is complete, continue configuring your OD system by:


Defining the A Priori States

Defining the Measurement Model

Defining Thrust Events

Defining the Properties to Estimate

Including Tracking Data