spec_attitude_observer.md

Specification for AttitudeObserver class

1. Overview

1. functions

• The AttitudeObserver class simulates an ideal attitude observer.
• The AttitudeObserver class observes attitude quaternion with noise.

2. files

• attitude_observer.cpp, attitude_observer.hpp: Definitions and declarations of the class
• attitude_observer.ini: Initialization file
• plot_attitude_observer.py: An example of a Python script to plot attitude observer output

3. how to use

• Set the parameters in attitude_observer.ini.
  • error_angle_standard_deviation_deg: Standard deviation of error angle
  • Other parameters
    • Parameters for the Component class
• Create an instance by using the initialization function InitializeAttitudeObserver
• Use the GetQuaternion_i2b function to get magnetic field information.

2. Explanation of Algorithm

1. MainRoutine

1. Overview

• The MainRoutine function adds the noise to the true attitude quaternion.

2. Inputs and Outputs

• NA

3. Algorithm

• NA

3. Results of verifications

• The output result obtained by the default initial settings.
  • The figure is generated by the Python script.