hsa Class Reference

Scanning horizon sensor model. More...

#include <hsa.h>

Inheritance diagram for hsa:

Public Member Functions
	hsa (dsim_model_setup *setup)
	Constructor.
void	initialize_data ()
	Initialize outlets and output variables.
void	initialization_complete ()
	Finish initialization.
void	post_calculate ()
	Computation done after numerical integration.
Public Member Functions inherited from sensor
	sensor (dsim_model_setup *setup)
	Constructor.
void	initialize_data ()
	Initialize outlets and output variables.

Protected Attributes
dsim_variable	tLE_dsim
	Leading edge time (s)
dsim_variable	tTE_dsim
	Trailing edge time (s)
dsim_variable	dihedralAngle_dsim
	Dihedral angle (rad)
dsim_variable	planetIndex_dsim
	Outlet to read index of spice gravity planets.
Parameters
dsim_variable	uHSA_dsim
	Unit spin vector.
Outlet variables
dsim_variable	radius_dsim
	Outlet to read planet radius.
dsim_variable	positionBody_dsim
	Outlet to read positionBody matrix.
Parent variables
dsim_variable	parent_position_dsim
	Parent position.
dsim_variable	parent_velocity_dsim
	Parent velocity.
dsim_variable	parent_quaternion_dsim
	Parent quaternion.
dsim_variable	parent_rotational_velocity_dsim
	Parent rotational velocity.
Protected Attributes inherited from sensor
dsim_variable	noise1sigma_dsim
	One sigma noise value(s)
dsim_variable	bias_dsim
	Sensor bias.
dsim_variable	q_dsim
	Sensor orientation relative to the parent body.

Detailed Description

Scanning horizon sensor model.

Horizon sensor assembly. This sensor must be the child of the core spacecraft. The sensor output is double precision. The model computes the chordwidth using spherical trigonometry. The sensor model needs to know the spin vector of the sensor (or the spacecraft) and the nadir vector. If the scan is not on the earth the outputs are zero. If the scan is on the earth it outputs the leading and trailing edge times which are just the angle to the leading and trailing edges divided by the spin rate.

A real sensor can be fooled by sun reflections off of the earth but that is not modeled by this routine.

See HSAData and GetHSA from the Spacecraft Contol Toolbox. Horizon sensor outputting dihedral angle.

---

The documentation for this class was generated from the following files:

• hsa.h
• hsa.cc