LvcStateSensorModel.h

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/*
Frams state sensor model header file
 
Author: Alex Reynolds
*/
 
#ifndef MODELS_STATES_LVC_STATE_SENSOR_MODEL_H
#define MODELS_STATES_LVC_STATE_SENSOR_MODEL_H
 
#include "core/macros.h"
#include "simulation/Model.h"
#include "core/CartesianVector.hpp"
#include "utils/frameutils.hpp"
 
namespace modelspace {
 
    /**
     * @brief   LVC State Sensor Model
     * 
     * This model senses the LVC position of a chaser spacecraft relative
     * to a target spacecraft. The LVC frame defined for the purposes
     * of this model is a simplistic one based on the Dr. Schaub 
     * curvilinear relative state model, with axes as follows:
     * 
     * +Z axis directed toward the center of the Earth and defined as R_target - R_chaser
     * +Y axis perpendicular to the orbit plane with direction opposite angular momentum
     * +X axis in the direction of orbit travel and defined as R_target*theta, where 
     *         theta is the angular separation between spacecraft
    */
    class LvcStateSensorModel : public Model {
    public:
        // Model params
        //         NAME                     TYPE                    DEFAULT VALUE
        START_PARAMS
 
        END_PARAMS
 
        // Model inputs
        //         NAME                     TYPE                    DEFAULT VALUE
        START_INPUTS
            /** The position of the target spacecraft in a planet-centered inertial frame */
            SIGNAL(pos_tgt_planet__inertial,CartesianVector3D,      CartesianVector3D({0.0, 0.0, 0.0}))
            /** The velocity of the target spacecraft in a planet-centered inertial frame */
            SIGNAL(vel_tgt_planet__inertial,CartesianVector3D,      CartesianVector3D({0.0, 0.0, 0.0}))
            /** The position of the chaser spacecraft in a planet-centered inertial frame */
            SIGNAL(pos_chaser_planet__inertial,CartesianVector3D,   CartesianVector3D({0.0, 0.0, 0.0}))
        END_INPUTS
 
        // Model outputs
        //         NAME                     TYPE                    DEFAULT VALUE
        START_OUTPUTS
            /** The LVLH frame produced by this model */
            SIGNAL(pos_chaser_tgt_lvc,      CartesianVector3D,      CartesianVector3D({0.0, 0.0, 0.0}))
        END_OUTPUTS
 
        // Model-specific implementations of startup and derivative
        LvcStateSensorModel();
        LvcStateSensorModel(Model &pnt, const std::string &m_name="lvc_state_sensor");
        LvcStateSensorModel(SimulationExecutive &e, const std::string &m_name="lvc_state_sensor");
        LvcStateSensorModel(Model &pnt, int schedule_slot, const std::string &m_name="lvc_state_sensor");
        LvcStateSensorModel(SimulationExecutive &e, int schedule_slot, const std::string &m_name="lvc_state_sensor");
        virtual ~LvcStateSensorModel() {}
    protected:
        int execute();
    };
 
}
 
#endif