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GPS Class Reference

Represents the Global Positioning System on-board the spacecraft. An Orbit. More...

#include <GPS.h>

List of all members.

Public Methods
GPStime	time () const
	GPS synchronized time for the satellite. More...
double	lat () const
	present latitude. More...
double	lon () const
	present longitude. More...
double	pitch () const
	present 'pitch' angle in N-S direction (roll around x-axis). More...
double	yaw () const
	present 'yaw' angle - (rotate around z-axis). More...
double	roll () const
	present 'roll' andle in E-W direction (roll around y-axis). More...
double	phase () const
	get the current phase of the orbit. More...
const Orbit*	orbit () const
	access to the orbit (for computation only). More...
Coords	state () const
	current state of the GPS system. More...
double	expansion () const
	expansion of the current orbit. More...
GPStime	sampleintvl () const
	sample interval for random orbit distribution. More...
double	ascendingLon () const
	return the orbit's ascending longitude. More...
std::pair<double,double>	rotateAngles ()
	access m_rotangles. More...
void	orbit ( Orbit* )
	set a specific Orbit object for lat/lon calculations. More...
void	pass ( double )
	pass a specific amount of time. More...
void	phase ( double )
	set the current phase of the orbit. More...
void	expansion ( double )
	set the expansion factor for the orbit (-1) = random. More...
void	synch ()
	synchronize w. scheduler. More...
void	sampleintvl ( GPStime )
	set the sample interval. More...
void	ascendingLon (double)
	special to set the ascending longitude. More...
void	rotateAngles (std::pair<double,double> coords)
	set m_rotangles. More...
void	printOn (std::ostream& out) const
	print time & position. More...
void	notifyObservers ()
Subject&	notification ()
std::pair<double,double>	galToGlast (std::pair<double,double> galcoords)
	transformation fron galactic coordinates to GLAST coordinates. More...
Static Public Methods
GPS*	instance ()
void	kill ()
Protected Methods
	GPS ()
virtual	~GPS ()
void	pitch ( double )
void	yaw ( double )
void	roll ( double )
void	lat ( double )
void	lon ( double )
void	time ( GPStime )
Orbit*	orbit ()
GPStime	orbittime () const
void	orbittime ( GPStime )
void	setState ( const GPS::Coords& )
Protected Attributes
std::pair<double,double>	m_rotangles
Private Attributes
Orbit*	m_orbit
double	m_expansion
GPStime	m_time
GPStime	m_orbittime
double	m_sampleintvl
Subject	m_notification
Static Private Attributes
GPS*	s_instance = 0
Friends
class	FluxGenerator

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Detailed Description

Represents the Global Positioning System on-board the spacecraft. An Orbit.

object is used to compute the spacecraft's position and pointing characteristics. Time is tracked through this object, and synchronized with the Scheduler for discrete event simulation. An expansion factor is provided to allow for acceleration or randomization of the orbit. If the expansion factor is negative, then the position of the spacecraft is chosen as a random distribution over an orbit. Otherwise, the expansion factor represents an acceleration of the spacecraft's orbit. Ie. an expansion factor of 2 would reduce the orbit period of the spacecraft by 1/2.

Definition at line 34 of file GPS.h.

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Constructor & Destructor Documentation

GPS::GPS ( ) [protected]

Definition at line 44 of file GPS.cxx. Referenced by instance().

GPS::~GPS ( ) [protected, virtual]

Definition at line 62 of file GPS.cxx.

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Member Function Documentation

void GPS::ascendingLon ( double lon )

special to set the ascending longitude. Definition at line 247 of file GPS.cxx.

double GPS::ascendingLon ( ) const

return the orbit's ascending longitude. Definition at line 251 of file GPS.cxx. Referenced by FluxMgr::setGlastPosition().

void GPS::expansion ( double e )

set the expansion factor for the orbit (-1) = random. Definition at line 169 of file GPS.cxx.

double GPS::expansion ( ) const

expansion of the current orbit. Definition at line 142 of file GPS.cxx. Referenced by FluxMgr::setExpansion(), and synch().

std::pair< double,double > GPS::galToGlast ( std::pair< double,double > galcoords )

transformation fron galactic coordinates to GLAST coordinates. Definition at line 265 of file GPS.cxx. Referenced by FluxSource::getGalacticDir().

GPS * GPS::instance ( ) [static]

Definition at line 204 of file GPS.cxx. Referenced by HeSpectrum::askGPS(), GalElSpectrum::askGPS(), CHIMESpectrum::askGPS(), AlbedoPSpectrum::askGPS(), TrappedProtonSpectrum::calculate_rate(), HeSpectrum::calculate_rate(), GalElSpectrum::calculate_rate(), CHIMESpectrum::calculate_rate(), AlbedoPSpectrum::calculate_rate(), FluxSource::getGalacticDir(), HeSpectrum::init(), GalElSpectrum::init(), CHIMESpectrum::init(), AlbedoPSpectrum::init(), FluxMgr::location(), FluxMgr::pass(), sampleintvl(), FluxMgr::setExpansion(), FluxMgr::setGlastAngles(), FluxMgr::setGlastPosition(), and FluxMgr::synch().

void GPS::kill ( ) [static]

Definition at line 207 of file GPS.cxx.

void GPS::lat ( double l ) [protected]

Definition at line 189 of file GPS.cxx.

double GPS::lat ( ) const

present latitude. Definition at line 121 of file GPS.cxx. Referenced by galToGlast(), FluxMgr::location(), printOn(), and state().

void GPS::lon ( double l ) [protected]

Definition at line 194 of file GPS.cxx.

double GPS::lon ( ) const

present longitude. Definition at line 126 of file GPS.cxx. Referenced by HeSpectrum::askGPS(), GalElSpectrum::askGPS(), CHIMESpectrum::askGPS(), AlbedoPSpectrum::askGPS(), TrappedProtonSpectrum::calculate_rate(), HeSpectrum::calculate_rate(), GalElSpectrum::calculate_rate(), CHIMESpectrum::calculate_rate(), galToGlast(), FluxMgr::location(), printOn(), and state().

Subject & GPS::notification ( ) [inline]

Definition at line 108 of file GPS.h. Referenced by HeSpectrum::init(), GalElSpectrum::init(), CHIMESpectrum::init(), and AlbedoPSpectrum::init().

void GPS::notifyObservers ( ) [inline]

Definition at line 107 of file GPS.h. Referenced by synch().

Orbit * GPS::orbit ( ) [protected]

Definition at line 86 of file GPS.cxx.

void GPS::orbit ( Orbit * o )

set a specific Orbit object for lat/lon calculations. Definition at line 147 of file GPS.cxx.

const Orbit * GPS::orbit ( ) const

access to the orbit (for computation only). Definition at line 81 of file GPS.cxx. Referenced by lat(), lon(), phase(), pitch(), roll(), state(), synch(), and yaw().

void GPS::orbittime ( GPStime t ) [protected]

Definition at line 218 of file GPS.cxx.

GPStime GPS::orbittime ( ) const [protected]

Definition at line 223 of file GPS.cxx. Referenced by galToGlast(), lat(), lon(), phase(), pitch(), roll(), synch(), and yaw().

void GPS::pass ( double t )

pass a specific amount of time. Definition at line 155 of file GPS.cxx. Referenced by FluxMgr::pass().

void GPS::phase ( double p )

set the current phase of the orbit. Definition at line 162 of file GPS.cxx.

double GPS::phase ( ) const

get the current phase of the orbit. Definition at line 136 of file GPS.cxx.

void GPS::pitch ( double p ) [protected]

Definition at line 174 of file GPS.cxx.

double GPS::pitch ( ) const

present 'pitch' angle in N-S direction (roll around x-axis). Definition at line 66 of file GPS.cxx. Referenced by state().

void GPS::printOn ( std::ostream & out ) const

print time & position. Definition at line 255 of file GPS.cxx.

void GPS::roll ( double r ) [protected]

Definition at line 184 of file GPS.cxx.

double GPS::roll ( ) const

present 'roll' andle in E-W direction (roll around y-axis). Definition at line 76 of file GPS.cxx. Referenced by state().

void GPS::rotateAngles ( std::pair< double,double > coords )

set m_rotangles. Definition at line 320 of file GPS.cxx.

std::pair< double,double > GPS::rotateAngles ( )

access m_rotangles. Definition at line 314 of file GPS.cxx. Referenced by FluxMgr::setGlastAngles().

void GPS::sampleintvl ( GPStime s )

set the sample interval. Definition at line 228 of file GPS.cxx.

GPStime GPS::sampleintvl ( ) const

sample interval for random orbit distribution. Definition at line 233 of file GPS.cxx.

void GPS::setState ( const GPS::Coords & c ) [protected]

Definition at line 238 of file GPS.cxx.

GPS::Coords GPS::state ( ) const

current state of the GPS system. Definition at line 213 of file GPS.cxx.

void GPS::synch ( )

synchronize w. scheduler. Definition at line 91 of file GPS.cxx. Referenced by FluxMgr::synch().

void GPS::time ( GPStime t ) [protected]

Definition at line 199 of file GPS.cxx.

GPStime GPS::time ( ) const

GPS synchronized time for the satellite. Definition at line 131 of file GPS.cxx. Referenced by pass(), phase(), printOn(), setState(), state(), and synch().

void GPS::yaw ( double y ) [protected]

Definition at line 179 of file GPS.cxx.

double GPS::yaw ( ) const

present 'yaw' angle - (rotate around z-axis). Definition at line 71 of file GPS.cxx. Referenced by state().

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Friends And Related Function Documentation

class FluxGenerator [friend]

Definition at line 141 of file GPS.h.

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Member Data Documentation

double GPS::m_expansion [private]

Definition at line 147 of file GPS.h.

Subject GPS::m_notification [private]

Definition at line 153 of file GPS.h.

Orbit * GPS::m_orbit [private]

Definition at line 146 of file GPS.h.

GPStime GPS::m_orbittime [private]

Definition at line 149 of file GPS.h.

std::pair< double,double > GPS::m_rotangles [protected]

Definition at line 135 of file GPS.h.

double GPS::m_sampleintvl [private]

Definition at line 150 of file GPS.h.

GPStime GPS::m_time [private]

Definition at line 148 of file GPS.h.

GPS * GPS::s_instance = 0 [static, private]

Definition at line 42 of file GPS.cxx.

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

• GPS.h
• GPS.cxx

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