Template specialisation of fit function of acoustic model based on linear approximation. More...

#include <JKatoomba_t.hh>

Inheritance diagram for JACOUSTICS::JKatoomba< JEstimator >:

Public Member Functions
	JKatoomba (const JGeometry &geometry, const JSoundVelocity &velocity, const int option)
	Constructor The option corresponds to the use of fit parameters in the model of the detector geometry. More...

template<class T >
JModel &	operator() (T __begin, T __end) const
	Get start values of string parameters. More...

Static Public Attributes
static JMatrix_t	MATRIX_INVERSION = SVD_t
	Matrix inversion. More...

Private Member Functions
template<class T , class JMatrixNS_t >
JModel &	evaluate (T __begin, T __end, JMatrixNS_t &V) const
	Get start values of string parameters. More...

Private Attributes
JMatrixNS	ldu

TMatrixDS	svd

JMATH::JVectorND	Y

JModel	value

Detailed Description

Template specialisation of fit function of acoustic model based on linear approximation.

Definition at line 437 of file JKatoomba_t.hh.

Constructor & Destructor Documentation

◆ JKatoomba()

JACOUSTICS::JKatoomba< JEstimator >::JKatoomba	(	const JGeometry &	geometry,
		const JSoundVelocity &	velocity,
		const int	option
	)

inline

Constructor The option corresponds to the use of fit parameters in the model of the detector geometry.

A negative implies that all strings in the detector use common fit parameters.

Parameters

geometry	detector geometry
velocity	sound velocity
option	option

Definition at line 449 of file JKatoomba_t.hh.

                                             :
       JKatoomba<>(geometry, velocity, option)
     {};

Member Function Documentation

◆ operator()()

template<class T >

JModel& JACOUSTICS::JKatoomba< JEstimator >::operator()	(	T	__begin,
		T	__end
	)		const

inline

Get start values of string parameters.

Note that this method may throw an exception.

Parameters

__begin	begin of hits
__end	end of hits

Returns: model

Definition at line 465 of file JKatoomba_t.hh.

     {
       switch (MATRIX_INVERSION) {
  
       case SVD_t:
         return this->evaluate(__begin, __end, svd);
  
       case LDU_t:
         return this->evaluate(__begin, __end, ldu);
  
       default:
         THROW(JValueOutOfRange, "Invalid matrix type " << MATRIX_INVERSION);
       }
     }

◆ evaluate()

template<class T , class JMatrixNS_t >

JModel& JACOUSTICS::JKatoomba< JEstimator >::evaluate	(	T	__begin,
		T	__end,
		JMatrixNS_t &	V
	)		const

inlineprivate

Get start values of string parameters.

Note that this method may throw an exception.

Parameters

__begin	begin of hits
__end	end of hits
V	matrix

Returns: model

Definition at line 499 of file JKatoomba_t.hh.

     {
       using namespace std;
       using namespace JPP;
       using namespace JGEOMETRY;
  
       value = JModel(__begin, __end);                 // set up global model according data
  
       if (this->option == JMODEL::FIT_EMITTERS_ONLY_t)
         value.setOption(JMODEL::FIT_EMITTERS_ONLY_t);
       else
         value.setOption(JMODEL::FIT_EMITTERS_AND_STRINGS_1st_ORDER_t);
  
       H_t H;                                          // H-equation as per hit
       I_t i;                                          // indices of H-equation in global model 
  
       const size_t N = value.getN();
  
       V.resize(N);
       Y.resize(N);
  
       V.reset();
       Y.reset();
  
       for (T hit = __begin; hit != __end; ++hit) {
  
         const JString&    string   = geometry[hit->getString()];
         const JPosition3D position = string.getPosition(hit->getFloor());
         const double      Vi       = velocity.getInverseVelocity(hit->getDistance(position), hit->getZ(), position.getZ());
  
         const double      h1 = string.getHeight(hit->getFloor());
         const JPosition3D p1 = string.getPosition()  -  hit->getPosition();
         const double      ds = sqrt(p1.getLengthSquared()  +  h1*h1  +  2.0*p1.getZ()*h1);
         const double      y  = hit->getValue()  -  Vi*ds;
         const double      W  = sqrt(hit->getWeight());
  
         H.t1  =  W * 1.0;
         H.tx  =  W * Vi * p1.getX() * h1 / ds;
         H.ty  =  W * Vi * p1.getY() * h1 / ds;
         
         i.t1  =  value.getIndex(hit->getEKey(),   &H_t::t1);
         i.tx  =  value.getIndex(hit->getString(), &H_t::tx);
         i.ty  =  value.getIndex(hit->getString(), &H_t::ty);
  
         V(i.t1, i.t1) += H.t1 * H.t1;
  
         Y[i.t1] += W * H.t1 * y;
  
         if (hit->getFloor() != 0) {
  
           if (this->option != JMODEL::FIT_EMITTERS_ONLY_t) {
           
             V(i.t1, i.tx) += H.t1 * H.tx;  V(i.t1, i.ty) += H.t1 * H.ty;
             V(i.tx, i.t1) += H.tx * H.t1;  V(i.ty, i.t1) += H.ty * H.t1;
  
             V(i.tx, i.tx) += H.tx * H.tx;  V(i.tx, i.ty) += H.tx * H.ty;
             V(i.ty, i.tx) += H.ty * H.tx;  V(i.ty, i.ty) += H.ty * H.ty;
  
             Y[i.tx] += W * H.tx * y;
             Y[i.ty] += W * H.ty * y;
           }
         }
       }
  
       // solve A x = b
  
       V.solve(Y);
       
       for (size_t row = 0; row != N; ++row) {
         value[row] += Y[row];
       }
  
       return value;
     }