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.

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

Static Public Attributes
static JMatrix_t	MATRIX_INVERSION

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.

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 436 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 448 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 464 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 498 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;
    }