Package jmri.jmrix.rps

Class Ash2_1Algorithm

java.lang.Object

jmri.jmrix.rps.AbstractCalculator

jmri.jmrix.rps.Ash2_1Algorithm

All Implemented Interfaces:

Calculator

public class Ash2_1Algorithm
extends AbstractCalculator

Implementation of 2.1th algorithm for reducing Readings

This algorithm was provided by Robert Ashenfelter based in part on the work of Ralph Bucher in his paper "Exact Solution for Three Dimensional Hyperbolic Positioning Algorithm and Synthesizable VHDL Model for Hardware Implementation".

Neither Ashenfelter nor Bucher provide any guarantee as to the intellectual property status of this algorithm. Use it at your own risk.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	Ash2_1Algorithm.RetVal	Internal class to handle return value.

Field Summary

Fields

Modifier and Type	Field	Description
static int	NMAX
(package private) int	offset
static int	SMAX
static int	TMAX
static int	TMIN
(package private) double	Vs
(package private) double	Xt
(package private) double	Yt
(package private) double	Zt

Fields inherited from class jmri.jmrix.rps.AbstractCalculator

nr, sensors, Tr, Xr, Yr, Zr

Constructor Summary

Constructors

Constructor	Description
Ash2_1Algorithm(javax.vecmath.Point3d[] sensors, double vsound)
Ash2_1Algorithm(javax.vecmath.Point3d[] sensors, double vsound, int offset)
Ash2_1Algorithm(javax.vecmath.Point3d sensor1, javax.vecmath.Point3d sensor2, javax.vecmath.Point3d sensor3, double vsound)
Ash2_1Algorithm(javax.vecmath.Point3d sensor1, javax.vecmath.Point3d sensor2, javax.vecmath.Point3d sensor3, javax.vecmath.Point3d sensor4, double vsound)

Method Summary

Modifier and Type	Method	Description
Measurement	convert(Reading r)
Measurement	convert(Reading r, javax.vecmath.Point3d guess)	Seed the conversion using an estimated position
Measurement	convert(Reading r, Measurement last)	Seed the conversion using a last measurement
(package private) Ash2_1Algorithm.RetVal	RPSpos(int nr, double[] Tr, double[] Xr, double[] Yr, double[] Zr, double Vs, double Xt, double Yt, double Zt)

Methods inherited from class jmri.jmrix.rps.AbstractCalculator

prep, summarize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

Vs

double Vs

Xt

double Xt

Yt

double Yt

Zt

double Zt

offset

int offset

TMAX

public static int TMAX

TMIN

public static int TMIN

SMAX

public static int SMAX

NMAX

public static int NMAX

Constructor Details

Ash2_1Algorithm

public Ash2_1Algorithm(javax.vecmath.Point3d[] sensors,
 double vsound,
 int offset)

Ash2_1Algorithm

public Ash2_1Algorithm(javax.vecmath.Point3d[] sensors,
 double vsound)

Ash2_1Algorithm

public Ash2_1Algorithm(javax.vecmath.Point3d sensor1,
 javax.vecmath.Point3d sensor2,
 javax.vecmath.Point3d sensor3,
 double vsound)

Ash2_1Algorithm

public Ash2_1Algorithm(javax.vecmath.Point3d sensor1,
 javax.vecmath.Point3d sensor2,
 javax.vecmath.Point3d sensor3,
 javax.vecmath.Point3d sensor4,
 double vsound)

Method Details

convert

public Measurement convert(Reading r)

convert

public Measurement convert(Reading r,
 javax.vecmath.Point3d guess)

Seed the conversion using an estimated position

convert

public Measurement convert(Reading r,
 Measurement last)

Seed the conversion using a last measurement

RPSpos

Ash2_1Algorithm.RetVal RPSpos(int nr,
 double[] Tr,
 double[] Xr,
 double[] Yr,
 double[] Zr,
 double Vs,
 double Xt,
 double Yt,
 double Zt)