targetMotionOld

Class EventRotator

java.lang.Object

targetMotionOld.EventRotator

public class EventRotator
extends java.lang.Object

Reinstated class to rotate and transform an event so that it's track lies as close as possible to the x axis.
Step 1 is to convert all units to metres, relative to the origin coordinate of the first sub detection
Step 2 is to fit a straight line through all the origin points
Step 3 is to rotate all position and angle vectors so that they correspond to a track as close as possible to the x axis.

Author:

Doug Gillespie

Constructor Summary

Constructors

Constructor and Description
EventRotator(PamDetection pamDetection)

Method Summary

Methods

Modifier and Type	Method and Description
long	getLastUpdateTime()
double	getLinFitA() The 'a' parameter of a straight line fit through the coordinates before they were rotated (y = a + bx);
double	getLinFitB() The 'b' parameter of a straight line fit through the coordinates before they were rotated (y = a + bx);
int	getnSubDetections()
PamDetection	getPamDetection()
LatLong	getPlotOrigin() The LatLong of the coordinate frame origin.
double	getReferenceAngle() the reference angle for the straight line track (i.e.
int	getReferenceHydrophones()
double[]	getRotatedArrayAngles() Get an array of rotated array angles at each point in the Cartesian coordinate frame (i.e.
PamVector[]	getRotatedHeadings() Array headings at each point in Cartesian coordinate frame rotated to be close to x axis.
PamVector[]	getRotatedOrigins() Sub detection origins, rotated to lie close to the x axis.
PamVector[][]	getRotatedWorldVectors() Get rotated world vectors - vectors rotated with other data to lie along the x axis.
PamVector[]	getSubDetectionHeadings() Unit vectors giving the heading of the array at each sub detection in Cartesian coordinate frame.
PamVector[]	getSubDetectionOrigins() Sub detection origins, in m E and N of the first one.
PamVector[][]	getWorldVectors() Get vectors transformed into real world Co-Ordinates, i.e.
PamVector	latLongToMetres(LatLong ll, boolean rotate)
LatLong	metresToLatLong(PamVector pt, boolean isRotated)
long	metresToTime(PamVector pt, boolean isRotated) From a position, work out what time that position was passed.

Methods inherited from class java.lang.Object

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

Constructor Detail

EventRotator

public EventRotator(PamDetection pamDetection)

Parameters:

pamDetection -

Method Detail

latLongToMetres

public PamVector latLongToMetres(LatLong ll,
                        boolean rotate)

metresToLatLong

public LatLong metresToLatLong(PamVector pt,
                      boolean isRotated)

metresToTime

public long metresToTime(PamVector pt,
                boolean isRotated)

From a position, work out what time that position was passed.

Parameters:

pt -

isRotated -

Returns:

time in milliseconds.

getPamDetection

public PamDetection getPamDetection()

Returns:

the pamDetection

getLastUpdateTime

public long getLastUpdateTime()

Returns:

the lastUpdateTime

getSubDetectionOrigins

public PamVector[] getSubDetectionOrigins()

Sub detection origins, in m E and N of the first one.
These values have NOT been rotated.

Returns:

the subDetectionOrigins

getSubDetectionHeadings

public PamVector[] getSubDetectionHeadings()

Unit vectors giving the heading of the array at each sub detection in Cartesian coordinate frame.
These are NOT rotated

Returns:

the subDetectionHeadings

getRotatedOrigins

public PamVector[] getRotatedOrigins()

Sub detection origins, rotated to lie close to the x axis.

Returns:

the rotatedOrigins

getnSubDetections

public int getnSubDetections()

Returns:

the number of sub detections (i.e. the number of points to expect in each of the vector arrays)

getPlotOrigin

public LatLong getPlotOrigin()

The LatLong of the coordinate frame origin. This should be the LatLong of the first sub detection in the event.

Returns:

the plotOrigin

getLinFitA

public double getLinFitA()

The 'a' parameter of a straight line fit through the coordinates before they were rotated (y = a + bx);

Returns:

the linFitA

getLinFitB

public double getLinFitB()

The 'b' parameter of a straight line fit through the coordinates before they were rotated (y = a + bx);

Returns:

the linFitB

getReferenceAngle

public double getReferenceAngle()

the reference angle for the straight line track (i.e. the getLinfitB() turned into an angle). This angle is in the Cartesian coordinate frame (i.e. anti clockwise from x axis).

Returns:

the referenceAngle

getRotatedArrayAngles

public double[] getRotatedArrayAngles()

Get an array of rotated array angles at each point in the Cartesian coordinate frame (i.e. anti clockwise from x axis).

Returns:

the arrayAngles

getRotatedHeadings

public PamVector[] getRotatedHeadings()

Array headings at each point in Cartesian coordinate frame rotated to be close to x axis.

Returns:

the rotatedHeadings

getRotatedWorldVectors

public PamVector[][] getRotatedWorldVectors()

Get rotated world vectors - vectors rotated with other data to lie along the x axis.

Returns:

getWorldVectors

public PamVector[][] getWorldVectors()

Get vectors transformed into real world Co-Ordinates, i.e. relative to N and E rather than the array axis.

Returns:

getReferenceHydrophones

public int getReferenceHydrophones()

Returns:

bitmap of hydrophones used in the event rotator