org.orekit.estimation.measurements.gnss

Class PhaseMinusCodeCycleSlipDetector

java.lang.Object

org.orekit.estimation.measurements.gnss.AbstractCycleSlipDetector

org.orekit.estimation.measurements.gnss.PhaseMinusCodeCycleSlipDetector

All Implemented Interfaces:

CycleSlipDetectors

public class PhaseMinusCodeCycleSlipDetector
extends AbstractCycleSlipDetector

Phase minus code cycle slip detectors. The detector is based the algorithm given in Examples of single frequency Cycle-Slip Detectors by Zornoza and M. Hernández-Pajares. Within this class a polynomial is used to smooth the data. We consider a cycle_slip occurring if the current measurement is too far from the one predicted with the polynomial (algorithm 1 on Navipedia).

For building the detector, one should give a threshold and a gap time limit. After construction of the detectors, one can have access to a List of CycleData. Each CycleDate represents a link between the station (define by the RINEX file) and a satellite at a specific frequency. For each cycle data, one has access to the begin and end of availability, and a sorted set which contains all the date at which cycle-slip have been detected

Since:

10.2

Author:

David Soulard

Constructor Summary

Constructors

Constructor and Description
PhaseMinusCodeCycleSlipDetector(double dt, double threshold, int n, int order) Polynomial single frequency cycle-slip detector Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	manageData(ObservationDataSet observation) The method is in charge of collecting the measurements, manage them, and call the detection method.

Methods inherited from class org.orekit.estimation.measurements.gnss.AbstractCycleSlipDetector

cycleSlipDataSet, detect, getMaxTimeBeetween2Measurement, getMinMeasurementNumber, getResults, getStuffReference, setName

Methods inherited from class java.lang.Object

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

Constructor Detail

PhaseMinusCodeCycleSlipDetector

public PhaseMinusCodeCycleSlipDetector(double dt,
                                       double threshold,
                                       int n,
                                       int order)

Polynomial single frequency cycle-slip detector Constructor.

Parameters:

dt - time gap threshold between two consecutive measurement (if time between two consecutive measurement is greater than dt, a cycle slip is declared)

threshold - threshold above which cycle-slip occurs

n - number of measurement before starting

order - polynomial order

Method Detail

manageData

protected void manageData(ObservationDataSet observation)

The method is in charge of collecting the measurements, manage them, and call the detection method.

Specified by:

manageData in class AbstractCycleSlipDetector

Parameters:

observation - observation data set