CR3BPDifferentialCorrection (OREKIT 12.2 API)

java.lang.Object
- org.orekit.orbits.CR3BPDifferentialCorrection

```
public class CR3BPDifferentialCorrection
extends Object
```
Class implementing the differential correction method for Halo or Lyapunov Orbits. It is not a simple differential correction, it uses higher order terms to be more accurate and meet orbits requirements.

Since:

10.2

Author:

Vincent Mouraux

See Also:

"Three-dimensional, periodic, Halo Orbits by Kathleen Connor Howell, Stanford University"

Constructor Summary

Constructors
Constructor	Description
`CR3BPDifferentialCorrection(PVCoordinates firstguess, CR3BPSystem syst, double orbitalPeriod)`	Simple Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`PVCoordinates`	`compute(LibrationOrbitType type)`	Return the real starting PVCoordinates on the Libration orbit type after differential correction from a first guess.
`PVCoordinates`	`computeLyapunov()`	Return the real starting PVCoordinates on the Lyapunov orbit after differential correction from a first guess.
`double`	`getOrbitalPeriod()`	Get the orbital period of the required orbit.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CR3BPDifferentialCorrection
```
public CR3BPDifferentialCorrection(PVCoordinates firstguess,
                                   CR3BPSystem syst,
                                   double orbitalPeriod)
```
    Simple Constructor.
    Standard constructor using DormandPrince853 integrator for the differential correction
    
    Parameters:
    
    firstguess - first guess PVCoordinates of the point to start differential correction
    
    syst - CR3BP System considered
    
    orbitalPeriod - Orbital Period of the required orbit
- Method Detail
  - compute
```
public PVCoordinates compute(LibrationOrbitType type)
```
    Return the real starting PVCoordinates on the Libration orbit type after differential correction from a first guess.
    
    Parameters:
    
    type - libration orbit type
    
    Returns:
    
    pv Position-Velocity of the starting point on the Halo Orbit
  - computeLyapunov
```
public PVCoordinates computeLyapunov()
```
    Return the real starting PVCoordinates on the Lyapunov orbit after differential correction from a first guess.
    
    Returns:
    
    pv Position-Velocity of the starting point on the Lyapunov Orbit
  - getOrbitalPeriod
```
public double getOrbitalPeriod()
```
    Get the orbital period of the required orbit.
    
    Returns:
    
    the orbitalPeriod