How to calculate coordinates from GPS to Meter?

General talk
2 
static Point2D getLocalCoords(LatLon point, LatLon center) {
        double dx = point.lon() - center.lon();
        double dy = point.lat() - center.lat();
        return new Point2D(dx * Math.cos(Math.toRadians(center.lat())) * 111320.0,
                dy * 111320.0);
    }

just that. works pretty good.