From b37bd1561f756ba6e4a80e4394fab214d730cb33 Mon Sep 17 00:00:00 2001
From: Luc Maisonobe <luc@orekit.org>
Date: Tue, 29 Jul 2014 11:22:09 +0200
Subject: [PATCH] Added dateLocalization.
---
.../java/org/orekit/rugged/api/Rugged.java | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/core/src/main/java/org/orekit/rugged/api/Rugged.java b/core/src/main/java/org/orekit/rugged/api/Rugged.java
index ae976748..cf5043c8 100644
--- a/core/src/main/java/org/orekit/rugged/api/Rugged.java
+++ b/core/src/main/java/org/orekit/rugged/api/Rugged.java
@@ -604,6 +604,52 @@ public class Rugged {
return inverseLocalization(sensorName, groundPoint, minLine, maxLine);
}
+ /** Find the date at which sensor sees a ground point.
+ * <p>
+ * This method is a partial {@link #inverseLocalization(String,
+ * GeodeticPoint, int, int) inverse localization} focusing only on date.
+ * </p>
+ * @param sensorName name of the line sensor
+ * @param point point to localize
+ * @param minLine minimum line number
+ * @param maxLine maximum line number
+ * @return date at which ground point is seen by line sensor
+ * @exception RuggedException if line cannot be localized, or sensor is unknown
+ * @see #inverseLocalization(String, GeodeticPoint, int, int)
+ */
+ public AbsoluteDate dateLocalization(final String sensorName, final GeodeticPoint point,
+ final int minLine, final int maxLine)
+ throws RuggedException {
+
+ final LineSensor sensor = getLineSensor(sensorName);
+ SensorMeanPlaneCrossing planeCrossing = finders.get(sensorName);
+ if (planeCrossing == null ||
+ planeCrossing.getMinLine() != minLine ||
+ planeCrossing.getMaxLine() != maxLine) {
+
+ // create a new finder for the specified sensor and range
+ planeCrossing = new SensorMeanPlaneCrossing(sensor, scToBody, minLine, maxLine,
+ lightTimeCorrection, aberrationOfLightCorrection,
+ MAX_EVAL, COARSE_INVERSE_LOCALIZATION_ACCURACY);
+
+ // store the finder, in order to reuse it
+ // (and save some computation done in its constructor)
+ finders.put(sensorName, planeCrossing);
+
+ }
+
+ // find approximately the sensor line at which ground point crosses sensor mean plane
+ final Vector3D target = ellipsoid.transform(point);
+ final SensorMeanPlaneCrossing.CrossingResult crossingResult = planeCrossing.find(target);
+ if (crossingResult == null) {
+ // target is out of search interval
+ return null;
+ } else {
+ return sensor.getDate(crossingResult.getLine());
+ }
+
+ }
+
/** Inverse localization of a point.
* @param sensorName name of the line sensor
* @param point point to localize
@@ -612,6 +658,7 @@ public class Rugged {
* @return sensor pixel seeing point, or null if point cannot be seen between the
* prescribed line numbers
* @exception RuggedException if line cannot be localized, or sensor is unknown
+ * @see #dateLocalization(String, GeodeticPoint, int, int)
*/
public SensorPixel inverseLocalization(final String sensorName, final GeodeticPoint point,
final int minLine, final int maxLine)
--
GitLab