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fix: apply orbit data for KOMPSAT-5 #120

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fix: apply orbit data for KOMPSAT-5 #120

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44 changes: 33 additions & 11 deletions s1tbx-io-ephemeris/src/main/java/org/esa/s1tbx/orbits/io/k5/K5OrbitFile.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,11 +27,8 @@

import java.io.*;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.List;
import java.util.StringTokenizer;
import java.text.SimpleDateFormat;
import java.util.*;

/**
* Kompsat-5 POD Orbit File
Expand All @@ -40,7 +37,7 @@ public class K5OrbitFile extends BaseOrbitFile implements OrbitFile {

public final static String PRECISE = "Kompsat5 Precise";

private final static String remoteURL = "ftp://aopod-ftp.kasi.re.kr/kompsat5rt/level1b/leoOrb/";
public final static String remoteURL = "ftp://aopod-ftp.kasi.re.kr/kompsat5rt/level1b/leoOrb/";

private final int polyDegree;
private final DateFormat orbitDateFormat = ProductData.UTC.createDateFormat("yyyy-MM-dd HH:mm:ss");
Expand Down Expand Up @@ -68,8 +65,9 @@ public File retrieveOrbitFile(final String orbitType) throws Exception {
if (orbitFile == null) {
String timeStr = absRoot.getAttributeUTC(AbstractMetadata.STATE_VECTOR_TIME).format();
final File destFolder = getDestFolder(orbitType, year, month);
throw new IOException("No valid orbit file found for " + timeStr +
"\nOrbit files may be downloaded from " + remoteURL
throw new IOException("No valid orbit file found for " + timeStr
// not working remoteURL
// + "\nOrbit files may be downloaded from " + remoteURL
+ "\nand placed in " + destFolder.getAbsolutePath());
}

Expand All @@ -82,7 +80,7 @@ public File retrieveOrbitFile(final String orbitType) throws Exception {
private static File getDestFolder(final String orbitType, final int year, final int month) {
//final String prefOrbitPath = Settings.getPath("OrbitFiles.k5POEOrbitPath");

return SystemUtils.getAuxDataPath().resolve("Orbits").resolve("K5").resolve("POEORB").toFile();
return SystemUtils.getAuxDataPath().resolve("Orbits").resolve("K5").resolve("POEORB").resolve(String.valueOf(year)).resolve(String.valueOf(month)).toFile();
}

private File findOrbitFile(final String orbitType,
Expand Down Expand Up @@ -255,9 +253,33 @@ private ProductData.UTC parseTime(final String line) throws Exception {
int day = Integer.parseInt(tokenizer.nextToken());
int hour = Integer.parseInt(tokenizer.nextToken());
int minute = Integer.parseInt(tokenizer.nextToken());
int second = (int) Double.parseDouble(tokenizer.nextToken());

//String date = "" + year +'-'+ month +'-'+ day +' '+ hour +':'+ minute +':' + 0;
//String date = "" + year +'-'+ month +'-'+ day +' '+ hour +':'+ minute +':' + second;
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
Date date = formatter.parse("" + year +'-'+ month +'-'+ day +' '+ hour +':'+ minute +':' + second);

Calendar c = Calendar.getInstance();
c.setTime(date);

//set gps time
Integer subSeconds = -18;
Date startSix = formatter.parse("2012-07-01 00:00:00");
Date startSeven = formatter.parse("2015-07-01 00:00:00");
Date startEight = formatter.parse("2016-12-31 00:00:00");

if (date.after(startSix) && date.before(startSeven)){
subSeconds = -16;
}else if (date.after(startSeven) && date.before(startEight)){
subSeconds = -17;
}

c.add(Calendar.SECOND, subSeconds);
Date gpsTime = c.getTime();

String date = "" + year +'-'+ month +'-'+ day +' '+ hour +':'+ minute +':' + 0;
return ProductData.UTC.parse(date, orbitDateFormat);
return ProductData.UTC.parse(formatter.format(gpsTime), orbitDateFormat);
}

private static void parsePosition(final String line, final Orbits.OrbitVector orbitVector) {
Expand Down