CCSDS 503.0-B Tracking Data Message parser and serializer
irmin: adapt ocaml-scitt to new Schema API — 13/20 tests pass
+226
-25
+32
-25
test/interop/orekit/scripts/generate.java
+32
-25
test/interop/orekit/scripts/generate.java
···
13
13
// OREKIT needs orekit-data for time scales. We bootstrap a minimal dataset
14
14
// (UTC-TAI.history) in a temp directory.
15
15
16
-
import org.orekit.data.DataContext;
17
-
import org.orekit.data.DataProvidersManager;
18
16
import org.orekit.data.DataSource;
19
-
import org.orekit.data.DirectoryCrawler;
20
17
import org.orekit.files.ccsds.ndm.ParserBuilder;
21
18
import org.orekit.files.ccsds.ndm.WriterBuilder;
22
-
import org.orekit.files.ccsds.ndm.tdm.Observation;
23
19
import org.orekit.files.ccsds.ndm.tdm.ObservationsBlock;
24
-
import org.orekit.files.ccsds.ndm.tdm.ObservationType;
25
20
import org.orekit.files.ccsds.ndm.tdm.Tdm;
26
21
import org.orekit.files.ccsds.ndm.tdm.TdmMetadata;
27
22
import org.orekit.files.ccsds.ndm.tdm.TdmParser;
28
23
import org.orekit.files.ccsds.ndm.tdm.TdmWriter;
29
-
import org.orekit.files.ccsds.section.Segment;
30
24
import org.orekit.files.ccsds.utils.generation.KvnGenerator;
31
-
import org.orekit.time.AbsoluteDate;
32
25
import org.orekit.time.DateComponents;
33
26
import org.orekit.time.OffsetModel;
34
-
import org.orekit.time.TAIUTCDatFilesLoader;
35
-
import org.orekit.time.TimeScale;
36
27
import org.orekit.time.TimeScalesFactory;
37
28
import org.orekit.time.UTCTAIOffsetsLoader;
38
29
···
385
376
return sw.toString();
386
377
}
387
378
388
-
/** Extract observation values from a parsed TDM for the CSV index. */
389
-
static List<ExpectedObs> extractObs(Tdm tdm, TimeScale utc) {
379
+
/**
380
+
* Extract observation keywords, epochs, and values from the KVN text.
381
+
* We parse from the generated KVN (not from getMeasurement()) because
382
+
* OREKIT stores values in SI internally but writes them in TDM units.
383
+
* Our OCaml parser reads KVN text, so expected values must match KVN.
384
+
*/
385
+
static List<ExpectedObs> extractObsFromKvn(String kvn) {
390
386
List<ExpectedObs> result = new ArrayList<>();
391
-
for (var segment : tdm.getSegments()) {
392
-
ObservationsBlock block = segment.getData();
393
-
for (Observation obs : block.getObservations()) {
394
-
String keyword = obs.getType().name();
395
-
AbsoluteDate epoch = obs.getEpoch();
396
-
double value = obs.getMeasurement();
397
-
String epochStr = epoch.toString(utc);
398
-
result.add(new ExpectedObs(keyword, epochStr, value));
399
-
}
387
+
boolean inData = false;
388
+
for (String line : kvn.split("\n")) {
389
+
line = line.trim();
390
+
if (line.equals("DATA_START")) { inData = true; continue; }
391
+
if (line.equals("DATA_STOP")) { inData = false; continue; }
392
+
if (!inData) continue;
393
+
if (line.isEmpty() || line.startsWith("COMMENT")) continue;
394
+
395
+
// Format: KEYWORD = epoch value
396
+
int eq = line.indexOf('=');
397
+
if (eq < 0) continue;
398
+
String keyword = line.substring(0, eq).trim();
399
+
String rest = line.substring(eq + 1).trim();
400
+
int lastSpace = rest.lastIndexOf(' ');
401
+
if (lastSpace < 0) continue;
402
+
String epoch = rest.substring(0, lastSpace).trim();
403
+
String valStr = rest.substring(lastSpace + 1).trim();
404
+
double value = Double.parseDouble(valStr);
405
+
result.add(new ExpectedObs(keyword, epoch, value));
400
406
}
401
407
return result;
402
408
}
···
429
435
String obsKeywords, String obsEpochs, String obsValues
430
436
) {}
431
437
432
-
static IndexRow buildIndexRow(String name, Tdm tdm, TimeScale utc) {
438
+
static IndexRow buildIndexRow(String name, Tdm tdm, String kvnOut) {
433
439
var seg = tdm.getSegments().get(0);
434
440
TdmMetadata meta = seg.getMetadata();
435
441
Map<Integer, String> participants = meta.getParticipants();
···
437
443
String p2 = participants.getOrDefault(2, "");
438
444
String p3 = participants.getOrDefault(3, "");
439
445
440
-
List<ExpectedObs> obs = extractObs(tdm, utc);
446
+
List<ExpectedObs> obs = extractObsFromKvn(kvnOut);
441
447
StringBuilder keywords = new StringBuilder();
442
448
StringBuilder epochs = new StringBuilder();
443
449
StringBuilder values = new StringBuilder();
···
469
475
// Bootstrap OREKIT with minimal data
470
476
bootstrap();
471
477
472
-
TimeScale utc = TimeScalesFactory.getUTC();
478
+
// Eagerly load UTC scale so parsing works
479
+
TimeScalesFactory.getUTC();
473
480
Scenario[] allScenarios = scenarios();
474
481
List<IndexRow> indexRows = new ArrayList<>();
475
482
···
494
501
Files.writeString(outPath, kvnOut);
495
502
System.out.println("Wrote " + outPath);
496
503
497
-
// Build index row from OREKIT-parsed data
498
-
indexRows.add(buildIndexRow(sc.name(), tdm, utc));
504
+
// Build index row from OREKIT-generated KVN
505
+
indexRows.add(buildIndexRow(sc.name(), tdm, kvnOut));
499
506
}
500
507
501
508
// Write CSV index
+25
test/interop/orekit/traces/angles_azel.kvn
+25
test/interop/orekit/traces/angles_azel.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = ESOC
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-06-01T00:00:00.0
8
+
STOP_TIME = 2024-06-01T00:30:00.0
9
+
PARTICIPANT_1 = MALINDI
10
+
PARTICIPANT_2 = SENTINEL-1A
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
INTEGRATION_INTERVAL = 0.0
14
+
FREQ_OFFSET = 0.0
15
+
ANGLE_TYPE = AZEL
16
+
DATA_QUALITY = VALIDATED
17
+
META_STOP
18
+
DATA_START
19
+
ANGLE_1 = 2024-06-01T00:00:00.0 145.678901
20
+
ANGLE_2 = 2024-06-01T00:00:00.0 32.456789
21
+
ANGLE_1 = 2024-06-01T00:15:00.0 156.789012
22
+
ANGLE_2 = 2024-06-01T00:15:00.0 45.56789
23
+
ANGLE_1 = 2024-06-01T00:30:00.0 167.890123
24
+
ANGLE_2 = 2024-06-01T00:30:00.0 58.678901
25
+
DATA_STOP
+25
test/interop/orekit/traces/edge_values.kvn
+25
test/interop/orekit/traces/edge_values.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = NASA/GSFC
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-12-31T23:59:00.0
8
+
STOP_TIME = 2024-12-31T23:59:01.0
9
+
PARTICIPANT_1 = WHITESANDS
10
+
PARTICIPANT_2 = TDRS-M
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
TRANSMIT_BAND = S
14
+
RECEIVE_BAND = S
15
+
TIMETAG_REF = TRANSMIT
16
+
INTEGRATION_INTERVAL = 0.0
17
+
FREQ_OFFSET = 0.0
18
+
RANGE_UNITS = km
19
+
META_STOP
20
+
DATA_START
21
+
RANGE = 2024-12-31T23:59:00.0 0.0
22
+
DOPPLER_INSTANTANEOUS = 2024-12-31T23:59:00.0 -99999.999999
23
+
DOPPLER_INSTANTANEOUS = 2024-12-31T23:59:01.0 99999.999999
24
+
RANGE = 2024-12-31T23:59:01.0 1.0E12
25
+
DATA_STOP
+23
test/interop/orekit/traces/fractional_seconds.kvn
+23
test/interop/orekit/traces/fractional_seconds.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = JAXA
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-02-29T12:00:00.123
8
+
STOP_TIME = 2024-02-29T12:00:01.123
9
+
PARTICIPANT_1 = USUDA
10
+
PARTICIPANT_2 = HAYABUSA2
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
TRANSMIT_BAND = X
14
+
RECEIVE_BAND = X
15
+
INTEGRATION_INTERVAL = 0.0
16
+
FREQ_OFFSET = 0.0
17
+
RANGE_UNITS = km
18
+
META_STOP
19
+
DATA_START
20
+
RANGE = 2024-02-29T12:00:00.123 12345.6789
21
+
RANGE = 2024-02-29T12:00:00.623 12345.789
22
+
RANGE = 2024-02-29T12:00:01.123 12345.8901
23
+
DATA_STOP
+8
test/interop/orekit/traces/index.csv
+8
test/interop/orekit/traces/index.csv
···
1
+
name,file,participant_1,participant_2,participant_3,num_observations,obs_keywords,obs_epochs,obs_values
2
+
range_doppler,range_doppler.kvn,DSS-25,MARS RECONNAISSANCE ORBITER,,6,"RANGE;RANGE;RANGE;DOPPLER_INSTANTANEOUS;DOPPLER_INSTANTANEOUS;DOPPLER_INSTANTANEOUS","2024-03-15T10:00:00.0;2024-03-15T10:10:00.0;2024-03-15T10:20:00.0;2024-03-15T10:00:00.0;2024-03-15T10:10:00.0;2024-03-15T10:20:00.0","285432167.89000;285432245.12300;285432322.45600;-4567.1234560000;-4567.2345670000;-4567.3456780000"
3
+
angles_azel,angles_azel.kvn,MALINDI,SENTINEL-1A,,6,"ANGLE_1;ANGLE_2;ANGLE_1;ANGLE_2;ANGLE_1;ANGLE_2","2024-06-01T00:00:00.0;2024-06-01T00:00:00.0;2024-06-01T00:15:00.0;2024-06-01T00:15:00.0;2024-06-01T00:30:00.0;2024-06-01T00:30:00.0","145.67890100000;32.456789000000;156.78901200000;45.567890000000;167.89012300000;58.678901000000"
4
+
receive_freq,receive_freq.kvn,TOULOUSE,JASON-3,,3,"RECEIVE_FREQ;RECEIVE_FREQ;RECEIVE_FREQ","2024-09-20T08:30:00.0;2024-09-20T08:35:00.0;2024-09-20T08:40:00.0","8420432156.7890;8420432178.4560;8420432200.1230"
5
+
mixed,mixed.kvn,WEILHEIM,TERRASAR-X,,8,"RANGE;ANGLE_1;ANGLE_2;DOPPLER_INSTANTANEOUS;RANGE;ANGLE_1;ANGLE_2;DOPPLER_INSTANTANEOUS","2025-01-01T00:00:00.0;2025-01-01T00:00:00.0;2025-01-01T00:00:00.0;2025-01-01T00:00:00.0;2025-01-01T00:01:00.0;2025-01-01T00:01:00.0;2025-01-01T00:01:00.0;2025-01-01T00:01:00.0","50000.000000000;90.000000000000;45.000000000000;-100.50000000000;50001.234000000;90.123000000000;45.456000000000;-100.67800000000"
6
+
edge_values,edge_values.kvn,WHITESANDS,TDRS-M,,4,"RANGE;DOPPLER_INSTANTANEOUS;DOPPLER_INSTANTANEOUS;RANGE","2024-12-31T23:59:00.0;2024-12-31T23:59:00.0;2024-12-31T23:59:01.0;2024-12-31T23:59:01.0","0.0000000000000;-99999.999999000;99999.999999000;1000000000000.0"
7
+
three_participants,three_participants.kvn,DSS-14,LUNAR-GATEWAY,ORION,2,"RANGE;RANGE","2024-07-04T12:00:00.0;2024-07-04T12:02:00.0","384400.00000000;384401.56700000"
8
+
fractional_seconds,fractional_seconds.kvn,USUDA,HAYABUSA2,,3,"RANGE;RANGE;RANGE","2024-02-29T12:00:00.123;2024-02-29T12:00:00.623;2024-02-29T12:00:01.123","12345.678900000;12345.789000000;12345.890100000"
+33
test/interop/orekit/traces/mixed.kvn
+33
test/interop/orekit/traces/mixed.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = DLR
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2025-01-01T00:00:00.0
8
+
STOP_TIME = 2025-01-01T00:01:00.0
9
+
PARTICIPANT_1 = WEILHEIM
10
+
PARTICIPANT_2 = TERRASAR-X
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
TRANSMIT_BAND = X
14
+
RECEIVE_BAND = X
15
+
TIMETAG_REF = TRANSMIT
16
+
INTEGRATION_INTERVAL = 1.0
17
+
INTEGRATION_REF = START
18
+
FREQ_OFFSET = 0.0
19
+
RANGE_MODE = COHERENT
20
+
RANGE_UNITS = km
21
+
ANGLE_TYPE = AZEL
22
+
DATA_QUALITY = RAW
23
+
META_STOP
24
+
DATA_START
25
+
RANGE = 2025-01-01T00:00:00.0 50000.0
26
+
ANGLE_1 = 2025-01-01T00:00:00.0 90.0
27
+
ANGLE_2 = 2025-01-01T00:00:00.0 45.0
28
+
DOPPLER_INSTANTANEOUS = 2025-01-01T00:00:00.0 -100.5
29
+
RANGE = 2025-01-01T00:01:00.0 50001.234
30
+
ANGLE_1 = 2025-01-01T00:01:00.0 90.123
31
+
ANGLE_2 = 2025-01-01T00:01:00.0 45.456
32
+
DOPPLER_INSTANTANEOUS = 2025-01-01T00:01:00.0 -100.678
33
+
DATA_STOP
+30
test/interop/orekit/traces/range_doppler.kvn
+30
test/interop/orekit/traces/range_doppler.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = NASA/JPL
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-03-15T10:00:00.0
8
+
STOP_TIME = 2024-03-15T10:20:00.0
9
+
PARTICIPANT_1 = DSS-25
10
+
PARTICIPANT_2 = MARS RECONNAISSANCE ORBITER
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
TRANSMIT_BAND = X
14
+
RECEIVE_BAND = X
15
+
TIMETAG_REF = TRANSMIT
16
+
INTEGRATION_INTERVAL = 1.0
17
+
INTEGRATION_REF = MIDDLE
18
+
FREQ_OFFSET = 0.0
19
+
RANGE_MODE = COHERENT
20
+
RANGE_UNITS = km
21
+
DATA_QUALITY = RAW
22
+
META_STOP
23
+
DATA_START
24
+
RANGE = 2024-03-15T10:00:00.0 2.8543216789E8
25
+
RANGE = 2024-03-15T10:10:00.0 2.85432245123E8
26
+
RANGE = 2024-03-15T10:20:00.0 2.85432322456E8
27
+
DOPPLER_INSTANTANEOUS = 2024-03-15T10:00:00.0 -4567.123456
28
+
DOPPLER_INSTANTANEOUS = 2024-03-15T10:10:00.0 -4567.234567
29
+
DOPPLER_INSTANTANEOUS = 2024-03-15T10:20:00.0 -4567.345678
30
+
DATA_STOP
+23
test/interop/orekit/traces/receive_freq.kvn
+23
test/interop/orekit/traces/receive_freq.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = CNES
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-09-20T08:30:00.0
8
+
STOP_TIME = 2024-09-20T08:40:00.0
9
+
PARTICIPANT_1 = TOULOUSE
10
+
PARTICIPANT_2 = JASON-3
11
+
MODE = SEQUENTIAL
12
+
PATH = 1,2,1
13
+
TRANSMIT_BAND = X
14
+
RECEIVE_BAND = X
15
+
TIMETAG_REF = RECEIVE
16
+
INTEGRATION_INTERVAL = 0.0
17
+
FREQ_OFFSET = 0.0
18
+
META_STOP
19
+
DATA_START
20
+
RECEIVE_FREQ = 2024-09-20T08:30:00.0 8.420432156789E9
21
+
RECEIVE_FREQ = 2024-09-20T08:35:00.0 8.420432178456E9
22
+
RECEIVE_FREQ = 2024-09-20T08:40:00.0 8.420432200123E9
23
+
DATA_STOP
+25
test/interop/orekit/traces/three_participants.kvn
+25
test/interop/orekit/traces/three_participants.kvn
···
1
+
CCSDS_TDM_VERS = 1.0
2
+
CREATION_DATE = 2025-01-01T00:00:00.0
3
+
ORIGINATOR = NASA/JPL
4
+
5
+
META_START
6
+
TIME_SYSTEM = UTC
7
+
START_TIME = 2024-07-04T12:00:00.0
8
+
STOP_TIME = 2024-07-04T12:02:00.0
9
+
PARTICIPANT_1 = DSS-14
10
+
PARTICIPANT_2 = LUNAR-GATEWAY
11
+
PARTICIPANT_3 = ORION
12
+
MODE = SEQUENTIAL
13
+
PATH = 1,2,3
14
+
TRANSMIT_BAND = KA
15
+
RECEIVE_BAND = KA
16
+
TIMETAG_REF = TRANSMIT
17
+
INTEGRATION_INTERVAL = 0.0
18
+
FREQ_OFFSET = 0.0
19
+
RANGE_MODE = COHERENT
20
+
RANGE_UNITS = km
21
+
META_STOP
22
+
DATA_START
23
+
RANGE = 2024-07-04T12:00:00.0 384400.0
24
+
RANGE = 2024-07-04T12:02:00.0 384401.567
25
+
DATA_STOP