Dear all,
When I read the crd/npt file downloaded from ilrs using Orekit-11.0, it complains that “java.lang.IllegalStateException: stream has already been operated upon or closed”.
I’ve debugged carefully, and found that the reason is the COMMENTS(“00”) records.
Here is an example of crd/npt file.
H1 CRD 1 2021 01 19 23
H2 KTZL 1893 18 01 4
H3 lageos1 7603901 1155 8820 0 1
H4 1 2021 01 19 23 04 46 2021 01 19 23 15 03 0 0 0 0 1 0 2 0
C0 0 532.0 PDAS PCOD NCOL NCOT
C1 0 NCOL ND-YAG 1064.0 10.0 100. 250. 30. 1
C2 0 PCOD PMT 532.0 6. 950.0 .2 PHOTON-DEP 950.0 .2 40. 50. CFD
C3 0 NCOT GPS_Trimble_Thunderbolt_E GPS_Trimble_Thunderbolt_E SR620 02379 .0
60 PDAS 0 3
00 New CFD in the STOP channel
00 No CFD in the START channel
00 New experimental detector (transistor) in the START channel**
40 82905.0 0 PDAS 100 100 -1.000 114600. -50. 153. -1.000 -1.000 -1.0 3 2 0
20 82905.0 1018.0 271.25 44. 0
50 PDAS 130. -1.000 -1.000 -1.0 0
11 83098.3290105 .048305496438 PDAS 2 120 7 48. -1.000 -1.000 -1.0 -1.0 0
11 83174.4241325 .047868166718 PDAS 2 120 2 214. -1.000 -1.000 -1.0 -1.0 0
11 83405.2093544 .047156181526 PDAS 2 120 3 78. -1.000 -1.000 -1.0 -1.0 0
11 83703.1902849 .047649035124 PDAS 2 120 2 29. -1.000 -1.000 -1.0 -1.0 0
20 83860.0 1018.0 271.75 43. 0
40 83860.0 0 PDAS 100 100 -1.000 114650. -50. 183. -1.000 -1.000 -1.0 3 2 0
H8
H9
In this file, COMMENTS(“00”) are three lines, and come after COMPATIBILITY(“60”) record, and are followed by CALIB(“40”) record.
So I proposal: (1) COMMENTS can be followed by COMMENTS and any other records; (2) Any other records can be followed by COMMENTS record, “Comment lines can occur anywhere within a file.” wrote in Consolidated Laser Ranging Data Format v2.01.
Here is one of changes:
Stream.of(H1, H2, H3, H4, H5, H8, C0, C1, C2, C3, C4, C5, C6, C7, TEN, ELEVEN, TWELVE, METEO,METEO_SUPP, ANGLES, CALIB, CALIB_DETAILS, CALIB_SHOT, STAT, COMPATIBILITY, COMMENTS);
