Thank you Nico,
i will try it again.
73, Apostolos
On Wed, 2018-06-27 at 15:08 +0200, Nico Janssen wrote:
Apostolos,
I don't think you are doing anything wrong. Your results look correct. But I cannot check everything because I am running the most recent version of the script with the 29 June orbital elements.
Sometimes I also get the 'NaN' result in the elevation column. I think this is a program bug. I found that sometimes it helps to do the following: stop GMAT, start GMAT, load the script, immediately run the script before doing anything else with the program.
I hope this helps.
73, Nico
On 27-06-18 13:25, Apostolos Kefalas wrote:
On Sun, 2018-06-24 at 09:04 +0200, Nico Janssen wrote:
Ken,
You can always find the most recent LongJiang 2 orbital elements for GMAT in my GMAT script for LongJiang 2 here: https://hamsat1.home.xs4all.nl/LongJiang2_NYC.script
For further information see my web page: https://hamsat1.home.xs4all.nl/index.html
Hello Nico,
I am trying to use your script for GMAT and learn a little bit of it. I am using GMAT R2018a 64bit for linux.
So far I have added a new "Ground Station" with the exact same "options" of "New_York_City", but with the coordinates of Athens (Lat:38.0246 , Lon:23.8442, Elev:0.230)
Also in the "Event Locators -> ContactLocator->Observers" I have unchecked New_York_City and checked Athens.
I run the Analysis and get the following:
Target: LongJiang2
Observer: Athens Start Time (UTC) Stop Time (UTC) Duration (s) 22 Jun 2018 20:00:01.308 22 Jun 2018 23:57:54.270 14272.962042 23 Jun 2018 13:30:48.606 24 Jun 2018 00:31:55.696 39667.090330 24 Jun 2018 14:29:38.778 25 Jun 2018 01:08:24.795 38326.017501 25 Jun 2018 15:29:40.410 26 Jun 2018 01:47:31.343 37070.933417 26 Jun 2018 16:25:59.568 27 Jun 2018 02:18:55.784 35576.216663 27 Jun 2018 17:18:46.946 28 Jun 2018 03:01:47.463 34980.517488 28 Jun 2018 18:07:27.244 29 Jun 2018 03:51:26.879 35039.635199 29 Jun 2018 18:51:47.025 30 Jun 2018 04:46:31.909 35684.884510 30 Jun 2018 19:31:54.199 01 Jul 2018 05:46:51.938 36897.739497 01 Jul 2018 20:08:14.499 02 Jul 2018 06:32:57.414 37482.914687
Number of events : 10
According to the above there should be a "pass" over my location on 27 Jun 2018 17:18:46.946 until 28 Jun 2018 03:01:47.463 (correct?)
But when I see the ReportFile1 I get:
........ (snip)
27 Jun 2018 17:23:32.914 150.5092511914209 NaN 419362.0357962959 282 97.22511514511 27 Jun 2018 17:40:29.154 142.0321174249796 NaN 418700.9067020232 282 97.23687717522 27 Jun 2018 18:00:10.948 133.4730126623195 NaN 417834.3036042269 282 97.25055535639 27 Jun 2018 18:18:31.981 126.6220879528141 NaN 416924.6852335503 282 97.26329879122 27 Jun 2018 18:33:21.680 121.7549078882987 NaN 416111.3291154901 282 97.27359622712 27 Jun 2018 18:48:06.639 117.4075174974269 NaN 415226.7124895696 282 97.28383881658 27 Jun 2018 19:01:35.422 113.7946111646366 NaN 414346.6042086262 282 97.29319973242 27 Jun 2018 19:13:46.677 110.7761388040548 NaN 413486.9471883456 282 97.30166332914 27 Jun 2018 19:24:48.083 108.217464063449 NaN 412653.1299510594 282 97.3093184835 27 Jun 2018 19:33:38.926 106.2647394891434 NaN 411942.9592179462 282 97.31546249967 27 Jun 2018 19:41:30.141 104.5965376382924 NaN 411280.9274945419 282 97.32091637599 27 Jun 2018 19:48:27.000 103.1654945120115 NaN 410670.3271268641 282 97.3257411411 27 Jun 2018 19:54:38.434 101.9214367116329 NaN 410107.171915261 282 97.3300401459
........ (snip)
Could please explain what am I doing wrong and I do not have an elevation calculation?
Thanks in advance Apostolos - SV1LJJ
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