protected virtual PassDetails EndPass(string groupName)
{
PassDetails details = new PassDetails()
{
GroupName = groupName, TechniqueName = GetTechniqueName()
};
Clear();
return(details);
}
private List <PassDetails> SetupKnownPasses()
{
List <PassDetails> passes = new List <PassDetails>();
passes.Add(PassDetails.Parse("AOS: 4/13/2015 12:05:39 AM, LOS: 4/13/2015 12:16:18 AM, Max El: 72.9662819114617, Duration: 0:10:39"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 1:42:36 AM, LOS: 4/13/2015 1:52:38 AM, Max El: 22.2565140158341, Duration: 0:10:2"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 3:20:10 AM, LOS: 4/13/2015 3:29:33 AM, Max El: 14.3608087808289, Duration: 0:9:23"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 4:56:59 AM, LOS: 4/13/2015 5:07:07 AM, Max El: 24.8812838319532, Duration: 0:10:8"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 6:33:20 AM, LOS: 4/13/2015 6:43:51 AM, Max El: 55.156581296221, Duration: 0:10:31"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 8:10:53 AM, LOS: 4/13/2015 8:17:43 AM, Max El: 5.32236448706013, Duration: 0:6:50"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 9:39:21 PM, LOS: 4/13/2015 9:43:58 PM, Max El: 2.02758971989252, Duration: 0:4:37"));
passes.Add(PassDetails.Parse("AOS: 4/13/2015 11:12:00 PM, LOS: 4/13/2015 11:22:22 PM, Max El: 35.2741789738443, Duration: 0:10:22"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 12:48:22 AM, LOS: 4/14/2015 12:58:45 AM, Max El: 31.6297414454579, Duration: 0:10:23"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 2:25:57 AM, LOS: 4/14/2015 2:35:23 AM, Max El: 14.8391729126458, Duration: 0:9:26"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 4:03:03 AM, LOS: 4/14/2015 4:12:52 AM, Max El: 18.825125182266, Duration: 0:9:49"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 5:39:26 AM, LOS: 4/14/2015 5:50:03 AM, Max El: 74.0719455689951, Duration: 0:10:37"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 7:16:16 AM, LOS: 4/14/2015 7:25:08 AM, Max El: 12.4996870879068, Duration: 0:8:52"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 10:18:38 PM, LOS: 4/14/2015 10:28:16 PM, Max El: 18.2935140103749, Duration: 0:9:38"));
passes.Add(PassDetails.Parse("AOS: 4/14/2015 11:54:15 PM, LOS: 4/15/2015 12:04:52 AM, Max El: 52.3973867086772, Duration: 0:10:37"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 1:31:38 AM, LOS: 4/15/2015 1:41:18 AM, Max El: 16.9100893854387, Duration: 0:9:40"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 3:09:01 AM, LOS: 4/15/2015 3:18:32 AM, Max El: 15.7138023412645, Duration: 0:9:31"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 4:45:32 AM, LOS: 4/15/2015 4:56:01 AM, Max El: 40.5996122963757, Duration: 0:10:29"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 6:22:02 AM, LOS: 4/15/2015 6:31:59 AM, Max El: 24.1812087921171, Duration: 0:9:57"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 9:25:39 PM, LOS: 4/15/2015 9:33:52 PM, Max El: 9.10817960156249, Duration: 0:8:13"));
passes.Add(PassDetails.Parse("AOS: 4/15/2015 11:00:16 PM, LOS: 4/15/2015 11:10:56 PM, Max El: 82.1837946273511, Duration: 0:10:40"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 12:37:17 AM, LOS: 4/16/2015 12:47:16 AM, Max El: 21.2008246719398, Duration: 0:9:59"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 2:14:50 AM, LOS: 4/16/2015 2:24:13 AM, Max El: 14.4443955221174, Duration: 0:9:23"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 3:51:35 AM, LOS: 4/16/2015 4:01:48 AM, Max El: 26.4411919922669, Duration: 0:10:13"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 5:27:57 AM, LOS: 4/16/2015 5:38:25 AM, Max El: 48.4822775571481, Duration: 0:10:28"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 7:05:40 AM, LOS: 4/16/2015 7:11:59 AM, Max El: 4.32559226934371, Duration: 0:6:19"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 8:33:25 PM, LOS: 4/16/2015 8:38:50 PM, Max El: 2.91680433892038, Duration: 0:5:25"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 10:06:28 PM, LOS: 4/16/2015 10:16:55 PM, Max El: 39.7611374230477, Duration: 0:10:27"));
passes.Add(PassDetails.Parse("AOS: 4/16/2015 11:42:57 PM, LOS: 4/16/2015 11:53:17 PM, Max El: 29.5297313416365, Duration: 0:10:20"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 1:20:32 AM, LOS: 4/17/2015 1:29:57 AM, Max El: 14.6690480107132, Duration: 0:9:25"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 2:57:34 AM, LOS: 4/17/2015 3:07:26 AM, Max El: 19.6236118010221, Duration: 0:9:52"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 4:33:56 AM, LOS: 4/17/2015 4:44:34 AM, Max El: 82.6857963517039, Duration: 0:10:38"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 6:10:51 AM, LOS: 4/17/2015 6:19:28 AM, Max El: 11.0910877117058, Duration: 0:8:37"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 9:12:57 PM, LOS: 4/17/2015 9:22:44 PM, Max El: 20.3665615637994, Duration: 0:9:47"));
passes.Add(PassDetails.Parse("AOS: 4/17/2015 10:48:42 PM, LOS: 4/17/2015 10:59:17 PM, Max El: 47.5374320453109, Duration: 0:10:35"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 12:26:07 AM, LOS: 4/18/2015 12:35:44 AM, Max El: 16.4480134589767, Duration: 0:9:37"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 2:03:27 AM, LOS: 4/18/2015 2:13:01 AM, Max El: 16.1079783540732, Duration: 0:9:34"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 3:39:56 AM, LOS: 4/18/2015 3:50:27 AM, Max El: 44.3818957685563, Duration: 0:10:31"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 5:16:28 AM, LOS: 4/18/2015 5:26:17 AM, Max El: 21.7274730713609, Duration: 0:9:49"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 8:19:48 PM, LOS: 4/18/2015 8:28:18 PM, Max El: 10.3331780917098, Duration: 0:8:30"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 9:54:35 PM, LOS: 4/18/2015 10:05:16 PM, Max El: 88.9197284694397, Duration: 0:10:41"));
passes.Add(PassDetails.Parse("AOS: 4/18/2015 11:31:40 PM, LOS: 4/18/2015 11:41:36 PM, Max El: 20.3021905397441, Duration: 0:9:56"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 1:09:11 AM, LOS: 4/19/2015 1:18:36 AM, Max El: 14.561646908938, Duration: 0:9:25"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 2:45:54 AM, LOS: 4/19/2015 2:56:09 AM, Max El: 28.1007507632301, Duration: 0:10:15"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 4:22:15 AM, LOS: 4/19/2015 4:32:41 AM, Max El: 43.0119567507576, Duration: 0:10:26"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 6:00:11 AM, LOS: 4/19/2015 6:05:57 AM, Max El: 3.42714577481252, Duration: 0:5:46"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 7:27:17 PM, LOS: 4/19/2015 7:33:19 PM, Max El: 3.78630476752949, Duration: 0:6:2"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 9:00:40 PM, LOS: 4/19/2015 9:11:09 PM, Max El: 44.6412388690868, Duration: 0:10:29"));
passes.Add(PassDetails.Parse("AOS: 4/19/2015 10:37:13 PM, LOS: 4/19/2015 10:47:30 PM, Max El: 27.7706266135631, Duration: 0:10:17"));
return(passes);
}
public static PassDetails Parse(string passText)
{
PassDetails pass = new PassDetails();
//AOS: 2015-4-13 0:5:39.0 UTC, LOS: 2015-4-13 0:16:18.0 UTC, Max El: 72.9662819114617, Duration: 0:10:39
string[] tokens = passText.Split(new char[] { ',' }, 4);
pass.aos = DateTime.Parse(tokens[0].Substring(5));
pass.los = DateTime.Parse(tokens[1].Substring(5));
pass.max_elevation = Util.DegreesToRadians(double.Parse(tokens[2].Substring(8)));
return(pass);
}
public static List <PassDetails> GeneratePassList(CoordGeodetic user_geo, SGP4 sgp4, DateTime start_time, DateTime end_time, int time_step)
{
List <PassDetails> pass_list = new List <PassDetails>();
Observer obs = new Observer(user_geo);
DateTime aos_time = null;
DateTime los_time = null;
bool found_aos = false;
DateTime previous_time = new DateTime(start_time.Ticks());
DateTime current_time = new DateTime(start_time.Ticks());
while (current_time < end_time)
{
bool end_of_pass = false;
/*
* calculate satellite position
*/
Eci eci = sgp4.FindPosition(current_time);
CoordTopocentric topo = obs.GetLookAngle(eci);
if (!found_aos && topo.elevation > 0.0)
{
/*
* aos hasnt occured yet, but the satellite is now above horizon
* this must have occured within the last time_step
*/
if (start_time == current_time)
{
/*
* satellite was already above the horizon at the start,
* so use the start time
*/
aos_time = start_time;
}
else
{
/*
* find the point at which the satellite crossed the horizon
*/
aos_time = FindCrossingPoint(
user_geo,
sgp4,
previous_time,
current_time,
true);
}
found_aos = true;
}
else if (found_aos && topo.elevation < 0.0)
{
found_aos = false;
/*
* end of pass, so move along more than time_step
*/
end_of_pass = true;
/*
* already have the aos, but now the satellite is below the horizon,
* so find the los
*/
los_time = FindCrossingPoint(user_geo, sgp4, previous_time, current_time, false);
PassDetails pd = new PassDetails();
pd.aos = aos_time;
pd.los = los_time;
pd.max_elevation = FindMaxElevation(user_geo, sgp4, aos_time, los_time);
pass_list.Add(pd);
}
/*
* save current time
*/
previous_time = current_time;
if (end_of_pass)
{
/*
* at the end of the pass move the time along by 30mins
*/
current_time = current_time.AddMinutes(30);
}
else
{
/*
* move the time along by the time step value
*/
current_time = current_time.AddSeconds(180);
}
if (current_time > end_time)
{
/*
* dont go past end time
*/
current_time = end_time;
}
}
;
if (found_aos)
{
/*
* satellite still above horizon at end of search period, so use end
* time as los
*/
PassDetails pd = new PassDetails();
pd.aos = aos_time;
pd.los = end_time;
pd.max_elevation = FindMaxElevation(user_geo, sgp4, aos_time, end_time);
pass_list.Add(pd);
}
return(pass_list);
}
