pcap [ parameter=value ... ]
Parameters are: receiver_lat, receiver_lon, min_rec_elev, target_lat, target_lon, min_targ_elev, satellite, sensor, start_date, num_days, printout.
pcap determines the Points of Closest Approach (PCAPs) for a given satellite and sensor relative to the target and/or receiver location. The PCAPs are reported using the satellite elevation angle above the horizon, the azimuth angle from north, and the distance to subtrack (km).
This function does not require the specification of any input or output TeraScan datasets.
Latitude of the receiver (antenna).
See formats for specification of latitude and longitude formats. The default value is retrieved from the file last_location.
Longitude of the receiver (antenna).
See lat_lon_formats for specification of latitude and longitude formats. The default value is retrieved from the file last_location.
Minimum allowable satellite elevation with respect to the receiver to use in reporting the PCAPs.
Valid responses are [0 to 90]. The default value is 0.
Latitude of the target.
See formats for specification of latitude and longitude formats. The default value is retrieved from the file last_location.
Longitude of the target.
See formats for specification of latitude and longitude formats. The default value is retrieved from the file last_location.
Minimum allowable satellite elevation with respect to the target to use in reporting the PCAPs.
Valid responses are [0 to 90]. The default value is 0.
This is the name of the satellite in lower case.
This is the sensor name entered in lower case.
The default is avhrr.
This is the date to begin reporting PCAPs.
Any valid date is allowed, see formats. There is no default.
This is the number of days to report PCAPs beginning with start_date.
Valid responses are [> 0]. The default value is 5.
Determines whether the output is sent to the hardcopy device or the screen.
Valid response are [yes or no]. The default is no.
%[7] pcap
receiver_lat : char( 15) ? [32 50.47 N]
receiver_lon : char( 15) ? [117 13.65 W]
min_rec_elev : real ? [0] 5
target_lat : char( 15) ? [32 50.47 N]
target_lon : char( 15) ? [117 13.65 W]
min_targ_elev : real ? [0] 5
satellite : char( 11) ? noaa-11
sensor : char( 5) ? [avhrr]
start_date : char( 15) ? 91/10/12
num_days : int ? [5] 3
printout : char( 3) ? [no]
Target: 32 50.47 N, 117 13.65 W Receiver: 32 50.47 N, 117 13.65 W
5.0 min elev 5.0 min elev
Date Time Distance[km] Target->Satellite Receiver->Satellite
To Subtrack Elevation Azimuth Elevation Azimuth
91/10/12 10:04:41 1169.7 29.36 97.32 29.36 97.32
91/10/12 11:45:13 1140.9 30.10 291.52 30.10 291.52
91/10/12 21:26:47 942.8 35.85 70.06 35.85 70.06
91/10/12 23:07:28 1379.6 23.71 263.95 23.71 263.95
91/10/13 09:53:00 1445.7 22.67 95.84 22.67 95.84
91/10/13 11:33:41 879.9 38.55 289.86 38.55 289.86
91/10/13 21:15:15 1203.1 27.99 68.44 27.99 68.44
91/10/13 22:55:46 1103.6 30.79 262.45 30.79 262.45
91/10/14 09:41:17 1722.6 17.34 94.34 17.34 94.34
91/10/14 11:22:08 616.3 49.86 288.29 49.86 288.29
91/10/14 21:03:43 1460.5 21.93 66.74 21.93 66.74
91/10/14 22:44:05 828.7 40.11 260.95 40.11 260.95
sensorfile, orbdata, last_location
avhrr, ols, xcapcon, etx, fastreg, master, orbit, ephem, passcover
Last Update: $Date: 1998/05/29 20:13:18 $