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Document Title: 46
User’s Manual for the GPS Orion-S/-HD Receiver
Document No. Issue 1.0
GTN-MAN-0110 June 22, 2003
DLR/GSOCNo part of this document shall be reproduced in any form or disclosed to third parties without prior authorization.
4.5.2 $PDLRM,IIP Instantaneous Impact Point Data
The $PDLRM,IIP sentence provides the predicted instantaneous impact point and time to
impact.
If valid navigation data are available and a prediction for the impact point is computed then
the following sentence is generated:
Quantity Format Units # of Chars Range
Sentence identifier CCCCC 5 'PDLRM'
single comma C 1 ','
Secondary identifier CCC 3 'IIP'
single comma C 1 ','
UTC (time) of current IIP
predition
hhmmss.ss h = hours (int)
m = minutes (int)
s = seconds (float)
9 000000.00 to
235959.99
single comma C 1 ','
IIP validity flag C (see note 1) 1 '1'
single comma C 1 ','
Latitude of predicted IIP ddmm.mmmm d = degree (int)
m = minutes (float)
9 0000.0000 to
8959.9999
single comma C 1 ','
Latitude Direction of pre-
dicted IIP
C 1 'N' or 'S'
single comma C 1 ','
Longitude of predicted IP dddmm.mmmm d = degree (int)
m = minutes (float)
10 00000.0000 to
17959.9999
single comma C 1 ','
Longitude Direction of pre-
dicted IIP
C 1 'E' or 'W'
single comma C 1 ','
Predicted time to impact FFFF.FF seconds 7 0000.00 -> 9999.99
Nominal number of characters (including sentence header and trailer) = 54 + 6 = 60
Notes:
1) IIP Validity flag: 0 = No IIP prediction computed due to missing navigation data.
1 = Valid IIP data
Example:
$PDLRM,IIP,120210.00,1,6834.1988,N,02045.0462,E,0629.76*13<CR><LF>