--> ANTPHC

                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
ANTPHC                                                                            
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
1-6     A6     ANTPHC - Requests the input of tables with
                        antenna specific corrections to be
                        used with GPS phase data. The
                        antenna corrections are input on 
                        unit 22. When this option is invoked
                        column 10 of the INSTRMNT card
                        (STATION POSITION SUBGROUP) is used
                        to identify the type of antenna used
                        at each station. For satellite antennae
                        the antenna number is obtained from
                        columns 11-12 of the OFFSET card.
                        The tables input on unit 22 must contain
                        2664 corrections for each antenna.
                        There is a separate phase correction for
                        each 5x5 degree block of azimuth and
                        elevation from elevation -90 degrees to
                        +90 degrees (37 values of elevation)
                        and from azimuth 0 degrees to 360 degrees
                        (72 values of azimuth) (2664=37x72).
                        As many as 49 antenna types can be input
                        simultaneously on unit 22. The table
                        of corrections for each antenna must
                        begin with a line that has 8 charac-
                        ters starting in column1:
                        ANTNO=NN
                        where NN is an integer from 1 through
                        49. After that there must be 333 lines
                        of antenna corrections. Each line 
                        contains 8 corrections (8D10.4). The 
                        first 9 lines are devoted to the 85-90
                        degree elevation block. The next 9
                        lines are devoted to the 80-85 degree
                        elevation block. The last 9 lines are
                        devoted to the (-85)-(-90) elevation
                        block. The first of the 9 lines for

SEP 2002

0209.0

GLOBAL SET

ANTPHC (cont)

                              

                        each elevation block begins with the 
                        0-5 degree azimuth block. The second
                        of the 9 lines for each elevation
                        block begins with the 40-45 degree
                        azimuth block. The correction is in
                        meters. A positive number mean that 
                        the antenna has caused the range
                        corresponding to the phase to be too
                        long. The correction will be subtracted
                        from the raw observation.

                        See also INSTRMNT card



2002-08-12