Antenna@Station specification

A fully qualified antenna specification can also include the station name via the ANT@STATION syntax. STATION specification follows the same rules as antenna specification. When antenna or station in a ANT@STATION syntax is a comma-separated list, the list must be enclosed in a left- and right-parenthesis pair to distinguish it from a comma-separated list of ANT@STATION (i.e., "A1@S1, A2@S2, A3@S3" versus "(A1,A2,A3)@(S1,S2,S3)"). All antennas in the ANT part of the specification on any of the stations in the STATION part of the specification will be selected. The ANT part of the specification is optional and when not specified is replaced with the wild-card "*" (i.e. "@STATION" is equivalent to "*@STATION").

The two forms of specifications that are interpreted differently are:

1. List of ANT@STATION: A1@S1, A2@S2, A3@S3,....
2. (List of ANT)@(List of STATION): (A1, A2, A3)@(S1,S2,S3)

First form is similar to the comma-separated list of antenna specifications used to construct the baseline to be selected (see Section 3.1.3). The latter will select all members of the antenna list that are on any of the stations listed in the station list. E.g. if antenna A1 appears on stations S1 and S3, both will be selected in the second form, but only the antenna A1 on station S1 will be selected in the first form. Note that the second form of specification can itself be a member of a comma-separated list.