Appendix C. Passive IRIS
Features
C.1. Passive IRIS Overview
For most installations, IRIS actively controls the radar and antenna through the RVP
processor and the RCP.
For some installations, the radar and antenna are controlled by an external RCP and IRIS is
connected to the radar by the signal processor. In this case, the external control system
performs the scanning and IRIS listens to the signal processor in passive mode.
In passive mode, the radar tasks in IRIS are
configured to match the scanning performed by
the external control system and IRIS synchronizes to the external scanning. That is, IRIS
deduces which TASK should be running, starts the TASK, and acquires the TASK data from
the signal processor.
Passive IRIS requires that antenna angle information be supplied to the RVP.
Use Cases For Passive IRIS
• If IRIS is installed in parallel with an existing data acquisition system. The existing
system does its own thing and IRIS follows.
• If 2 radars at
dierent frequencies (and correspondingly 2 IRIS's) share the same
antenna. In this case, one of the IRIS systems can operate in active mode and the other
operate in passive mode to allow simultaneous data collection from both radars.
Another application is when using time series playback.
More Information
‣
Using Passive IRIS (page 77)
C.2. Task
Configuration, Scheduling, and
Synchronization
Passive IRIS must determine what the active system is doing and then follow along acquiring
when data. The TASK
Configuration and TSC Monitor menus must be configured for this to
work.
Task Configuration
For each task run by the active system, you must configure a corresponding task to run on
the passive system. For example, if the active system runs a volume scan, you must
configure a corresponding volume scan in the passive system with the same elevation
angles.
Appendix C – Passive IRIS Features
99
