Zauto Overview

The RVP Doppler signal processors output calibrated values of the equivalent radar reflectivity factor. Zauto is an interactive graphic utility for calibrating the reflectivity offset of the signal processor. The results are stored in a calibration file that is loaded into the DSP for use during programmed radar data collection.

For information on the theory of signal processor calibration, see RVP10 User Guide (M212604EN).

To perform a calibration, a calibrated RF signal generator (siggen) must be used. Zauto can be used with a manually controlled siggen or a siggen controlled by the RCP. For manual operation, it is most convenient if the signal generator control can be located near the workstation where Zauto is run. The siggen should be configured for CW operation rather than pulse mode.

Setup allows you to input any losses that are present in the system, such as:

• Loss between the transmitter and the antenna feed
• Loss between the antenna feed and the receiver
• Loss between the test signal injection point and the receiver

  This must include the loss suffered in the cable that connects the siggen to the injection point, the coupler loss, and any calibration required for the signal generator.