DATE - Depot Aperture Tuning Equipment for the ERIEYE Airborne Early Warning System

摘要

DATE is a portable, rapid assembled, planar near field measurement system for ERIEYE Airborne Early Warning System. DATE shall be used both as a production range at Ericsson Microwave Systems (EMW) and as a maintenance equipment delivered with the ERIEYE AEW System.rnUp to now ERIEYE has been measured and phase aligned at EMW's large nearfield range. The active antenna is interfaced through a Beam Steering Computer (BSC) and hardware interface. The disadvantages with this approach is a slow communication speed and reduced Built In Test. Since the large nearfield range is designed to meet the requirements from many different antenna types the transport, mounting, alignment and range error analysis are very time- and personnel consuming.rnThe DATE-scope is to provide a portable planar near field test system that's custom-made for ERIEYE. The time from stored system to completed measurement shall be very short and performed by a "non antenna test engineer". This is done by:rn1. Incorporate the BSC as a radar-mode.rn2. Use the radar receiver and transmitter for RF-measurement.rn3. Reduce alignment time and complexity by a common alignment system for antenna and scanner. Scanner alignment for very high position accuracy.rn4. Automatic Advanced Data Processing: Transformation from near field to far field to excitation to new T/R-module setting-up-table in one step.