Rather than try to explain it, this is from Collins:
The Rockwell Collins
MultiScanTM Hazard Detection System is the first and only radar that analyzes and determines actual weather hazards, not simply atmospheric moisture content to provide flight crews more accurate weather returns. The MultiScan system is derived from extensive operational experience to create a fully automatic, hands-free airborne radar system that reduces pilot workload and enhances safety and passenger comfort by minimizing unexpected turbulence encounters, and provides optimal clutter-free weather displays.
Learn more about MultiScan at Rockwell Collins’ Web site:
http://www.rockwellcollins.com/products/cs/at/avionics-systems/weather-hazard/science/index.html
Key Features & Benefits
- Fully automatic operation
- Advanced ground clutter suppression at all ranges
- Enhanced geographic and seasonal weather correlation for maximum worldwide performance
- Optimized weather detection from 0 to 320 NM and all altitudes
- OverFlight™ Protection (prevents inadvertent thunderstorm top penetration)
- SmartScan™ real time weather in turns
- TrueZero™ antenna compensation
- Predictive windshear detection with magnitude, velocity and duration data recording and retrieval
- Variable temperature based gain
- Certified turbulence detection
- Redesigned RF section for improved performance and enhanced reliability
- Demonstrated industry-leading pedestal reliability
- Simultaneous display updates in all range/mode combinations
- Split Function Control on some platforms
- Optional manual mode can be used by crews at any time
You can buy the automated radar with 20 years of improvements one time, or forever train and re-train pilots. Do you have any idea how much the airlines should be spending on training for a 30 year old system?