Microwave Landing System - Present Status?

Date:         28 Dec 96 14:20:10 
From:         "JG.Campbell" <jg.campbell@ulst.ac.uk>
Organization: University of Ulster
Followups:    1 2 3
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Back in 1976, when working for the Plessey Company, we did a lot of
simulation and feasibility work for the British CAA (Civil Aviation
Authority) on a standard for a microwave landing system. The US (FAA,
Bendix and Hazeltine) had proposed a time-reference scanning beam system
(TRSB) whilst CAA took the side of a Doppler scanning system (proposed
by a British company STL); eventually ICAO adopted the US system.

Does anyone know of the status of the project? Waiting for the fog to
clear from London-Heathrow a few weeks ago, the ICAO term
'all-weather-operations', which sadly it wasn't, returned to me. Also,
anyone know of the fate of Hazeltine & Bendix -- I assume swallowed up
in mergers?

Best regards,

Jon Campbell
Jonathan G. Campbell, ISC/ISE, University of Ulster, Magee College,
Derry, BT48 7JL, Northern Ireland. tel +44 1504 375367, fax 370040.
JG.Campbell@ulst.ac.uk            http://www.iscm.ulst.ac.uk/~jon/