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    Re: Fluxgate compass
    From: George Huxtable
    Date: 2002 Feb 3, 10:19 +0000

    A friend and listmember has mailed me recently, off-list, referring to the
    heading-sensor discussion, and crediting me with some authority as being a
    specialist on such matters. That is an impression that it would be wise to
    dispel. It is useful to know from what level of authority opinions on this
    list are coming. So may I quote, on-list, from my reply to him?
    "It seems that my pose as a gyro guru has taken you in! But in reality, I
    have only an amateur's knowledge about such matters.
    I am really an ex-physicist of many years ago, diverted into electronic
    instrumentation related to research in nuclear science (now long retired).
    This has led me in all sorts of interesting directions, one of which has
    been that of control systems, where they have been subject to external
    disturbances. So I admit to having a bit of experience in that field.
    My contributions to the discussion about magnetic course sensing, such as
    they have been, are really based on arguments from first-principles,
    however, and not on any grounding in steering-technology itself. I have no
    specialist knowledge about the matter, none at all. I'm just a fellow who
    likes to understand how things work, in some detail. I have observed the
    defects of the common steering systems, using a magnetic reference and a
    gravity reference, in rough weather, over many years. Thought about it a
    lot, and about how it could be improved. It's that which has led me to
    counter some of the woolly-thinking that the list has shown up, about that
    I'm glad it sounded convincing, but my views should not be given too much
    respect. I can be just as wrong as the next man!"
    Hope that helps.
    George Huxtable.
    George Huxtable, 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    Tel. 01865 820222 or (int.) +44 1865 820222.

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