Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Maximum likelihood position with triangle on a sphere
    From: David Pike
    Date: 2018 Oct 19, 10:34 -0700

    Bill Lionheart you wrote:
    I was thinking of related problems on the sphere. Some of which I can
    solve and some I don't know how to solve yet.

    For example suppose we have three great circle position lines with
    some sensible  assumption about the errors. For example radio
    direction finding from distant stations.

    Unless you’re a glutton for punishment Bill, I would steer clear of starting with distant radio lines.  Firstly, your normal distribution will widen out with distance from the transmitter.  Secondly, depending upon which type of chart you’re using, the angle you measure at the receiver may not be the angle you plot from the transmitter.  E.g. with a Mercator chart you have to allow for conversion angle, which requires a ch long.  My head’s still hurting from last time.  DaveP   

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site