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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Glonass goes dark
    From: Greg Rudzinski
    Date: 2014 Apr 8, 20:38 -0700

    See also.

    http://en.wikipedia.org/wiki/WAAS

    GPS is improved with the use of WAAS which are in geostationary orbit.

    Re: Glonass goes dark
    From: Greg Rudzinski
    Date: 2014 Apr 8, 20:01 -0700
    Jackson,

    Nav satellites are in medium earth orbit. See link.

    http://en.wikipedia.org/wiki/Medium_Earth_orbit

    Greg Rudzinski


    Re: Glonass goes dark
    From: Jackson McDonald
    Date: 2014 Apr 9, 02:38 +0000
    First, I was surprised by the following sentence in the article: "According to another source, a GLONASS fix could not take effect until each satellite in turn passed back over control stations in the Northern Hemisphere to be reset, thus taking nearly 12 hours."

    At the risk of displaying my ignorance, I had assumed that GLONASS, GPS, and other global positioning satellites were in geo-synchronous orbits. If so, they are fixed and don't pass over control stations at intervals. I profess no expertise in this area and would welcome clarifications and corrections from other, more knowledgeable members of this group.

    Second, given the recent tensions in East-West relations over Ukraine, one could logically ask whether the ephemeris data was intentionally corrupted in order to render the GLONASS system dysfunctional.

    Does the Russian military depend solely on GLONASS, or do they also use GPS?

    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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