Maybe you don’t see a lot of GPS issues over Russia is because they have the GLONASS system back up and running again? Think they were up to a full count of 26 GLONASS M and K series birds a couple years back. Although they have had a series
of unfortunate issues with software bugs, exploding batteries and human errors that have at times put the system out of service but as far as I know its still active. China has there BeiDou system that’s currently in its third generation of a combo of geostationary
and mid orbit birds that they say is more accurate then our GPS, they have 35 birds and require 30 for full implementation. Outside China Pakistan and the Saudi Ministry of Defense have all bought into using BeiDou and think they may also have an agreement
to share codes and frequencies with the GLONASS and the EU Galileo system, although they have been having a hard time keeping time! The EU system, not the Chinees.
The North Koreans, who knows what they are using. Probably a compass and a ball of string.
Like the GPS error map, never saw that before.
Ray F/KA3EKH
From: [email protected] <[email protected]>
On Behalf Of MARK DORNEY via MRCA
Sent: Monday, November 25, 2024 7:57 PM
To: [email protected]
Cc: [email protected]
Subject: Re: [MRCA] eLORAN question
The map shows interference problems over the Middle East, Western Europe, and North America ( mostly the USA ). Interesting that there are no problems over China, most of Russia, and North Korea.
Mark D.
WW2RDO
“In matters of style, float with the current. In matters of Principle, stand like a rock. “. - Thomas Jefferson
Sent from my iPhone
On Nov 25, 2024, at 7:37 PM, sbjohnston--- via MRCA <[email protected]> wrote:
GPS/GNSS outages are a real problem. My research seems to point to four main issues:
- GPS jamming.
- GPS spoofing.
- Environmental noise interference.
- Unintentional interference from other radio services.
Air safety is driving concern but of course it is an issue for all GPS users.
Here's a map showing GPS loss incidents for Aug 2021- Dec 2022: