sat nav

A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows satellite navigation devices to determine their location (longitude, latitude, and altitude/elevation) to high precision (within a few centimetres to metres) using time signals transmitted along a line of sight by radio from satellites. The system can be used for providing position, navigation or for tracking the position of something fitted with a receiver (satellite tracking). The signals also allow the electronic receiver to calculate the current local time to a high precision, which allows time synchronisation. These uses are collectively known as Positioning, Navigation and Timing (PNT). Satnav systems operate independently of any telephonic or internet reception, though these technologies can enhance the usefulness of the positioning information generated.
A satellite navigation system with global coverage may be termed a global navigation satellite system (GNSS). As of September 2020, the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's BeiDou Navigation Satellite System, and the European Union's Galileo are fully operational GNSSs. Japan's Quasi-Zenith Satellite System (QZSS) is a (US) GPS satellite-based augmentation system to enhance the accuracy of GPS, with satellite navigation independent of GPS scheduled for 2023. The Indian Regional Navigation Satellite System (IRNSS) plans to expand to a global version in the long term.Global coverage for each system is generally achieved by a satellite constellation of 18–30 medium Earth orbit (MEO) satellites spread between several orbital planes. The actual systems vary, but all use orbital inclinations of >50° and orbital periods of roughly twelve hours (at an altitude of about 20,000 kilometres or 12,000 miles).

View More On Wikipedia.org
Recent contents Top users
  1. Tommy4

    MG4 Trophy Sat Nav activation

    Hi, Just bought the MG4 Trophy LR and when I wanted to use the Satellite navigation, message comes to Grant Permission in Settings. When I do that, I can’t find any checkbox to confirm. Has anyone done that before?
  2. M

    Sat Nav Questions

    Hi guys, Looking to go MG4 (oil leaks aside!). Pretty impressed on the test drive. I didn't however play around with the sat nav while I was on the test drive though so a couple of questions for those who have the Trophy. When you program in a destination does it just show you the route or does...
  3. G

    MG4 Audio on sat nav

    I’ve only had my mg4 for a few days but loving it. I have used sat nav which works well but I don’t get any audio while in use. I can’t find a volume control , only a mute. If this is normal I can put up with it but like to be warned of upcoming events.
  4. Seawolf

    Updating Sat Nav

    There are times when the satnav in my HS Plug In Hybrid works perfectly, and other times when it just refuses to work when I put an address, or post code in. I THINK I have sussed why. It doean't seem to like addressed where the streets are of fairly new housing. So my question is ..... How...
  5. S

    New ZS sat nav not working

    I have seen previous discussions and have tried switching off “dead reckoning” but still can’t get sat nav working. It accepts a destination and gives initial instructio but doesn’t track the car movement. Disappointing on a brand new car. Will it need the dealer to fix this or are there any...
  6. S

    Frustration with sat nav and ex-toll bridges

    I have had some problems this Summer holiday trip in my Mark 1 MG ZS ev. On the way to Pembrokeshire the car's sat nav did not like my chosen route of crossing the River Seven M4 bridge, that no longer has a toll (since before the car was built!). Not too much of a problem as I knew where I was...
  7. B

    Sat Nav not picking up speed cameras

    Hi ALL, just taken delivery last week of a brand new MG HS PHEV Excusive, here in the UK. The sat nav seems unable to detect speed cameras, I have had the latest updated routes downloaded by the dealer and all the cameras in the menu are set to audio and visual. I have raised this matter with...
  8. S

    Sat nav problem ZS trophy long range

    Hi everyone. Picked up my ZS trophy long range on Wednesday and I love it. Apologies,because I bet this has been mentioned before but my sat nav doesn't seem to be working. The dealership put my home address into the destination favourites but when I press on it, the screen shows my current...
  9. peterseddon

    Sat Nav

    How do you store favourites? I must be being a bit thick but I cant do it from the car screen and the travel section in the app is rubbish.
  10. S

    Sat Nav maps version

    Hey I know there has been talk about the sat nav maps being out of date. In London over the last year or so there has been a large number of roads blocked near schools and to cut traffic down in side streets. I am wondering if anyone in London has noticed the maps being unusable if they are...
  11. E

    MG ZS EV Sat Nav brightness

    Is there anyway the brightness on sat nav screen on the LR ZS can be increased, mine looks like it is in night mode permanently. I have been through the settings without success.
  12. H

    Volume on mg zsev sat nav

    Does anyone know how to turn on volume on new mg zs Iv e managed to reset say nv,but no voice sound
  13. C

    Deleting addresses from the sat nav

    I would welcome advice please on how to delete obsolete addresses from my HS PHEV Exclusive that I purchased in July last year. I have looked at the information in the book provided but can’t seem to raise the screen that’s shown in there under ‘with a planned route ‘ which then shows option 4...
  14. G

    Sat Nav upgrade

    Is there an upgrade or can one be purchased because current system does not give any indication of delays or issues on planned route ahead or suggest alternative routes like most other Sat Nav systems on modern cars.
  15. M

    Sat Nav dead reckoning setting on SR

    Can anyone guide me where to find the sat nav dead reckoning setting on SR Trophy please.I checked all nav settings and general settings but couldnt find it.
  16. P

    Sat nav updating

    How do you update a mg5 ev sat nav
  17. D

    Dead reckoning on Sat Nav

    Can anyone explain what the dead reckoniing switch does?
  18. K

    MG ZS EV Sat Nav

    Hi all Got my new ZS EV Trophy a couple of weeks ago but I can’t get the sat nav to work - has anyone encountered any issues in this regard? I’m worried I’m doing something stupid!!
  19. B

    Sat nav volume

    Can anybody tell me how to turn up the volume of the sat nav audio.im nearly cross eyed searching manuals cant seem to find it
  20. E

    ZS Long Range sat nav not updating

    Hi all, Any one with the face lift having problems with the built in sat nav. When I start the car the location is right. But when I start driving it doesn't show any movement on the map. I use carplay so not a big deal but wondered if anyone has had similar issues and if they managed to fix...
Back
Top Bottom