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Never used a GPS before? This great video talks through the basics and tells you everything you need to know to get started.
- 5 min
- 923
- Blacks Outdoors
In association with Garmin, LFTO and Country Walking's Nick Hallissey takes a look at what an entry level hand-held satnav/GPS device has to offer.
- 5 min
- 239K
- CountryWalking
How Does GPS Work? GPS receivers use a constellation of satellites and ground stations to compute position and time almost anywhere on earth.
- 13 min
- GPS Is Satellite Based Radio
- GPS Is Really GNSS
- The GPS Signal
- How GPS Determines Your Position
- How Accurate Is GPS?
- What Causes GPS Inaccuracy?
- New GPS Bands
- GPS Helpers
- GPS Positioning Today and Beyond
- GPS Tips
When people say "GPS" they are referring to a system of navigation that pinpoints your position on earth by using signals from radio satellites orbiting the earth. All you need to get your position is a GPS receiver. Almost all smartphones have a GPS receiver built-in today. A GPS receiver does not transmit any signals, all it does is receive GPS d...
The acronym GPS (Global Positioning System) is generally used synonymously with the more accurate acronym GNSS (global navigation satellite system). Why? Because GPS was the first worldwide satellite positioning system, started in 1993 by the US Government (now run by Space Force). GPS was originally conceived by the Department of Defense for the m...
If you're familiar with AM or FM radio, you know that stations have a radio frequency. For example, in Southern California, you can tune your car radio into KPCC public radio on FM 89.3, or 1070 KNX on AM. GPS signals are similar, but instead of AM or FM, they are on something called the L-Band, which roughly lies below the band used for AM radio. ...
At a minimum, your GPS receiver needs three satellite signals (aka "fixes") to determine your position, which is called trilateration. Remember the theory of relativity? Because time moves faster for objects with less gravity, like GPS satellites, their clocks get 38 microseconds faster than earth clocks every day. That equates to about 6 miles of ...
According to the official US Government website for GPS, most consumer GPS units are accurate to a 16 feet radius. On newer multi-band GPS units, you can get a 6 foot accuracy regularly. Other multi-GNSS units usually fall around 9-16 ft. Now how this figure is actually generated is part of the secret sauce in the GPS unit and you have to take that...
In an ideal world, your GPS unit would receive four perfect GPS signals with no interference, read all the information, and calculate a precise position. But in the real world, there are factors that can degrade the GPS signal as it travels the 12,550 miles from space to earth. The effect of GPS signal interference is bad or incomplete GPS data. A ...
I mentioned that the first GPS constellation became operational in 1993. Well since then, technology has progressed and GPS has as well. Today the US is launching the third generation of GPS, aptly named GPS 3. For the GPS end-user, this equates to new GPS bands. Here's what the GPS bands are all about. New GPS satellites are backward compatible. S...
In an ideal world, your GPS would be 100% accurate, but as you've seen, it's not the reality with the current GNSS systems. So various entities have come up with ways to improve the GNSS positioning experience. Brace yourself of an onslaught of acronyms.
Modern GPS chipsets can receive multiple signals from multiple GNSS systems simultaneously. From there, they can evaluate factors such as the signal quality and strength, pick the best options, and then calculate your position. They can also use different combinations of satellites and signals to simultaneously calculate multiple position fixes and...
If you need to choose between multiple GNSS bands or multi-band signals within one GNSS (like L1 & L2C & L5 in GPS), I've found that the multi-band within one system outperforms multiple GNSS systems.One of the main power draws on a GPS unit is the GPS chipset use. If you have the GPS chipset working at full bore, recording every second using multiple GNSS systems, it's going to consume more po...Turn on WAAS if you have it and are okay with the battery drain.Turn off "smart recording" and enable every-second tracking if you have that option. "Smart recording" uses inputs such as the accelerometer and heart rate to determine what data points to save, bu...GPS Basics. Have you ever wondered how the GPS unit in your phone or car works? Or what the difference is between a handheld GPS and the equipment that surveyors and scientists use? Or who operates the satellites and why it was created? This tutorial will address these questions and provide you with insight into how GPS is used by geoscientists.
Sep 23, 2016 · Quick Links. From Satellites to the Palm of Your Hand. How GPS Determines Your Location. Alternatives to GPS. We already live in the future. We have handheld devices that use satellites to pinpoint our precise locations almost anywhere on the planet. But have you ever wondered just how GPS works?
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All you need to know about GPS in less than 10 minutes. #HowGPSWorks #GPS #GlobalPositioningSystem #OnlineTraining Subscribe for more videos like this https...
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