In this article, you will learn about Dual Frequency GPS, let’s get started with the introduction.
What is Dual-Frequency GPS?
GPS is a satellite-based navigation system that uses signals from at least three satellites. The satellites are placed in orbit above the Earth, and each one transmits information about its own location and velocity to other satellites. This allows receivers on the ground (like your phone) to determine their own position by measuring how long it takes signals from each satellite to pass through them.
GPS uses two frequencies: L1, which has a bandwidth of 12 MHz; and L2, which has a bandwidth of 1 MHz. These frequencies can be used at different times so that they don’t interfere with each other when they’re both transmitting at once—but only during certain periods in between them!
A Brief History of GPS
The story of GPS began in the 1960s with the invention of a device called the “navigational aid.” This device helped pilots navigate through unknown territory by providing them with accurate information about their location and direction. The first version of this navigational aid was developed by John W. Latham and Haldun Gürtler, two engineers at Harvard University who worked on it for more than 10 years before they decided to commercialize it as a product called Transitron (a name that would later change).
In 1974, they founded Trimble Navigation Limited (TML) in Canada to mass-produce their technology under license from Harvard University
The First Receiver ICs
The first receiver ICs were expensive and not very accurate. They also had a high update rate, which meant that it took longer for the system to recover from errors than later receivers.
The first receiver ICs also had a high power consumption, which made them unsuitable in applications like medicine where they needed to stay on all day at low temperatures.
Finally, these early receivers were large and not very small—they would only fit inside your phone’s body if you used one of those fancy cases!
Smartphones Get into the Action
Smartphones are the most popular GPS device, but they’re not as accurate as dedicated receivers. This is because smartphones need to be connected to a network in order to get their location information from satellites. The GPS chip inside your phone uses cellular towers and radio waves from those towers to calculate its location, but there are no built-in sensors on these devices that can tell you how far away you are from any particular point in space.
A good rule of thumb when using a smartphone for outdoor activities is: If you don’t know where something is located (like an unfamiliar trail), then it’s best not to go there until someone else tells you where it is!
Is it worth the trouble?
If you’re looking to improve your GPS accuracy, then yes. If not, then no. It depends on what your needs are and how much money you have available to spend on a new receiver.
So, does it work? It depends on what you’re doing. If you just want to play Pokemon Go, yes—it works great. But if you need a more accurate location fix for other purposes, then it might be worth investing in a better receiver chip or GPS antenna (like one from Garmin).