When these services become available, they will only be location based. Another words, most GPS's these days will actually give you your current altitude and most have a pretty fast refresh rate. The refresh rate is the time between position updates. An example; If you have a GPS in your hand that refreshed three times per second, this would be a very acturate reading. Even if you are driving at 70 miles per hour, the moving map on the GPS will be able to keep up with your actual location. That's an issue the engineers are dealing with on the Location Sensitivity system. It wasn't designed to have any type of refresh rate at all. Once a position has been found, it never was designed to refresh that position. (I guess if you are hurt, and you called 911, you aren't supposed to be moving. Hmmm, So if you fell off a bridge, and landed in the back of a truck driving down the interestate, I'm not sure if they would be able to locate you. They would know where you were when you!
first dialed 911, but as your location changes, they might not be able to find you). Supposedly, the 911 operator can pull a refresh, this would at least tell them the direction the vehicle is moving. But to locate you while you're moving, might be more difficult than anyone had expected.
Another problem with many of the handheld units, the actual speed of the processors within them. Most cell phones operate on around 1 to 2 MHz processor speed. Most Smartphones operate anywhere between 30 to 500 MHz. (Most new home computers are operating between 2 to 4 GHz processor speed, just to give you an idea). This is where the engineers are running into the biggest problem with creating a GPS refresh rate. The processors in all handhelds will just have to be faster than they are today. And like all of our other technolgies, I'm sure this won't be a problem very much longer for the designers.
Hmmm, soon we'll have Pentium 9 cellular and Smartphones running at 8 GHz processor speed! You know it's going to come to this, and it's not that far away.
To see how to use your handheld like a professional, send an email with "ebook" in the subject to receive a free version of the ebook at: ebook@robertlett.com
Find out more of what it's all about: www.robertlett.com/whatisit5.htm
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by: Robert Lett
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