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Tuesday, January 17, 2012
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Saturday, December 31, 2011
GPS Tracking Devices
Had it not been for a GPS tracking device in OJ Simpson's mobile phone, he would not have been found to be tried on his wife's murder. A GPS tracking device is much like driving around in your car with your mobile phone. It allows a person to locate the current position of a moving vehicle or identify where its been and as well, where it is heading. This is ideal for chasing criminals who has just fled the scene of the crime or finding where a suspicious vehicle will be heading next.
A GPS device calculates its position by measuring distances between itself and other GPS satellites. In return, the signals emitted by the GPS tracking device are transmitted to tracking service provider by cell phone technology. Then this information is made available to you via the internet. Aside from absolute location, other civilian benefits in GPS tracking devices include direction of travel, average speed and time of travel. This information is very valuable to the fleet manager of any business.
Other benefits of GPS tracking devices is the ability to know the location of each vehicle or carrier on a map. This technology can also create a digital view of the vehicles current position in a geographic map which is also an additional feature for vehicles with GPS. This allows you to track vehicles that are operated in remote locations without named roads or operated off road.
More advanced GPS devices can even tell you which turn to take or which roads to take to reach a destination. Life is now easier drivers who simply get in their cars and start their engines without knowing where to go. GPS in vehicles have given eyes to the almost blind driver. The world is much smaller these days as a result of this new technology. For each geographic location we are at, have been or going to, can now be identified with a simple click of a button.
So, if you ever wonder where your car may be, your GPS can track where it is. If for instance your car gets stolen, you can easily find where it is heading or where it currently is. Suppose a vehicle stops in the middle of nowhere because of some car trouble, the driver could easily ask for help, or his location could easily be tracked for emergency assistance, that is for as long as there is a signal and cell phone coverage is available. Real time GPS tracking systems will not work without it. These features will definitely decrease car theft or even robberies with getaway vehicles. This can also give cheating husbands or spouses a second thought on their actions. Moving around in vehicles with GPS can very well ruin a secret affair because of its non-discreet ability to identify ones exact location.
With the advent of such technology, GPS in your mobile phones or GPS in your cars, we are giving away a part of our private lives to know where our vehicles and loved ones are. We are giving up away our privacy and that is a big concern for many people. If you do install a GPS tracking device, then you should expect that somebody else can have access to your tracking information.. But, for as long as knowing where we are can do no harm and you are not doing something illegal, then GPS tracking device information will do us no harm.
Saturday, December 24, 2011
GPS Cat Tracking Collars Can Be Hard To Find
Cat GPS tracking collars seem like a great idea for keeping tabs on your wandering feline. Outfit a tracking collar with a global positioning device that knows its current location at all times. The GPS device can then periodically send its longitude and latitude position to some base station by simply transmitting it over the cellular phone network. Once received, the location information is uploaded to a website which allows you to monitor your cat's location. Not only is this GPS tracking system a good idea, it's already being used in a variety of ways -- from car navigation systems to locating lost hikers.
However, the typical GPS cat tracking system is difficult to locate -- at least in the United States. The main problem is that GPS technology has not been miniaturized to the point of making GPS cat collars small enough and light enough for most household cats. Domestic cats are simply unable to bear the weight of the current GPS electronics and power supply.
The only websites that advertise GPS cat tracking collars seem to be located in Europe, and those particular European devices are fairly large -- weighing over 90g. Most average sized cats would only be able to carry an 80g tracking collar comfortably.
The other downside to GPS tracking collars, and this goes for both cat tracking collars and dog tracking collars, is that GPS collars typically have monthly fees associated with them. This is because the GPS collars will normally utilize the cellular phone networks for transmitting location information and the cellular networks all have monthly charges. So if you wish to avoid monthly fees you will have to use another type of technology for the cat tracking collar.
One of the best options that I have found is to use a short range radio tracking collar. This kind of tracking collar transmits a periodic beacon signal that is detected by a directional receiver. With the receiver you are able to tell in which direction your cat is located by how strong a signal you are detecting. In addition, as you get closer to the radio collar the beacon signal also gets stronger so you can determine both the relative direction and distance to your cat.
These short range radio cat tracking collars have two distinct advantages over the cat GPS collars. First, because they use free radio frequencies you avoid the monthly cellular network fees used by the GPS systems. Second, the electronics used with these short range devices can be made small and light enough for any domestic cat to wear. The tracking system on the collar only has to beacon a weak signal so the amount of electronics and power requirements are low. These types or cat tracking collars just need a small coin battery for power.
There is one disadvantage to using a radio tracking collar. Unlike the cat GPS locators you would not be able to pinpoint the longitude and latitude of your cat since the radio collar does not transmit any exact location coordinates -- just distance and directional information that you can detect via the relative signal strength with the directional receiver. However, since cats usually do not wander miles away in a short time span -- my cats are usually within a block of my house -- having exact location information to track on a website does not seem as critical in my view.
The other perceived disadvantage of a short range radio cat locator collar is that it will not work over long distances as compared to the GPS collar. That is only partially true. While a GPS collar that is using the cellular network may be able to transmit location information over a longer distance, cellular network systems are also susceptible to interference and signal loss. If your cat should wander into a hole or a cave or some area that is not being serviced by a cellular tower, then the GPS collar would not work.
A short range radio collar would be able to work in much more remote areas and in places where the cellular phone networks cannot reach since the radio collar only needs to transmit as far as the receiver while the GPS cat collar needs to transmit to the nearest cellular tower.
So consider a radio cat collar as a cat tracking device if you cannot find a cat GPS collar that fits your needs and budget.
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