Question about Radar Detectors

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Tracking device ?

Good evening sir,
I m an eng student, i hve 2 do project on embedded system.
As tracking device is my topic on it. so could u plzzz me ?
as wt kind of tracking device shoud i make ??

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I do not know your level of experience, but here are a couple of types you could make.....
A lojack-type beacon, with a receiver that beeps louder as it nears the beacon.
A unit that calculates its position by either cell tower triangulation or by GPS satellite. The only issue with this unit is that you need a way to access the information it stores. Some units store the information so it can be accessed later, and some units send the information over the cellular network to the internet.
if you plan on installing this device in a vehicle, the best place to mount the gps antenna would be under the dashboard below the front windshield. GPS antennas can only see through plastic and glass... if there is any metal above it, you will see no satellites. The unit must be grounded to the chassis of the automobile, and it must be connected to a direct power source. To reduce strain on the car battery, this unit should have a standby mode while the car is off... this will necessitate a 3rd connection to the vehicle, which would be the ignition lead. This lead only shows power when the vehicle is started, so it is a good way to tell the unit to wake up from standby. Another way to wake the unit up from standby would be to send it a "text message" or sms, The text message would contain a command to wake up (the standby current could be exactly that of a cell phone), and the unit can send its latitude and longitude via text message. 
That's pretty much it.

Posted on Feb 24, 2008

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