|How to Navigate with a Cellphone / Handy. (Viewed 7287 times)|
What the hell is GPS?
The Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). Utilizing a constellation of at least 24 Medium Earth Orbit satellites that transmit precise microwave signals, the system enables a GPS receiver to determine its location, speed, direction, and time. Other similar systems are the Russian GLONASS (incomplete as of 2008), the upcoming European Galileo positioning system, the proposed COMPASS navigation system of China, and IRNSS of India.
Developed by the United States Department of Defense, GPS is officially named NAVSTAR GPS (Contrary to popular belief, NAVSTAR is not an acronym, but simply a name given by John Walsh, a key decision maker when it came to the budget for the GPS program). The satellite constellation is managed by the United States Air Force 50th Space Wing. The cost of maintaining the system is approximately USD 750 million per year, including the replacement of aging satellites, and research and development.
Following the shootdown of Korean Air Lines Flight 007 in 1983, President Ronald Reagan issued a directive making the system available for free for civilian use as a common good. Since then, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, and scientific uses. GPS also provides a precise time reference used in many applications including scientific study of earthquakes, and synchronization of telecommunications networks.
Some usefull Things to know
There are 2 important GPS-Formats to know. The first is the wellknown GoogleMaps '.kml' (Keyhole Markup Language) for feading the GPS data to the API of GoogleMaps. The next one is the '.gpx' (GPS eXchange format) format. You can serve most of the GPS devices and Applications with this dataformat. There are also several Appliations who will convert your data in both directions.
Another formats are: .kmz (Google Earth KML), .csv (Comma-separated text), .trk (Tracklog: PCX, CompeGPS, GPS Tuner, Mapsend, or Magellan NMEA).
Why i decided to use a Cellphone for GPS Tracking?|
At first i needed a new Phone. I got tired from my old Siemens with no Gimmicks and loveless design.
The major thing who i hold responsible for choosing the Cellphone Navigation is the advance that almost everyone has a cellphone. Its easy to take the Phone with you on the ride. The next thing is that this Solution is much cheaper than buying f.i. a Garmin GPSMAP60 for about 600 €.
I had to choose between the Nokia 6110 Navigator with onBoard GPS and the Sony-Ericsson w880i and an external GPS Mouse. In the Point of the Lifetime of the Battery from the Cellphone its definitly better to outsource the GPS Chip to a external Mouse. Another Advantage of the BT-201 is the Datalogger Mode. This Mode allows you to log a Track without using the Cellphone.
Short Review Sony-Ericsson W880i|
Right now the flatest Cellphone on the Market. Great design in flame black. A 2 Megapixel Cam without autofocus. Excellent Walkman functions which are on the same level as Apples Ipod. Bluetooth, 71 Gramms and a 320 x 240 pixel Display makes the W880i a greatful Companion. You can power your phone with a 8 GB (!) MemoryStickPro (Only 2 GB are confirmed from Sony-Ericsson).
Short Review Wintec WBT-201|
The GPS Mouse uses the brand new Atmel / ublox ATR 0625 for parallel usage of 16 Satellites. The internal Memory can save up to 131.072 Waypoints. After switching the WBT-201 active by the Power Button, a short selftest will be made. The Search of the Satellites depends on the Weather and the last time the GPS Mouse was in use. If finished, the Data will be logged immediatly when you are moving. You can mark a special Point on the Way by pushing the Start Button. For ending the old Track and starting a new one you have to click the Start Button for about 2 Seconds. The Weight is 40 Gramm and the WBT-201 is as small as an lighterpack. Waterresistant. The battery holds up to 15 hours. The Mini-USB drives me crazy, because to remove the cover it is very tricky and takes long fingernails.
Short Review ApeMap|
ApeMap is a great Software, developed by an Austrian Company and runs on the most Cellphones with the above Certifications. With the delivered Desktop Software you can transfer Kompass Maps and GPX Tracks to the Phone and export saved Tracks from the Phone.
What do you need:
A Sony Ericsson W880i, Nokia N95 or a similar Cellphone with the following Certifications:
* JSR-75 (Fileaccess)
* JSR-82 (Bluetooth)
* JSR-205/120 (Sending SMS via Java)
* Thawte Root Certificate
A Bluetooth GPS Mouse like Wintec BT-201. This one can act autonomous. The Mouse can log the GPS Track without the Phone. So you only need to grab out the Phone for orientation in the country.
A Java based Software like Ape@Map for Transfering, Tracking and Viewing the Maps on the Phone. At the Moment you could use the digital Maps from KOMPASS .
You have to pay about 200 € for the Phone and 100 € for the GPS Datalogger Mouse. The digital maps are about 15 to 90 €.
Map Mobile Navigator