By Edwardo Mascasas
Lowrance GPS units are one of the top models available to consumers. Lowrance GPS products are GPS receivers. These products gather data from a satellite and display your location on a screen.
GPS is sweeping the market, which is why its good to go with a brand that has established itself as a leader in GPS technology since people are after the good quality of products.
There are Lowrance units that are specific to aviation needs, marine navigation needs, automotive applications, and those that were designed for on-land adventures.
Lowrance Global Positioning system uses satellite ranging to triangulate your position. In other words, the GPS unit simply measures the travel time of the signals transmitted from the satellites, then multiplies them by the speed of light to determine exactly how far the unit is from every satellite its sampling. GPS works 24 hours a day, anywhere in the world and is not affected by clouds, storms or weather.
By locking onto the signals from a minimum of three different satellites, a GPS receiver can calculate a 2D (two-dimensional) positional fix, consisting of your latitude and longitude. By locking onto a fourth satellite, the GPS can compute a 3D (three-dimensional) fix, calculating your altitude as well as your latitude/longitude position.
In order to do this Lowrance uses a 12 parallel-channel receiver in all of its current products. Three of the channels lock on to satellites for triangulation. Another channel locks on to a fourth satellite for 3D navigation, which lets the unit calculate altitude in addition to latitude and longitude.
These four channels continuously and simultaneously track the four satellites in the best geometrical positions relative to you. The additional eight channels track all other visible satellites, then add this data to the data from the original four satellites. The unit then over-resolves a solution, creating an accuracy-enhanced reading. The additional channels also ensure reliable, continuous and uninterrupted navigation, even in adverse conditions such as valleys or dense woods.
Furthermore, the life of the battery in your handheld GPS unit depends on a number of factors. First and foremost is the quality of the batteries you are using. Be sure to select a high quality alkaline battery. Using the Power Save feature whenever possible and keeping the backlight panel off when not needed will assure maximum battery life. Depending on the unit you have, your average battery life will be between 8 and 20 hours.
One sample product of a Lowrance receiver is the Lowrance Differential Beacon Receiver. It is completely sealed and waterproof to withstand even the harshest of environmental conditions, and is backed by our Full One-Year Warranty. The result is unmatched accuracy for your Lowrance differential-ready GPS receiver.
Signals from land-based DGPS stations are used to correct for the effects of SA and other accuracy-degrading limitations. These DGPS stations, operated by the U.S. Coast Guard or similar agencies around the world, offer free DGPS corrections broadcast on 283.5-325 kHz. The Lowrance DGPS Beacon Receiver outputs RTCM SC-104 format corrections to any DGPS-ready GPS receiver.
Lowrance produces many software and manuals to enhance the GPS experience. It is important that users new to GPS read the manual for whatever unit they choose to buy, regardless of brand. As consumers, there are lots of functions you want to figure out.
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In-vehicle GPS can be integrated into the car entertainment system or can be installed as a removable device. These systems can tell the driver where he/she is and how to arrive at the desired destination. The information includes relevant points along the way such as gas stations, points of interest, etc. Auto GPS uses voice orders so that the driver can concentrate on the road.
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Determine How You Plan to Use Your GPS Tracker: Perhaps the biggest factor influencing which GPS tracking device you will purchase is how you plan to use your GPS tracking unit. Those who want to purchase a GPS tracking unit for personal use will likely want a relatively small GPS device for conveniently attaching to a key ring or tossing in a handbag. However for those looking for GPS tracking units for business or covert GPS tracking use, other factors such as water-resistant cases and frequency of reporting are important to consider.
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Global Positioning Systems offer everything from hole overviews to Internet access "Shortgrass Technologies' Internet-based sports information system and financial ticker enables golfers to check college football scores on a Saturday afternoon or the price of stocks any weekday. Global positioning systems can track golf cars no matter where they are on the course, thus discovering bottlenecks and slower play. Golfers can order beverages and food en route to the turn, so golf clubs can offer more than a quick hot dog - a higher priced chicken sandwich, for instance...."
I always thought that GPS would go mainstream in automobiles first, and in a way I suppose it has, but maybe golfers will lead the real charge. I could have used a portable, library-centered GPS system myself to navigate the Chicago Public Library's Harold Washington Library when I was there last fall!
Lots of interesting articles from today's PC World. First up, Microsoft Takes on MapQuest: "MSN launches MapPoint online mapping service, offering maps, directions, and more."
Apparently this is going to be yet another component of MS' push for .Net services with hooks into other MSN services. MapPoint is XML-based, which makes it interesting in other ways, and there it launches with a phone-based direction service. The articles notes that this is another step towards location-based services. "For example, you might someday be able to click on a Windows Messenger buddy's name and retrieve a map showing the location of his or her home."
Good or bad? You make the call. I like parts of this, but I'm incredibly wary of .Net.
Qualcomm's Vision of the Wireless Future "When he finished, there were 20 brand-new, CDMA-based mobile handsets and devices arrayed on the table, the high-tech souvenirs of Belk's most recent trip to Hong Kong and Japan.... 'These are not PowerPoint slides,' Belk said. 'These are real devices that are already shipping in volume in Asia.' " at Business 2.0]
And there's the rub. When I do my presentations, that's all I have - pictures of prototypes or of devices not available in the U.S. Europe and Asia really are 18 months ahead of us in this area.
"Beale also discussed Qualcomm's gpsOne location technology.... It also opens the door for many new location-based services, such as traffic information and local weather forecasts. On Japan KDDI's network, there are already more than 20 location-based services available -- all of which are relatively inexpensive, costing less than $5 per month."
I'm looking forward to being able to travel and have information come to me automatically based on my location. For example, if I'm at a conference and I'm looking for a restaurant, I'd like my phone/PDA/whatever to know where I am and offer a list of nearby choices. Maybe it should tell me what movies or plays are on tonight and if there are still tickets available. You get the idea....
"Predictably, both Belk and Beale anticipate strong growth for the wireless industry as ever-more-compelling products and services become available and the industry settles on a single communication standard. How long will that take? Belk, whose career began in the personal computing business in 1983, likened the wireless industry today to the PC business of the 1980s. 'I wouldn't worry about the wireless industry yet, it's still relatively young,' he said. 'Just look how long it took the PC industry just to get to the point of standardized parallel cables.' "
Not to beat a dead horse, but the ebook industry is even younger than PCs, and PDAs have really only come into their own during the last few years. So don't count any of these technologies out just yet.
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