If you are a technology and gadget addict, you’ve probably heard and seen and experienced the power of GPS navigation systems! Today, GPS navigation is becoming quite common and GPS devices are all the rage. These small sized systems stored a whole lot of information and can prove to be very helpful, especially if you visiting places you’ve never been to before.
More than that, GPS navigation systems make for excellent gift choices. Trust me, if your partner or friend travels the world, a GPS navigation device will be the ideal gift on their next birthday. Packed with incredible features, these devices are easy to use and fun. However, due to the numerous models and designs available, choosing a GPS system can be very confusing. So, sort through this mess with this quick guide and pick the best GPS navigation system for you.
The GPS navigation systems market is a very competitive one. You can give models with similar features from different manufacturers and at different prices. Typically, the price for these devices ranges from $150 to almost $1000, depending on the features. GPS systems come with a wide set of technology driven features that can make choosing the best one in your budget a challenge. While most manufacturers offer features like FM transmission, Bluetooth, multiple route numbers, live weather, traffic updates, losing yourself in this sea of complexity can be overwhelming, especially to a relatively less educated buyer. So let’s start by understanding these complexities one at a time.
Now, like most appliances and gadgets there are several players in this field too. However, it’s best to go with the bigger and more reputable manufacturers as you can sleep peacefully knowing that your device will be supported and serviced. The biggest players in the GPS navigation systems market are: Garmin, Tom Tom, & Magellan.
Garmin GPS navigation systems are known for their wide range, their superior quality, and excellent technology. Tom Tom is a relatively new entrant in the market and has managed to capture a sizable chunk in this space by offering competitively priced, quality products. However, it is Magellan that was the pioneer in the GPS industry!
So what about their features? Broadly speaking, all GPS devices come with a touch screen interface, voice directions, a database of ‘points of interest,’ auto-calculate the distance facility among other things. So, if this is all that you demand from the GPS device then you can pick one up for around $150 from any of the biggies.
However, if you want a more feature packed device then you’ll also have to pay more. By spending a couple of hundred dollars more you can get an integrated Bluetooth feature for hands-free voice calling, extensive maps, real-time traffic and weather conditions and a bigger points of interest database.
Finally, GPS navigation systems that calculate the distance between multiple destination points on different routes are the most expensive devices in the market. So depending on your budget and requirements, you can easily buy a GPS device for around $350-$400 and never be lost in a new city again!
By: Hayi Mansoor
Posts Tagged ‘Gps Navigation Systems’
GPS Navigation Systems – A Quick Guide
February 25th, 2010Posted in Article
Tags: All The Rage Complexities Driven Features Excellent Technology Fm Transmission Garmin Gps Gift Choices Gps Devices Gps Garmin Gps Navigation Device Gps Navigation System Gps Navigation Systems Gps System Magellan Gps Reputable Manufacturers Route Numbers Similar Features Tom Tom Traffic Updates Weather Traffic
GPS Ionospheric Delay – The Problem and Solution
February 21st, 2010
GPS ionospheric delay is one of the most common issues with the gps navigation systems. Inconsistencies of atmospheric conditions affect the speed of the GPS signals as they pass through the Earth’s atmosphere and ionosphere. Correcting these errors is a significant challenge to improving GPS position accuracy.
These effects are smallest when the satellite is directly overhead and become greater for satellites nearer the horizon since the signal is affected for a longer time. Once the receiver’s approximate location is known, a mathematical model can be used to estimate and compensate for these errors.
Because ionospheric delay affects the speed of microwave signals differently based on frequency – a characteristic known as dispersion – both frequency bands can be used to help reduce this error. Some military and expensive survey-grade civilian receivers compare the different delay in the frequencies to measure atmosphere dispersion and apply a more precise correction.
This can be done in civilian GPS receivers without decrypting the P(Y) signal carried on L2 by tracking the carrier wave instead of the modulated code. To do this on lower cost receivers, a new civilian code signal on L2 called L2C was added to the satellites. This new signal allows a direct comparison of the L1 and L2 signals using the coded signal instead of the carrier wave.
The effects of the ionosphere generally change slowly and can be averaged over time. The effects for any particular geographical area can be easily calculated by comparing the GPS-measured position to a known surveyed location. This correction is also valid for other receivers in the same general location.
Several systems send this information over radio or other links to allow L1 only receivers to make corrections. The date is transmitted via satellite system and transmits it on the GPS frequency using a special pseudo-random number so only one antenna and receiver is required.
Humidity also causes a variable delay resulting in errors similar to ionospheric delay but occurring in the troposphere. This effect is more localized and changes more quickly than ionospheric effects and is not frequency dependent. These traits make it much more difficult to make precise measurement and compensation for humidity errors than with the ionospheric effects.
Changes in altitude also change the amount of delay due to the signal passing through less of the atmosphere at higher elevations. Since the GPS receiver computes its approximate altitude, this error is relatively simple to correct.
GPS signals can also be affected by multi-path issues where the radio signals reflect off of surrounding terrain such as buildings, canyon walls, and hard ground. These delayed signals can cause inaccuracy as a well.
To correct these errors, many techniques have been developed. How these techniques work depends on addressing the long delay multi-path or shorter delay multi-path. To know more on the solution on problems with gps system, please visit GPSAutoTracker for more tips on how to maximize the use of your gps system.
By: Audrey Ly
Posted in Article
Tags: Approximate Location Atmospheric Conditions Carrier Wave Civilian Gps Receivers Code Signal Dispersion Frequency Bands General Location Geographical Area Gps Navigation Systems Gps Signals Inconsistencies Ionosphere L2c Mathematical Model New Signal Position Accuracy Pseudo Random Number Satellite System Solution Gps
Garmin GPS Systems – Your Complete Guide
February 9th, 2010
So you have decided to buy one of the many Garmin GPS systems available. You’ve spoken to everyone you know, and now you need to start getting information together – how much do you want to spend on your Garmin GPS system? Where will you be putting your new Garmin GPS system? Which one of the Garmin systems are you going to pick?
First, you need to undertake various Garmin GPS comparisons. There are many versions available, for many types of vehicles and requirements. When comparing Garmin GPS navigation systems, it’s best to go with what is best for you, not what someone else has or what might seem the best simply because it is the most expensive. For example, you may have been recommended a Garmin GPS handheld unit by a friend who does a lot of bushwalking, but as a boating person, a handheld unit would not be as useful to you. Similarly, a Garmin portable GPS system is great for someone who is in and out of a car, as they need to take it with them to prevent theft. However a fixed Garmin global positioning system would be better for someone who has no need to be removing it from its mounting all the time (or someone, like a courier, who is in and out of their vehicle more times than they care to think about!). You definitely don’t want your Garmin GPS system to be a hindrance!
Compare Garmin global positioning system prices, and see if it might be cheaper to purchase a Garmin GPS system online. Many places sell Garmin global positioning systems online, so be sure to have a look around as it may be cheaper (even taking into account postage) to buy your Garmin GPS system from an outlet that does not have the overheads a physical shop-front might have. The issue with shopping online is, of course, not being able to ‘play’ with your new Garmin global positioning system. But a trip to the local GPS shop may fix that.
One of the Garmin GPS systems available is the Garmin 2720 GPS. This particular Garmin GPS system offers many features, including the ability to program points of interest (such as speed cameras and school zones) so you need never be caught out again. The flashy Garmin 360 GPS doubles as a personal assistant, boasting facilities such as MP3 players, a translator, and Bluetooth capabilities enabling you to make hands-free calls. Another good pick is the Garmin c530 GPS – ready to go straight from the box, this unit is a good pick for those needing an ATM or petrol station quickly – just touch and go!
Garmin GPS systems offer it all; the hardest part is picking which one you like. Read some Garmin global positioning systems reviews, which are usually unbiased and give both pros and cons for each model. With a Garmin GPS navigation system, you can’t go wrong!
By: Chaz Newman
Posted in Article
Tags: Abi Bushwalking Garmin 2720 Garmin Global Positioning System Garmin Gps Garmin Gps System Garmin Gps Systems Global Positioning System Global Positioning Systems Gps Comparisons Gps Garmin Gps Handheld Gps Navigation Systems Gps Shop Gps Unit Handheld Unit Hindrance Overheads Portable Gps Types Of Vehicles
