SiRF Technology is a well known GPS location provider for almost all the navigational units across the world. It efficiency is intensified by the wireless connectivity and multimedia capabilities. SiRF’s technology has been incorporated into a number of mobile consumer devices as well as many navigational application systems. This technology has also been widely used by many commercial applications programme such as fleet management, asset tracking, location servers, etc. The other applications where this technology finds a good market include personal digital assistants, notebook computers, UMPCs, telematics systems, mobile phones, etc. to name a few.

Following the line of their original SiRF InstantFix technology, they have launched the SiRF InstantFixII technology that has been specifically designed to eliminate the delay in start-up times in case of navigational devices. This new technology is compatible with the SirfstarIII GPS receiver as well as the SiRFatlas and SiRFtitan navigational processors. With the help of the InstantFixII technology, the satellite navigator is able start working is just about 5 seconds, it has been brought down from 30 seconds to 5 seconds, eliminating the unnecessary 25 seconds. Also it does not require any additional network connectivity or downloads, thereby improving the overall efficiency of navigational system.

The SiRF InstantFixII is able to accomplish this task by making use of sophisticated algorithms that enable a navigational unit to track the visible GPS satellites during the day and predict the location and position. It remains in constant touch with the satellites and keeps receiving data on a regular basis. Based on this data, it automatically keeps updating its information constantly. Thus your satellite navigational unit is sure to have the most updated and recent data at any given point of time. This has a very positive and enriching impact on the sat nav users.

Although, it has been believed since ages that the location determination process using GPS satellites is a simple triangulation process, in reality it is a much more complex and tedious procedure. Firstly, the GPS receiver has search and locate enough satellites for position determination and then lock onto those satellites. This process is known as acquisition. The SiRFstarIII GPS receiver comes with an architecture consisting of about 200,000 correlators, that makes the acquisition process a faster and quicker one. Calculating the accurate position is one of the most toughest task. This is because it needs to know the exact location of each of the satellites in the atmosphere that it has locked on to.

Now, it has been observed that every satellite takes 30 seconds to transmit its precise location (this location data is valid for about two to three hours). The GPS receiver must now be able to download this information. For this purpose it requires a fix. However, there is bound to be some kind of interruptions at times while the signal is being received like a tree, a tall building or unclear sky, which may weaken the resultant signal. Under such a condition, the GPS receiver will need to wait for an additional 30 seconds as it may not be able to effectively comprehend the signal. Thus the whole process may take a lot of time. With the  SiRF InstantFixII technology and its ability to work efficiently with weak signals all this task is made quick and simple.

As network based updates is a very cumbersome and tedious process, this technology has been widely accepted and appreciated by the consumers. Also by using this technology, the user need not have to worry about instructing the unit to get the latest data, the portable navigational device autonomously performs the updation task. This gives you better control over the wheel and more concentration on the road.

This is a very useful tool in real-world situations. This is because consumers using satellite navigators are constantly on the move. Thus it is important that the receiver is able to lock onto the GPS satellites as quickly as possible, ideally it should be in a position to lock onto the satellites faster than the vehicle’s speed. Only then will it be able to provide the information that is required at that particular instant as information obtained at a later time is not going to be of any use to the commuter. The SiRF InstantFixII technology is not just able to provide timely and accurate location and position data, but is also able to work efficiently with weak signals, rendering it capable of being used in tough and varied terrain conditions as well.

The SiRF InstantFixII technology is capable of working with all types of SiRF multifunctional processors and SiRFstarIII based GPS receivers.

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