Factors Affecting GPS Signal

Posted on April 30, 2008

Certainly, in spite of the much touted accuracy of the Global Positioning System (GPS) signal, there are factors that can degrade it and thus affect its accuracy. Some of these are due to ionosphere and troposphere delay, signal multi-path, receiver clock errors, orbital errors, number of satellite visible, satellite geometry/shading and intentional degradation of the satellite signal.

Satellite signals tend to slow down at it passes through the atmosphere or is reflected off by objects such as tall buildings or large rock surfaces before reaching the receiver. A receiver’s built-in clock is usually not as accurate as the atomic clocks on-board the GPS satellites thus the slight timing errors. The inaccuracies of the satellites reported location, less GPS receivers that can “see” as well as poor geometry of satellites can all affect the accuracy of the GPS signal.

Artificial SEO

Posted on April 27, 2008

Search Engine Optimization or SEO in its natural form tends to be more time consuming and tedious than its artificial counterpart but is prone to longevity of results than the latter. While natural SEO focuses on content, keyword enhanced copy and use of proper descriptions, artificial SEO may use software generated keyword enhanced pages, methods of re-directs and software generated doorway pages.

Artificial SEO usually speed up rankings and placement initially but tend to go down as quickly especially when the existing content does not warrant such high ranking. There is also the risk of being banned when keyword dense pages are automatically generated en masse and are viewed as spammers. A site owner that aims to promote a product or services seriously for a good number of years or a lifetime would fare better using the natural way.

Today’s Cell Phone Technology

Posted on April 22, 2008

Cellular phones are used by millions of people around the world and for good reason. They are such great gadgets that talking to anyone on just about any part of the planet is now possible. Cell phones are able to perform an array of functions with new ones being added almost simultaneously and would vary depending on the model.

Some of these functions would include storing contact information, making task or –to-do-lists, keeping track of appointments, setting reminders, simple math calculations, sending or receiving e-mails, getting information such as news, entertainment or stock quotes from the Internet, playing games, watching TV, sending text messages and integrating other devices such as PDAs, MP3 players and GPS receivers.

Data Profiling

Posted on April 13, 2008

The process of assembling information about a particular individual in order to generate a picture of his/her patterns and behavior is what is referred to as data profiling. It is used in security, law enforcement and intelligence operations for a variety of applications. Government is able to access information from third parties such as banks and credit companies by informally requesting access by compelling such access through other procedures or by purchasing data from commercial data aggregators or data brokers.

Information regarding an individual transaction is relatively easy to get hold of since no high value is generally placed on isolation. It becomes valuable when a number of such transactions are aggregated to assemble a detailed profile revealing the actions, habits and preferences of an individual.

Ballistic Fingerprinting

Posted on April 7, 2008

Ballistic fingerprints are the identifying marks made on the bullets and cartridge casings when a gun is fired. They are as unique as human fingerprints as no two firearms leave the same marks. These marks can be reproduced, meaning that an identical mark is made every time the same gun is fired. Due to the uniqueness and reproducible quality of ballistic fingerprints, solving gun crimes becomes a lot easier as rapid identification of the specific crime weapon used is possible.

The technology that matches bullets to firearms is known as ballistic fingerprinting. It works to provide police with relevant crime leads but needs a comprehensive database of ballistic fingerprints of every gun before it is sold to determine which specific gun (manufacturer, model, serial number) the bullets were fired from.

Next Page »

© Copyright Kis@Borg • Powered by Wordpress • Using Eye Candy theme by Brian Gardner.