Principle of Global Positioning System and Effects of RF Interference on GPS Satellite Signal Receiver TrackingonofRFG.doc

Principle of Global Positioning System and Effects of RF Interference on GPS Satellite Signal Receiver Tracking
Young-jin Sang and O-hyuk Kwon
DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING, YONSEI UNIVERSITY
E-MAIL: yjmych@, ******@
ABSTRACT — WE PRESENT RADIO NAVIGATION AND THE PRINCIPLE OF GLOBAL POSITIONING SYSTEM (GPS). BECAUSE GPS RECEIVERS RELY ON EXTERNAL RADIOFREQUENCY (RF) SIGNALS, THEY ARE VULNERABLE TO RF INTERFERENCE. RF INTERFERENCE CAN RESULT IN DEGRADED NAVIGATION ACCURACY PLETE LOSS OF RECEIVER TRACKING.
I. INTRODUCTION
Global Positioning System (GPS) is a satellite system used in navigation that allows you to determine your position 24 hours a day, any place on the globe and in any kind of weather. GPS is a group of 24 satellites that circle the globe and beam radio signals to the earth’s surface. It was designed as a dual-use system with the primary purpose of enhancing the effectiveness of . and allied military forces.
Now the GPS is rapidly ing an ponent of the emerging Global Information Infrastructure, with applications ranging from mapping and surveying to international air traffic management and global change research. The growing demand from military, civil, commercial, and scientific users has generated a . commercial GPS equipment and service industry that leads the world. Augmentations to enhance basic GPS services cou