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. CONTENTS. RANDOM CODES OR WEIL CODES?. II. GPS L1C CODES. III. CROSSCORRELATIONS. V. GALILEO E1 OS CODES. IV. CONCLUSION. VI. I. INTRODUCTION. Pseudo Random Noise (PRN) codes are essential element in every GNSSAll existing codes are based on Linear Feedback Shift Registers (LFSR)Galileo E1 OS an
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1. GALILEO E1 OS AND GPS L1C PSEUDO RANDOM NOISE CODES- REQUIREMENTS, GENERATION,OPTIMIZATION AND COMPARISON - Stefan Wallner, Jos-ngel vila-Rodrguez, Guenter W. Hein Institute of Geodesy and Navigation University FAF Munich, Germany