Title of article :
Differential Coherent Algorithm Based on Fast Navigation-Bit Correction for Airborne GNSS-R Software Receivers
Author/Authors :
Wang, Yiran Beihang University - School of Electronic Information Engineering, China , Zhang, Bo Beihang University - School of Electronic Information Engineering, China , Shao, Dingrong Beihang University - School of Electronic Information Engineering, China
Abstract :
Signals from the Global Navigation Satellite System (GNSS) scatter over the sea surface resulting inrelatively low Signal-to-Noise Ratios (SNR). A differential coherent algorithm is given here to improve the SNR and reduce the performance degradation due to the Squaring-Loss and the navigation-bit effect. The algorithm uses fast navigation-bit correction for Delay-Doppler Maps (DDM) in airborne Global Navigation Satellite Signal Reflectometry (GNSS-R) software receivers. The system model is introduced with an analysis of the statistical properties with simulations to support the theoretical analysis. Field experiments with real airborne receivers then demonstrate the effectiveness of this algorithm. Comparisons with test results show that this algorithm offers a significant SNR gain over conventional algorithms.
Keywords :
satellite navigation , signal processing , Global Navigation Satellite Signal Reflectometry (GNSS , R) , Delay , Doppler maps , differential coherence , signal , to , noise ratio
Journal title :
Tsinghua Science and Technology
Journal title :
Tsinghua Science and Technology
