On Efficient Wideband GNSS Signal Design
نویسندگان
چکیده
This paper proposes a new modulation for a Global Navigation Satellite System (GNSS) to efficiently utilize a given bandwidth. This modulation, referred to as Time-Multiplexed Multi-Carrier (TMMC), divides the available bandwidth into N sub-bands such that each sub-band resembles a Quadrature Phase Shift Keying (QPSK) modulation and at the same time allows the receiver to exploit the benefits of a wideband signal. The generation of the new signal and its properties are described and the performance of TMMC is compared to the other existing modulation schemes. The benefits of using TMMC modulation for wideband signals in terms of overcoming the errors due to propagation channel impairments, continuous wave (CW) interference mitigation and receiver design complexity is discussed.
منابع مشابه
A Positioning System Based on Sensor Data Fusion
The geolocation systems are constantly evolving to enhance the integrity, accuracy and availability. Today, the applications are currently emerging and multiplying which is part of an overall context of mobility. In outdoor environments, GNSS (GPS, Galileo,...) is used and provide a good accuracy, but in the indoor environments, GNSS signal is deteriorated due to the signal degradation by diffe...
متن کاملWindowing Effects of Short Time Fourier Transform on Wideband Array Signal Processing Using Maximum Likelihood Estimation
During the last two decades, Maximum Likelihood estimation (ML) has been used to determine Direction Of Arrival (DOA) and signals propagated by the sources, using narrowband array signals. The algorithm fails in the case of wideband signals. As an attempt by the present study to overcome the problem, the array outputs are transformed into narrowband frequency bins, using short time Fourier tran...
متن کاملAn Assisted-GNSS Solution for Demanding Road Applications using the EGNOS Data Access System (EDAS)
Cyril Botteron is leading, managing, and coaching the research and project activities of the GNSS and UWB research subgroups at EPFL, the Ecole Polytechnique Fédérale of Lausanne in Switzerland. He received the Ph.D. degree from the University of Calgary in Canada in 2003 and has authored or co-authored over 40 international papers and 3 patents in the field of positioning systems, ultra low po...
متن کاملWindowing Effects of Short Time Fourier Transform on Wideband Array Signal Processing Using Maximum Likelihood Estimation
During the last two decades, Maximum Likelihood estimation (ML) has been used to determine Direction Of Arrival (DOA) and signals propagated by the sources, using narrowband array signals. The algorithm fails in the case of wideband signals. As an attempt by the present study to overcome the problem, the array outputs are transformed into narrowband frequency bins, using short time Fourier tran...
متن کاملEvaluation of Geometric and Atmospheric Doppler for GNSS-RO Payloads
To reduce the sampling rate in global navigation satellite system (GNSS)-radio occultation receivers, it is essential to establish a suitable estimation of Doppler frequency from the received signal in the satellite onboard receiver. This receiver is usually located on low earth orbit satellite and receives GNSS satellites signal in the occultation situation. The occurred Doppler on the signal ...
متن کامل