A Multirate Recovery Scheme for Wide-band GNSS Signals
نویسندگان
چکیده
In this paper, a multirate approach is proposed for the recovery of wide-band (Global Navigation Satellite System) GNSS signals. Two or more narrow-band front-ends are used in parallel for collecting different portions of the spectrum of a wide-band GNSS signal that is then reconstructed from its subband components. Algorithms for compensating for phase offsets and amplitude imbalances have been developed and used to equalize possible differences among the recovered narrow-band components. Specific focus is given to the case where two front-ends are employed and live GNSS data from the Galileo In-Orbit Validation Elements, GIOVE-A and GIOVE-B, are used for demonstrating the effectiveness of the developed reconstruction algorithm. Index Terms Global Navigation Satellite Systems, GNSS, Front-end, Multirate Signal Processing, Power Symmetric Filter, Prony’s method, Wide-band Signals
منابع مشابه
A Novel Sampling Approach in GNSS-RO Receivers with Open Loop Tracking Method
Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis. To do this, various frequency estimation methods such as MUSIC and ESPRIT can be adopt...
متن کاملA Wide Band Antenna for Multi-constellation Gnss and Augmentation Systems
Local Area Augmentation System (LAAS) based on multiconstellation GNSS can provide improved accuracy, availability and integrity needed to support all weather category II and III precision approach landing of aircraft. In order to receive satellite signals of GNSS, an antenna working over wide frequency band and high phase center stability is preferred. Commonly used antennas like crossed dipol...
متن کاملCPM Signals for Satellite Navigation in the S and C Bands
Frequency allocations in the L band suitable for global navigation satellite system (GNSS) services are getting crowded and system providers face an ever tougher job when they try to bring in new signals and services while maintaining radio frequency compatibility. With the successive opening of the S and C bands to GNSS service, the multi-band combined navigation is predicted to become a key t...
متن کاملA Software-Defined GNSS Reflectometry Recording Receiver with Wide-Bandwidth, Multi-Band Capability and Digital Beam-Forming
In this paper, we present the Software PARIS Interferometric Receiver (SPIR), a high-speed GNSS reflectometry recording receiver which has been designed and implemented with the primary goal of demonstrating the synoptic capabilities of the interferometric technique in GNSS Reflectrometry. Thanks to the use of large bandwidth GNSS signals, this technique is advantageous in comparison to the so-...
متن کاملSoil Moisture Monitoring Using GNSS-R Signals; First Experimental Results with the SAM Sensor
Observing the Earth surface with Global Navigation Satellite Systems (GNSS) reflected signals has become a noteworthy remote sensing technique for the scientific community. The growing interest in GNSS as a remote sensing tool is due to its global availability and the carrier frequencies used. In fact, L-band, in which all current and next-future Global Navigation Satellite Systems emit, is a p...
متن کامل