Software Simulation Method for Digital if GNSS Signal

2013 ◽  
Vol 756-759 ◽  
pp. 2655-2659
Author(s):  
Xiang Yu Wu ◽  
Jin Rui Liu ◽  
Hang Gong ◽  
Gang Ou
Keyword(s):  
Signal Processing ◽  
High Sensitivity ◽  
Simulation Method ◽  
Simulation Software ◽  
Signal Processing Algorithm ◽  
Software Simulation ◽  
Baseband Signal ◽  
Baseband Signal Processing ◽  
Gnss Receivers ◽  
Signal Simulation

Data simulation is an important auxiliary method for baseband signal processing algorithm design of digital IF GNSS receiver. Especially when the high sensitivity and high dynamic receivers are developed, or multipath and cross correlation mitigation techniques are considered, exact and complete tests under all kinds of necessary scenes can be carried out with the IF signal data which is generated by software simulation method. With this method, the developing efficiency can be improved and the cost can be cut down. In this paper, precise model of the IF signal is given firstly through analyzing GNSS receivers RF processing flow. Then, considering the discrete characteristic of software processing, the IF signal simulation flow and block of the simulation software are designed. Finally, the specific design process is given through a design example. When the IF signal simulation software is used for testing baseband signal processing algorithms, GNSS receivers IF signal data under every necessary test scene can be generated just by parameter adjustment.

Baseband signal processing

IEEE Network ◽  
1991 ◽  
Vol 5 (6) ◽  
pp. 39-43 ◽  
Author(s):  
K.M. Duch
Keyword(s):  
Signal Processing ◽  
Baseband Signal ◽  
Baseband Signal Processing

scholarly journals An FPGA Scalable Software-Defined Radio Platform for UAS Communications Research

2021 ◽  
pp. 42-51
Author(s):  
Angelo Manco ◽  
◽  
Vittorio U. Castrillo
Keyword(s):  
Signal Processing ◽  
Software Defined Radio ◽  
Data Link ◽  
Baseband Signal ◽  
Field Programmable ◽  
Base Reference ◽  
Baseband Signal Processing ◽  
Reference Design ◽  
Processing Architecture ◽  
Scalable Software

In the framework of modern Unmanned Aerial System (UAS) ground-board communications, a data-link system should provide with the following features [1]: multiband and adaptive modulations for responding to channel conditions changes and multi-standard interoperability, interferences resilience with a secure physical layer, incorporation of an air-to-air link complementary to the classical air-to-ground links. Varying the available communication functions to provide the above features without the need to substitute on-board components is a desired target. For this purpose, a Field Programmable Gate Aray (FPGA) scalable Software Defined Radio hardware Platform (SDRP) and its control and baseband signal processing architecture have been developed. The platform is composed by means of three boards which provide respectively the power supply, an FPGA based processing core and the radio frequency front-end. The control and baseband signal processing architecture, implemented on the FPGA, is designed with an application-independent section, working as a base reference design, and a reconfigurable section that implements communication functions and algorithms. The overall platform, at the board and FPGA architecture level, has been designed considering scalability and modularity as key features. Thanks to this platform a data-link which responds to the above target can be easily implemented. As a case study a reconfigurable data-link between a UAS and a Ground Control Station (GCS), designed to establish reliable communication in all the phases of a flight (parking, taxiing, taking off, cruising and landing), is presented.

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