Title :
High-order DDFS applied in simulated high-dynamic GNSS signal synthesis
Author :
Zhang, Bo ; Liu, Guangbin ; Jiao, Wei ; Liu, Dong
Author_Institution :
Lab. of Guidance & Control, Xi´´an Res. Inst. of Hi-tech Hong Qing, Xi´´an, China
Abstract :
GNSS signal simulators are developed to obtain specific GNSS signal for research on satellites navigation. High-order DDFS synthesizer is need to meet the demand of reconstructing the signal with high-order characteristic states when the GNSS signal is received by a receiver installed on a vehicle with high-dynamic motion. The signal state vector with proper orders to represent the high-dynamic motion of the receiver´s PCA is determined, and a guide line to choose proper DDFS parameters is provided. The implemented GNSS signal synthesizers are verified by a simulation instance. The results indicate that the state errors of synthesized signal are blow the tolerance limits of the design.
Keywords :
direct digital synthesis; receiving antennas; satellite navigation; signal reconstruction; vectors; Global Navigation Satellite system; PCA; direct digital frequency synthesis; high-dynamic GNSS signal synthesis; high-dynamic motion; high-order DDFS; receiver phase center-of-antenna; satellites navigation; signal reconstruction; signal state vector; Frequency synthesizers; Global Positioning System; Instruments; Laboratories; Principal component analysis; Satellite broadcasting; Satellite navigation systems; Signal mapping; Signal synthesis; Vehicles; direct digital frequency synthesis; global navigation satellites system; high-dynamic; signal reconstruction;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274150
