RLS Adaptive Real-Time Noise Reduction Technology for Fiber Optic Gyroscope Based on FPGA

Jiajun Ma; Qingyang Liu; Yanran Lü; Wei Zeng; Yongchao Liang; Junbiao Jiang

doi:10.3788/CJL202249.2106004

Chinese Journal of Lasers, Volume. 49, Issue 21, 2106004(2022)

RLS Adaptive Real-Time Noise Reduction Technology for Fiber Optic Gyroscope Based on FPGA

Jiajun Ma^1、*, Qingyang Liu¹, Yanran Lü¹, Wei Zeng¹, Yongchao Liang¹, and Junbiao Jiang²

Author Affiliations

¹College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, Guizhou, China

²Xi’an Modern Control Technology Research Institute, Xi’an 710065, Shaanxi, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(9)

Fig. 1. Structure diagram of RLS adaptive filter

Download full size

Fig. 2. Operation structure of RLS adaptive filter

Download full size

Fig. 3. State transition diagram of RLS adaptive filter

Download full size

Fig. 4. Experimental block diagram of fiber optic gyroscope adaptive filtering

Download full size

Fig. 5. Comparison of filtering effects of different filters under static conditions

Download full size

Fig. 6. Comparison of performances of different filters under static conditions. (a) Comparison of spectrum; (b) comparison of Allan variance

Download full size

Fig. 7. Comparison of different filter outputs under swinging motion. (a) 10 Hz; (b) 5 Hz

Download full size

Table 1. Performance comparison among different operation structures
View table
Table 1. Performance comparison among different operation structures
Operation structure Performance indicators
Clock periods Multipliers Divider Adders
Parallel operations 1 1＋2p＋3p² 1 2－p＋2p²
Serial operations 9＋3p＋15p² 1 1 1
Alternate storage pipeline 4＋6p＋5p² 1 1 1

Table 2. Performance comparison between LMS adaptive filter and RLS adaptive filter

View table

Table 2. Performance comparison between LMS adaptive filter and RLS adaptive filter

Temperature /℃	LMS adaptive filter			RLS adaptive filter
Temperature /℃	Bias stability /[(°)·h^－1]	Angular random walk /[(°)·h^－1/2]	Scale factor nonlinearity /10^－6	Bias stability /[(°)·h^－1]	Angular random walk /[(°)·h^－1/2]	Scale factor nonlinearity /10^－6
－40	0.0614	0.0065	45	0.0324	0.0031	33
25	0.0603	0.0060	34	0.0298	0.0029	24
60	0.0616	0.0064	43	0.0315	0.0030	28

Tools

Get Citation

Copy Citation Text

Jiajun Ma, Qingyang Liu, Yanran Lü, Wei Zeng, Yongchao Liang, Junbiao Jiang. RLS Adaptive Real-Time Noise Reduction Technology for Fiber Optic Gyroscope Based on FPGA[J]. Chinese Journal of Lasers, 2022, 49(21): 2106004

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites