Satellite Multipath Signal Extraction Algorithm Based on Blind Source Separation

Changpeng Ji; Qian Wen; Jiancong Huang

doi:10.3788/LOP57.190701

Laser & Optoelectronics Progress, Volume. 57, Issue 19, 190701(2020)

Satellite Multipath Signal Extraction Algorithm Based on Blind Source Separation

Changpeng Ji¹, Qian Wen^1、*, and Jiancong Huang²

Author Affiliations

¹School of Electronic and Information Engineering, Liaoning Technical University, Huludao, Liaoning 125105, China

²Liaoning Hanshi Machinery Manufacturing Co., Ltd., Fuxin, Liaoning 123000, China

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Figures & Tables(9)

Fig. 1. Multipath interference mixed signal of satellite

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Fig. 2. Time-domain diagrams of different source signals. (a)--(e) s₁--s₅

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Fig. 3. Frequency-domain diagrams of different source signals. (a)--(e) s₁--s₅

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Fig. 4. Mixed signals interfered by multipath from different receivers. (a)--(e) M₁--M₅

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Fig. 5. Signal time-domain diagram separated by RH-JADE algorithm. (a)--(e) Y₁--Y₅

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Fig. 6. Signal frequency-domain diagram separated by RH-JADE algorithm. (a)--(e) Y₁--Y₅

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Fig. 7. Signal time-domain diagram separated by FastICA algorithm. (a)--(e) Y₁--Y₅

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Table 1. Simulation parameters

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Table 1. Simulation parameters

Signal	s₁	s₂	s₃	s₄	s₅
Type	LOS/BPSK1	multipathsignal /BPSK2	singletone/J₁(t)	chirp/J₂(t)	noise/J₃(t)
Centerfrequency /MHz	12	12	12	10	-
Phase /rad	0	π/2	-	-	-
Samplingfrequency /MHz	200	200	200	200	-
Code rate /(10⁶ bit·s^-1)	12	12	-	-	-

Table 2. Running time of three algorithmsunit:s
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Table 2. Running time of three algorithmsunit:s
Algorithm FastICA CG-JADE RH-JADE
Average time 0.0523 0.0087 0.0063

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Changpeng Ji, Qian Wen, Jiancong Huang. Satellite Multipath Signal Extraction Algorithm Based on Blind Source Separation[J]. Laser & Optoelectronics Progress, 2020, 57(19): 190701

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