High-Precision Position Detection and Communication Fusion Technology Using Beacon Spread-Spectrum Modulation with Four-Quadrant Detector
Source abstract
Abstract
In space laser communication, the wide divergence angle of beacon light leads to substantial spatial losses, compounded by background light and detector noise; this results in compromised precision in the detection of the beacon light position. To solve this problem, a high-precision detection technique and communication composite technology employing a four-quadrant detector (QD) with beacon spread-spectrum modulation are proposed. Pseudo-random sequences (PRNs) are employed to spread the beacon communication spectrum, with the spread-spectrum signal utilized to modulate the intensity of the transmitted beacon light at the transmitter end. At the receiver, QD photocurrent signals are cross-correlated with an identical PRN that is used for modulation. The strong auto-correlation properties of PRNs, which are uncorrelated with noise, enhance the output signal-to-noise ratio (SNR), enabling precise position detection and beacon communication under high-SNR conditions. Theoretical analysis is used to explore the effects of spreading gain on the sensitivity of system detection and the precision of position detection. The experimental results demonstrate that the beacon spread-spectrum modulation scheme effectively detects the position of the light spot. At a received optical power of −37 dBm and spreading sequence PRN depths of 1023, 127, and 31, the root-mean-square error (RMSE) values are 0.983 μm, 2.876 μm, and 7.275 μm, respectively. This corresponds to improvements of 14.96 dB, 10.29, dB, and 6.26 dB compared to direct detection precision (30.811 μm). Additionally, under an identical signal bandwidth, the sensitivity improves by 14.6 dB, 10.1 dB, and 6.4 dB, respectively. The proposed beacon spread-spectrum scheme mitigates the limitations of hardware reception sensitivity and position-detection precision, demonstrating its potential application in high-precision detection in long-distance interstellar laser communication.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Astronomical Observations and Instrumentation · Optical Wireless Communication Technologies · Stellar, planetary, and galactic studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
Institute of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
Funding
National Key R&D Program of China
References (38)
Show source-provided references
1. Cube laser communication terminal (CubeLCT) state of the art10.1016/j.actaastro.2023.06.026 ↗
2. Latest developments and trends of space laser communication10.3788/co.20181106.0901 ↗
3. Recent trends in space laser communications for small satellites and constellations10.1109/JLT.2020.3009505 ↗
4. A survey on laser space network: Terminals, links, and architectures10.1109/ACCESS.2022.3162917 ↗
5. Advanced space laser communication technology on cubesats
6. Jiang, H.L., and Tong, S.F. (2011). Space Laser Communication Technology and System, National Defence Industry Press.
7. Zhang, W., Guo, W., Zhang, C., and Zhang, S. (2019). An Improved Method for Spot Position Detection of a Laser Tracking and Positioning System Based on a Four-Quadrant Detector. Sensors, 19.10.3390/s19214722 ↗
8. Bao, R., Yu, D., Chen, F., Lv, Z., Xue, J., Pan, Q., and Zhang, R. (2024). Research on High-Precision Position Detection Based on a Driven Laser Spot in an Extreme Ultraviolet Light Source. Photonics, 11.10.3390/photonics11010075 ↗
9. Jiabin, W., Bo, Z., and Zhiyong, W. (2015, January 16–18). Improved measurement accuracy of the spot position on an InGaAs quadrant detector by introducing Boltzmann function. Proceedings of the 2015 International Conference on Optoelectronics and Microelectronics (ICOM), Changchun, China.10.1109/ICoOM.2015.7398800 ↗
10. Wang, X., Su, X., Liu, G., Han, J., Wang, K., and Zhu, W. (2020). A Method for Improving the Detection Accuracy of the Spot Position of the Four-Quadrant Detector in a Free Space Optical Communication System. Sensors, 20.10.3390/s20247164 ↗
11. Neural Network Ensemble for Precise Laser Spot Position Determination on a Quadrant Detector10.1109/LPT.2023.3337722 ↗
12. Method to improve the detection accuracy of quadrant detector based on neural network10.1109/LPT.2021.3116240 ↗
13. Extended the linear measurement range of four-quadrant detector by using modified polynomial fitting algorithm in micro-displacement measuring system10.1016/j.optlastec.2018.11.036 ↗
14. Huo, L., Wu, Z., Wu, J., Gao, S., Chen, Y., Song, Y., and Wang, S. (2022). High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments. Sensors, 22.10.3390/s22083092 ↗
15. Study on main factors affecting position detection accuracy of four-quadrant detector10.3788/CJL201542.1217002 ↗
16. Li, Q., Xu, S., Yu, J., Yan, L., and Huang, Y. (2019). An improved method for the position detection of a quadrant detector for free space optical communication. Sensors, 19.10.3390/s19010175 ↗
17. Yu, J., Li, Q., Li, H., Wang, Q., Zhou, G., He, D., Xu, S., Xia, Y., and Huang, Y. (2019). High-precision light spot position detection in low SNR condition based on quadrant detector. Appl. Sci., 9.10.3390/app9071299 ↗
18. Photonic millimeter-wave joint radar communication system using spectrum-spreading phase-coding10.1109/TMTT.2021.3138069 ↗
19. Performance evaluation of spread spectrum system using different modulation schemes10.1016/j.procs.2016.05.207 ↗
20. Terahertz band: The last piece of RF spectrum puzzle for communication systems10.1109/OJCOMS.2019.2953633 ↗
21. Experimental demonstration of an underwater wireless optical communication employing spread spectrum technology10.1364/OE.390311 ↗
22. Lu, T., Hu, Q., Xu, D., Feng, X., and Zhang, Y. (2022, January 23–25). Design and Verification of Underwater Electric Field Communication System Based Spread Spectrum Techniques. Proceedings of the International Conference on Autonomous Unmanned Systems, Xi’an, China.10.1007/978-981-99-0479-2_130 ↗
23. Over 10 attenuation length gigabits per second underwater wireless optical communication using a silicon photomultiplier (SiPM) based receiver10.1364/OE.397942 ↗
24. Spilker, J.J., Axelrad, P., Parkinson, B.W., and Enge, P. (1996). . Global Positioning System: Theory and Applications, American Institute of Aeronautics and Astronautics.10.2514/4.866388 ↗
25. Gavriloaia, G., Halunga, S., and Narita, R.M. (2007, January 26–28). Coarse/Acquisition GPS Codes Correlation Properties and Vulnerability to Noise. Proceedings of the 2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, Nis, Serbia and Montenegro, Nis, Serbia.10.1109/TELSKS.2007.4376070 ↗
26. Ndili, A. (1994, January 20–23). GPS pseudolite signal design. Proceedings of the Institute of Navigation GPS-94, Salt Lake City, UT, USA.
27. On the generation and correlation measurements of Gold codes10.1080/00207218808962821 ↗
28. Crosscorrelation properties of pseudorandom and related sequences10.1109/PROC.1980.11697 ↗
29. Simulation of Gold Code Sequences for Spread Spectrum Application
30. Study of laser location based on four-quadrant detector APD
31. A novel machine learning algorithm for large measurement range of quadrant photodetector10.1016/j.ijleo.2020.165971 ↗
32. Reynders, B., and Pollin, S. (2016, January 22). Chirp spread spectrum as a modulation technique for long range communication. Proceedings of the 2016 Symposium on Communications and Vehicular Technologies (SCVT), Mons, Belgium.10.1109/SCVT.2016.7797659 ↗
33. Fakatselis, J. Processing gain in spread spectrum signals. Harris Semiconductor application note.
34. Milstein, L.B., and Simon, M.K. (1999). The Mobile Communications Handbook, CRC Press.
35. Roadmap to free space optics10.1364/JOSAB.399168 ↗
36. Bit error rate performance analysis for free space optic communication10.1088/1757-899X/850/1/012056 ↗
37. Design of digital tracking and communication composite receiver for four quadrant detector
38. Design and evaluation of a high-sensitivity digital receiver with the finite impulse response filter algorithm for free-space laser communication10.1117/1.OE.59.3.036105 ↗