基于散射自由程随机重采样的光量子定位方法

doi:10.11959/j.issn.1000-436x.2023053

Abstract

Abstract:

To solve the problem that the quantum signal was disturbed by the scattering environment, which lead to large fluctuation of the positioning error and poor positioning robustness, an optical quantum positioning method based on random resampling of the scattering free path was proposed.The scattering model was established based on the Monte Carlo theory, and the scattering free path matrix was constructed by combining the environment information and coincidence counting results.The scattering free program was resampled, and the relative distance error of different light sources in different time groups was calculated.Based on that, the light sources were dynamically selected, and the position of the target object was estimated.Experimental results show that the positioning error of the proposed method can achieve the centimeter level, and the confidence probability of the positioning error within 0.12 m is 90.57%.

Key words: quantum positioning, scattering free path, coincidence counting, random resampling, light source selection

CLC Number:

TN929.1

Mu ZHOU, Jing ZHANG, Yong WANG, Xiaolong YANG, Lingxia LI. Optical quantum positioning method based on random resampling of scattering free path[J]. Journal on Communications, 2023, 44(3): 55-65.

Figures/Tables 12

References 25

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参数	取值
消光系数/km^-1	2.058
激光器功率/mW	40
非线性晶体尺寸	1mm×2 mm×20 mm
温度控制器精度	0.01 °C
同步与符合模块时间测量范围/ms	≥1
单光子探测器死时间/ns	≤ 20
单光子探测器暗计数频率/Hz	＜ 500
单光子探测器饱和计数频率/MHz	35
单光子探测器探测效率	＞ 60%
单光子时间分辨率/ps	350

光源序号	符合计数峰值
光源序号	K=1×10⁴	K=1×10⁵	K=5×10⁵	K=1×10⁶	K=2×10⁶
1	4	15	54	105	194
2	6	30	130	277	519
3	8	50	191	372	725
4	15	76	383	746	1 563
5	14	93	494	949	1 856

Optical quantum positioning method based on random resampling of scattering free path

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