基于辅助源和相关熵的ADS-B信息时延估计新算法

doi:10.11959/j.issn.1000-436x.2015102

Abstract

Abstract:

A novel time delay estimation algorithm was proposed to correct ADS-B latency employing an auxiliary signal source and correntropy.Firstly,the cause of message delay was analyzed and a new latency model was raised.Secondly,when comparing the signal similarity,the correntropy was introduced to estimate the delay using Doppler shift from signals of the auxiliary source as the research object.Thirdly,the influnce of step length and Gaussian kernel length on evaluating the time delay was researched.Finally,simulations were carried out to verify the performance of the proposed algorithm in the impulsive noise environment.The new algorithm needs no change in message format and it is more practical and accurate compared with existing methods.

Key words: time delay estimation, automatic dependent surveillance-broadcast, Doppler shift, correntropy

Sheng-yang LUAN,Tian-shuang QIU,Ai-min SONG,Jing-chun LI,Hai-feng TAN. Novel time delay estimation algorithm for ADS-B based on an auxiliary source and correntropy[J]. Journal on Communications, 2015, 36(7): 102-108.

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References 16

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实验次数	扫描步长/s	均方根误差/ms
实验次数	扫描步长/s	σ =0.1	σ=0.01
1 000	0.01	2.839	2.897
1 000	0.02	5.884	6.345
1 000	0.03	9.638	281.202
1 000	0.04	11.760	559.703
1 000	0.05	14.870	629.963
1 000	0.06	18.662	673.039
1 000	0.07	23.032	674.692
1 000	0.08	26.475	679.947
1 000	0.09	29.559	699.983
1 000	0.1	30.815	710.447

Novel time delay estimation algorithm for ADS-B based on an auxiliary source and correntropy

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