The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation
A new method based on the innovation of Kalman filter and extrapolation-accumulation is proposed to detect weak frequency anomalies in atomic clocks with short detection time and high detection probability. In this method, the detection statistics of the innovation extrapolation method in several ep...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2021-05-01
|
| Series: | Measurement + Control |
| Online Access: | https://doi.org/10.1177/00202940211000073 |
| _version_ | 1818590408009056256 |
|---|---|
| author | Ran Yan Junliang Liu Jianfeng Wu Chao Xu Yonghui Hu |
| author_facet | Ran Yan Junliang Liu Jianfeng Wu Chao Xu Yonghui Hu |
| author_sort | Ran Yan |
| collection | DOAJ |
| description | A new method based on the innovation of Kalman filter and extrapolation-accumulation is proposed to detect weak frequency anomalies in atomic clocks with short detection time and high detection probability. In this method, the detection statistics of the innovation extrapolation method in several epochs are accumulated. It avoids the influence of outliers, increases the noncentrality parameter of chi-square distribution, and realizes more effective detection of weak frequency anomalies. The simulation results show that compared with the innovation method and the innovation extrapolation method, the new method has a higher detection probability for micro frequency anomalies, and the detection time is shortened. The new method is used to analyze the real data of the cesium atomic clock, and the results are consistent with the simulation results. |
| first_indexed | 2024-12-16T09:56:04Z |
| format | Article |
| id | doaj.art-784131baba7a4e9295033e093e77571e |
| institution | Directory Open Access Journal |
| issn | 0020-2940 |
| language | English |
| last_indexed | 2024-12-16T09:56:04Z |
| publishDate | 2021-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Measurement + Control |
| spelling | doaj.art-784131baba7a4e9295033e093e77571e2022-12-21T22:35:55ZengSAGE PublishingMeasurement + Control0020-29402021-05-015410.1177/00202940211000073The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulationRan Yan0Junliang Liu1Jianfeng Wu2Chao Xu3Yonghui Hu4University of the Chinese Academy of Sciences, Beijing, People’s Republic of ChinaKey Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi’an, People’s Republic of ChinaSchool of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of ChinaKey Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi’an, People’s Republic of ChinaKey Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi’an, People’s Republic of ChinaA new method based on the innovation of Kalman filter and extrapolation-accumulation is proposed to detect weak frequency anomalies in atomic clocks with short detection time and high detection probability. In this method, the detection statistics of the innovation extrapolation method in several epochs are accumulated. It avoids the influence of outliers, increases the noncentrality parameter of chi-square distribution, and realizes more effective detection of weak frequency anomalies. The simulation results show that compared with the innovation method and the innovation extrapolation method, the new method has a higher detection probability for micro frequency anomalies, and the detection time is shortened. The new method is used to analyze the real data of the cesium atomic clock, and the results are consistent with the simulation results.https://doi.org/10.1177/00202940211000073 |
| spellingShingle | Ran Yan Junliang Liu Jianfeng Wu Chao Xu Yonghui Hu The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation Measurement + Control |
| title | The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation |
| title_full | The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation |
| title_fullStr | The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation |
| title_full_unstemmed | The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation |
| title_short | The weak frequency anomaly detection method of atomic clocks based on Kalman filter and extrapolation-accumulation |
| title_sort | weak frequency anomaly detection method of atomic clocks based on kalman filter and extrapolation accumulation |
| url | https://doi.org/10.1177/00202940211000073 |
| work_keys_str_mv | AT ranyan theweakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT junliangliu theweakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT jianfengwu theweakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT chaoxu theweakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT yonghuihu theweakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT ranyan weakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT junliangliu weakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT jianfengwu weakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT chaoxu weakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation AT yonghuihu weakfrequencyanomalydetectionmethodofatomicclocksbasedonkalmanfilterandextrapolationaccumulation |