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基于指紋庫更新補償的波束跟蹤算法研究
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中國電子科技集團公司第五十四研究所

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TN928

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CUI ZiYu,WEI Hao,Zhao Qi,Wang Yazhou
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    摘要:

    針對拒止、復雜電磁環(huán)境下,高動(dòng)態(tài)無(wú)人節點(diǎn)定向通信面臨的坐標信息不精確、飛行姿態(tài)和軌跡變化劇烈等問(wèn)題,為保持可靠的波束對準與跟蹤,提出了一種基于卡爾曼濾波的指紋庫更新補償算法。首先,利用卡爾曼濾波算法對自身姿態(tài)進(jìn)行預測更新,建立新的載體坐標系;利用改進(jìn)的算法對波束指向進(jìn)行預測更新,并利用指紋庫對狀態(tài)向量均值和協(xié)方差矩陣進(jìn)行更新補償,調節采樣比例,并將新的數據存入指紋庫對指紋庫數據更新,然后進(jìn)行二次狀態(tài)信息預測,完成最終波束指向。整體設計的波束跟蹤算法流程更加符合實(shí)際應用場(chǎng)景,滿(mǎn)足無(wú)人機自組網(wǎng)的需求。仿真結果表明,在半波束寬度為3°,100個(gè)通信時(shí)隙中,維持正常通信的成功率有92%以上,相比傳統跟蹤算法提高了8%,具有更加穩定的通信質(zhì)量。

    Abstract:

    In view of the problems of inaccurate coordinate information, dramatic changes in flight attitude and trajectory in the directional communication of high dynamic unmanned nodes under the complex electromagnetic environment. In order to maintain reliable beam aligning and tracking, a fingerprint database update compensation algorithm based on Kalman filter is proposed. Firstly, the Kalman filter algorithm is used to predict and update its own attitude, and a new carrier coordinate system is established. The improved algorithm is used to predict and update the beam pointing, and the fingerprint database is used to update and compensate the mean value and covariance matrix of the state vector. Adjusting the sampling ratio , and the new data is stored in the fingerprint database to update the fingerprint database data. then the secondary state information is predicted to complete the final beam pointing. The overall design of the beam tracking algorithm process is more in line with the actual application scenarios and meets the needs of UAV ad hoc networks. The simulation results show that the success rate of maintaining normal communication is more than 92 % in 100 communication time slots with half-beam width of 3 °, which is 8 % higher than that of traditional tracking algorithm. It has more stable communication quality.

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崔字宇,魏浩,趙琪,王亞舟.基于指紋庫更新補償的波束跟蹤算法研究計算機測量與控制[J].,2024,32(2):291-298.

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歷史
  • 收稿日期:2023-11-03
  • 最后修改日期:2023-11-23
  • 錄用日期:2023-11-24
  • 在線(xiàn)發(fā)布日期: 2024-03-20
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