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高頻地波雷達海上目標航跡探測算法研究

發(fā)布時間:2018-04-16 05:41

  本文選題:高頻地波雷達 + AIS。 參考:《內蒙古大學》2015年碩士論文


【摘要】:海洋是國民經(jīng)濟可持續(xù)發(fā)展的戰(zhàn)略空間,也是國家安全的重要屏障,因此各國都很重視海洋安全的監(jiān)測。高頻地波雷達(High Frequency Surface Wave Radar, HFSWR)利用高頻電磁波在地球表面繞射效應使電波沿地球曲面層傳播,實現(xiàn)超視距探測。因其超視距、大范圍、全天候、低成本等優(yōu)點,已成為海洋監(jiān)測的重要手段,實現(xiàn)對專屬經(jīng)濟區(qū)的有效監(jiān)測,維護國家海洋權益。所以,運用高頻地波雷達對海上目標的航跡進行相關算法研究具有實際應用價值。本文通過高頻地波雷達對海上目標點跡數(shù)據(jù)的探測,發(fā)展合適的航跡生成算法,實現(xiàn)目標航跡的生成及跟蹤探測。論文主要完成以下研究內容:數(shù)據(jù)的分析及處理:對實測的高頻地波雷達的點跡數(shù)據(jù)及艦船自動識別系統(tǒng)(Automatic Identification System, AIS)數(shù)據(jù)的特點進行分析,并將原始二進制數(shù)據(jù)格式轉換為.txt文本格式,從數(shù)據(jù)信息中提取出航跡生成所用到的參數(shù)。確定航跡起始及生成算法:完成修正邏輯法來設定航跡的起始,解決了目標在個別時刻消失不會對相應的關聯(lián)造成太大影響及海雜波干擾的問題。分析了航跡起始、數(shù)據(jù)關聯(lián)、跟蹤濾波及航跡終結的航跡跟蹤原理及算法,航跡穩(wěn)定之后,如果目標出現(xiàn)了暫時消失,采用自適應α-β濾波算法和常增益α-p濾波算法繼續(xù)跟蹤和鎖定其運動規(guī)律,延續(xù)適當批次的航跡,目標再次出現(xiàn)即可實現(xiàn)繼續(xù)跟蹤。數(shù)據(jù)關聯(lián):航跡生成過程中目標量測點跡與已生成航跡進行關聯(lián)選用最近鄰的數(shù)據(jù)關聯(lián)方法,使用數(shù)據(jù)中的角度、距離和徑向速度作為關聯(lián)特征信息,設置關聯(lián)波門將一定時間內的點跡數(shù)據(jù)和航跡數(shù)據(jù)進行關聯(lián)判定。生成航跡的驗證:將利用自適應α-p濾波算法和常增益α-β濾波算法各自生成的高頻地波雷達目標航跡分別與同步AIS航跡進行關聯(lián)判斷,驗證航跡生成算法的有效性,且從關聯(lián)結果可以區(qū)分合作與非合作船只,提高了生成航跡的準確度。設計艦船監(jiān)測系統(tǒng):艦船監(jiān)測應用系統(tǒng)的設計環(huán)境是Visual Studio2010、編程語言是C#語言。系統(tǒng)實現(xiàn)的主要功能有高頻地波雷達探測到點跡信息的數(shù)據(jù)定位、AIS信息的數(shù)據(jù)定位、讀取并顯示自適應α-β濾波算法和常增益α-β濾波算法生成的航跡、最近鄰算法航跡關聯(lián)結果顯示、放大縮小地圖以及利用經(jīng)緯度的信息查找數(shù)據(jù)。
[Abstract]:Ocean is not only the strategic space for the sustainable development of national economy, but also an important barrier for national security. Therefore, many countries attach great importance to the monitoring of marine security.High Frequency Surface Wave radar (HFSWR) makes use of the diffraction effect of high frequency electromagnetic wave on the surface of the earth to make the radio wave propagate along the surface of the earth, so that the over-the-horizon detection can be realized.Because of its advantages of over-the-horizon, wide range, all-weather and low cost, it has become an important means of ocean monitoring, which can effectively monitor the exclusive economic zone and safeguard the national marine rights and interests.Therefore, it has practical application value to study the correlation algorithm of sea target track by using high frequency ground wave radar.In this paper, an appropriate track generation algorithm is developed to generate and track the target track by using the high frequency ground wave radar to detect the track data of the target at sea.The main contents of this paper are as follows: data analysis and processing: the characteristics of spot track data and automatic Identification system (AIS) data of HHF ground wave radar are analyzed.The original binary data format is converted to .txt text format, and the parameters used for track generation are extracted from the data information.The algorithm of track initiation and generation is determined: the modified logic method is completed to set the start of the track, which solves the problem that the disappearance of the target at a particular time will not cause too much influence on the corresponding association and the sea clutter interference.The track tracking principles and algorithms of track initiation, data association, tracking filtering and track termination are analyzed. After the track is stabilized, if the target appears to disappear temporarily,The adaptive 偽-尾 filtering algorithm and constant gain 偽-p filter algorithm are used to track and lock the motion of the target.Data association: in the course of track generation, the target measured track is associated with the generated track using the nearest neighbor data association method, and the angle, distance and radial velocity in the data are used as the correlation characteristic information.Set the correlation wave keeper in a certain time point trace data and track data to determine the association.Verification of generated track: the target tracks generated by adaptive 偽 -p filtering algorithm and constant gain 偽-尾 filter algorithm are correlated with synchronous AIS tracks, respectively, to verify the effectiveness of the track generation algorithm.From the correlation results, the cooperative and non-cooperative vessels can be distinguished, and the accuracy of track generation is improved.Design of warship monitoring system: the design environment of warship monitoring application system is Visual Studio 2010, and the programming language is C # language.The main functions of the system are to locate the AIS information of the high frequency ground wave radar, to read and display the track generated by the adaptive 偽-尾 filtering algorithm and the constant gain 偽-尾 filtering algorithm.The results of track association of nearest neighbor algorithm show that the map is enlarged and reduced and the longitude and latitude information is used to find the data.
【學位授予單位】:內蒙古大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:U675.7

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