Journal of Navigation最新文献_第6页

A novel pulsar-based template-independent navigation method 一种新的基于脉冲星的模板无关导航方法

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-08-17 DOI: 10.1017/S0373463322000303

Zhize Li, Wei Zheng, Yusong Wang

{"title":"A novel pulsar-based template-independent navigation method","authors":"Zhize Li, Wei Zheng, Yusong Wang","doi":"10.1017/S0373463322000303","DOIUrl":"https://doi.org/10.1017/S0373463322000303","url":null,"abstract":"Abstract Because of the high photon flux, the Crab nebula pulsar is widely used as the observation target for X-ray pulsar-based navigation. The built profile of the Crab pulsar will change over time, however, which means that the pre-calibrated template cannot be used for the long term. In this paper, a novel pulsar-based template-independent navigation method is proposed. The detected phase propagation model is given as a term of position of the vehicle, taking the orbital motion into account. A different method of time-of-arrival process between the recovered profiles is introduced. With the aid of orbital transition matrix, a measurement model is derived to be a term of velocity error of the vehicle varying with time. The state errors of the vehicle are transformed into velocity errors by performing multi-segment observations to achieve the navigation system observability. The navigation equations of the system are then established and can be solved directly. Some simulations are performed to verify the method and suggest that the proposed method is feasible, effective and easy to implement. The precise orbit information of the vehicle can be determined. The state estimation accuracy is basically consistent with the traditional filtering algorithms, and the computational cost is still very low.","PeriodicalId":50120,"journal":{"name":"Journal of Navigation","volume":"75 1","pages":"1128 - 1143"},"PeriodicalIF":2.4,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46278899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A graph method of description of driving behaviour characteristics under the guidance of navigation prompt message 一种在导航提示信息引导下描述驾驶行为特征的图形方法

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-08-15 DOI: 10.1017/S0373463322000273

Liping Yang, Yang Bian, Xiaohua Zhao, Yiping Wu, Hao Liu, Xiaoming Liu

{"title":"A graph method of description of driving behaviour characteristics under the guidance of navigation prompt message","authors":"Liping Yang, Yang Bian, Xiaohua Zhao, Yiping Wu, Hao Liu, Xiaoming Liu","doi":"10.1017/S0373463322000273","DOIUrl":"https://doi.org/10.1017/S0373463322000273","url":null,"abstract":"Abstract To verify whether a graph is suitable for describing driver behaviour performance under the effects of navigation information, this study applies two types of prompt messages: simple and detailed. The simple messages contain only direction instructions, while the detailed messages contain distance, direction, road and lane instructions. A driving simulation experiment was designed to collect the empirical data. Two vehicle operating indicators (velocity and lateral offset), and two driver manoeuvre indicators (accelerator power and steering wheel angle) were selected, and T-test was used to compare the differences of behavioural performance. Driving behaviour graphs were constructed for the two message conditions; their characteristics and similarities were further analysed. Finally, the results of T-test of behavioural performance and similarity results of the driving behaviour graphs were compared. Results indicated that the two different types of prompt messages were associated with significant differences in driving behaviours, which implies that it is feasible to describe the characteristics of driving behaviours guided by navigation information using such graphs. This study provides a new method for systematically exploring the mechanisms affecting drivers’ response to navigation information, and presents a new perspective for the optimisation of navigation information.","PeriodicalId":50120,"journal":{"name":"Journal of Navigation","volume":"75 1","pages":"1167 - 1189"},"PeriodicalIF":2.4,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49315498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection of maritime traffic anomalies using Satellite-AIS and multisensory satellite imageries: Application to the 2021 Suez Canal obstruction 使用卫星AIS和多传感器卫星图像检测海上交通异常：应用于2021年苏伊士运河阻塞

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-08-15 DOI: 10.1017/S0373463322000364

Ahmed Harun-Al-Rashid, Chanjun Yang, Dae-Woon Shin

引用次数: 3

Agile collision avoidance for unmanned surface vehicles based on collision shielded model prediction control algorithm 基于碰撞屏蔽模型预测控制算法的无人水面车辆敏捷避碰

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-07-18 DOI: 10.1017/S0373463322000315

Yihan Tao, Jia-lu Du

{"title":"Agile collision avoidance for unmanned surface vehicles based on collision shielded model prediction control algorithm","authors":"Yihan Tao, Jia-lu Du","doi":"10.1017/S0373463322000315","DOIUrl":"https://doi.org/10.1017/S0373463322000315","url":null,"abstract":"Abstract Collision avoidance (COLAV) is a prerequisite for the navigation safety of unmanned surface vehicles (USVs). Since USVs have to avoid obstacles clearly and timely, i.e. the COLAV should be agile, the COLAV algorithm should have low computation complexity and make efficient COLAV decisions. However, balancing between the computation complexity and the COLAV decision optimality is still intractable at present. This paper innovatively proposes a COLAV algorithm for USVs by combining the velocity obstacle method with the predictive model method, named the collision shielded model predictive control (CS-MPC) algorithm, such that the agility of USVs COLAV is improved. The runtime of the proposed COLAV algorithm is shortened by shielding the dangerous parts of the search space of the COLAV decisions, and the COLAV decision is efficient with the aid of the accurately predicted motion trajectory by the motion mathematical model of USVs. As such, the USV can safely navigate in complex water areas where multiple vessels and obstacles exist. A series of simulations on a yacht in different kinds of encounter situations were carried out to verify the effectiveness and the agility of the proposed CS-MPC COLAV algorithm.","PeriodicalId":50120,"journal":{"name":"Journal of Navigation","volume":"75 1","pages":"1243 - 1267"},"PeriodicalIF":2.4,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47828511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Determination of latitude by two fixed-altitude sightings 通过两次固定高度观测确定纬度

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-07-01 DOI: 10.1017/S0373463322000406

B. Villmoare

引用次数: 0

Dual-channel LIDAR searching, positioning, tracking and landing system for rotorcraft from ships at sea 用于海上船舶旋翼机的双通道激光雷达搜索、定位、跟踪和着陆系统

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-07-01 DOI: 10.1017/S0373463322000340

Tao Zeng, Hua Wang, Xiucong Sun, Hui Li, Zhen Lu, Feifei Tong, Hao Cheng, CanLun Zheng, Mengying Zhang

{"title":"Dual-channel LIDAR searching, positioning, tracking and landing system for rotorcraft from ships at sea","authors":"Tao Zeng, Hua Wang, Xiucong Sun, Hui Li, Zhen Lu, Feifei Tong, Hao Cheng, CanLun Zheng, Mengying Zhang","doi":"10.1017/S0373463322000340","DOIUrl":"https://doi.org/10.1017/S0373463322000340","url":null,"abstract":"Abstract To address the shortcomings of existing methods for rotorcraft searching, positioning, tracking and landing on a ship at sea, a dual-channel LIDAR searching, positioning, tracking and landing system (DCLSPTLS) is proposed in this paper, which utilises the multi-pulse laser echoes accumulation method and the physical phenomenon that the laser reflectivity of the ship deck in the near-infrared band is four orders of magnitude higher than that of the sea surface. The DCLSPTLS searching and positioning model, tracking model and landing model are established, respectively. The searching and positioning model can provide estimates of the azimuth angle, the distance of the ship relative to the rotorcraft and the ship's course. With the above parameters as inputs, the total tracking time and the direction of the rotorcraft tracking speed can be obtained by using the tracking model. The landing model can calculate the pitch and the roll angles of the ship's deck relative to the rotorcraft by using the least squares method and the laser irradiation coordinates. The simulation shows that the DCLSPTLS can realise the functions of rotorcraft searching, positioning, tracking and landing by using the above parameters. To verify the effectiveness of the DCLSPTLS, a functional test is performed using a rotorcraft and a model ship on a lake. The test results are consistent with the results of the simulation.","PeriodicalId":50120,"journal":{"name":"Journal of Navigation","volume":"75 1","pages":"901 - 927"},"PeriodicalIF":2.4,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43195028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Doppler enhanced TDCP algorithm based on terrain adaptive and robust Kalman filter using a stand-alone receiver 基于地形自适应和鲁棒卡尔曼滤波的多普勒增强TDCP算法

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-07-01 DOI: 10.1017/S0373463322000339

Kefan Shao, Zengke Li, Zhehua Yang, Zan Liu, Yaowen Sun

引用次数: 2

NAV volume 75 issue 4 Cover and Back matter NAV第75卷第4期封面和封底

IF 2.4 4区工程技术

Journal of Navigation Pub Date : 2022-07-01 DOI: 10.1017/s0373463322000492

引用次数: 0

NAV volume 75 issue 4 Cover and Front matter NAV第75卷第4期封面和封面问题

IF 2.4 4区工程技术