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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Advanced Navigation Technology
Journal Basic Information
Journal DOI :
The Korea Navigation Institute
Editor in Chief :
Volume & Issues
Volume 19, Issue 6 - Dec 2015
Volume 19, Issue 5 - Oct 2015
Volume 19, Issue 4 - Aug 2015
Volume 19, Issue 3 - Jun 2015
Volume 19, Issue 2 - Apr 2015
Volume 19, Issue 1 - Feb 2015
Selecting the target year
The Performance Enhancement of Automatic Dependent Surveillance - Broadcast Using Information Fusion Method
Cho, Taehwan ; Kim, Kanghee ; Kim, inhyuk ; Choi, Sangbang ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 345~353
DOI : 10.12673/jant.2015.19.5.345
In this paper, we proposed an information fusion method for enhancement of automatic dependent surveillance - broadcast (ADS-B) system which is one of the next generation navigation system. Although ADS-B provides better performance than traditional radar, ADS-B still has error due to dependence of global navigation satellite system (GNSS) information. In this paper, we improved the ADS-B performance using information fusion of multilateration (MLAT) and wide area multilateration (WAM). Information fusion provides accurate data compared to original data. Mostly, information fusion methods use Kalman filter or IMM(interacting multiple model) filter as a subfilter. However, we used Robust IMM filter as a subfilter to improve the aircraft tracking performance. Also, we use actual ADS-B data not virtual data to increase reliability of our information fusion method.
Development of Vessel Communication System for Integrated Management and Inter-exchange of Maritime Data
Kang, Nam-seon ; Kim, Ji-goo ; Lee, Seon-ho ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 354~362
DOI : 10.12673/jant.2015.19.5.354
In this study, for integrated management and inter-exchange of operational data generated by ships and land-side information on safe and business, a vessel communication system with modular functions was designed that applied high efficiency compression, least-cost algorithms and Inmarsat FBB connection automation system. Performance test at the KTsat Kumsan satellite earth station; system was found to delivered an average transfer speed of 7 kB/S, which was significant improvement from the existing commercial product's average speed of 5 kB/S. It also delivered twice the efficiency of the existing product in terms of compression rate and transfer of the most widely used office files in maritime businesses.
A Study on the Deployment of a Sea Based Sensor Platform for the Detection of a SLBM
Kim, Jiwon ; Kwon, Yong Soo ; Kim, Namgi ; Kim, Dong Min ; Park, Young Han ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 363~369
DOI : 10.12673/jant.2015.19.5.363
This paper describes deployment of a sea based sensor platform for the detection of a submarine launched ballistic missile (SLBM). Recently, North Korea successfully conducted the underwater launching test of the SLBM, which will seriously threaten the global security. To defend these threats successfully, a sensor platform of the ballistic missile defense (BMD) should be deployed in the area of high detection probability of the missile. The maximum detection range characteristics of the typical radar sensor system, however, depend on the radar cross section (RCS) and flight trajectories of the target. In this point of view, this work analyzed the flight trajectories based on the tactics and calculated the RCS of the SLBM. In addition, sea based sensor platform position is proposed from the analysis of the detection time.
Flight Safety Improvement on Surion through Circuit Design and Software Reformation of Data Acquisition Unit
Jun, Byung-kyu ; Jeong, Sang-gyu ; Kim, Young-mok ; Chang, In-ki ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 370~378
DOI : 10.12673/jant.2015.19.5.370
The data acquisition unit, signal acquiring and processing equipment, processes and provides major data of an aircraft such as engine system, power train system, hydraulic system, etc. However, it had lots of failure related to the system during production test flight, and it is necessary to fix them perfectly as soon as possible because of the significance of the equipment. In this paper, it contains failure classification and analysis for each defect element to improve whole software as well as electrical circuit. Particularly, utilizing Fault Injection Method based interworking test, more efficient improvement activity was performed for not only equipment level but also aircraft level, and as a result, it is achieved that considerable betterment of Surion quality and flight safety.
A Study for Avoidance Alarm Algorithm with ADS-B Message
Ju, Yo-Han ; Ku, SungKwan ; Hong, Gyo-Young ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 379~388
DOI : 10.12673/jant.2015.19.5.379
In the end of 1990's, future free flight technology had been developed and tested in America and government established the plan for free flight until 2017. Aircraft separation assurance must be secured essentially to avoid collision between aircrafts before Free Flight comes true. Now, Civil aircraft has rules about avoidance activity with traffic collision avoidance system (TCAS) but it can't apply to light aircraft. So there is a need about alternative method to apply light-aircraft because it has space and price problem to use TCAS. In this paper, TCAS algorithm has been modified and verified by simulating with LABVIEW program under ADS-B condition to get miniaturization and weight lighting cheaply. By simulating, collision alert algorithm is analyzed and verified with collision situation proposed by ICAO, and 100% checked for performing the alert announciation on all cases by TCAS standards.
Transfer Alignment Using Velocity Matching/Parameter Tuning and Its Performance and Observability Analysis
Yang, Cheol-Kwan ; Park, Ki-Young ; Kim, Hyoung-Min ; Shim, Duk-Sun ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 389~394
DOI : 10.12673/jant.2015.19.5.389
This paper considers the transfer alignment in the inertial navigation system which has lever-arm and the time delay in the velocity measurement. We suggest a method to improve the performance of the velocity matching. First, we analyze the estimation performance of the velocity matching through the tuning of the two covariance matrices of process noise and measurement noise. Next we provide some maneuvering conditions of the vehicles to improve the estimation performance using the observability analysis. The analysis results are verified using the computer simulations, which show that cruise movements do not provide the azimuth estimation of the vehicles, while east or north accelerating movement can provide.
Development and Verification of Lightning Induced Transient Protection Device for Avionics Computer
Sim, Yong-gi ; Ahn, Tae-sik ; Park, Jun-hyun ; Han, Jong-pyo ; Yang, Seo-hee ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 395~402
DOI : 10.12673/jant.2015.19.5.395
This paper introduces the design details and test procedures of the lightning induced transient protection device for protecting the damage caused by indirect lightning strike on the computer mounted on the aircraft. Lightning induced surge voltage is bring a malfunction or damage to the aircraft electrical and electronic equipment, that is referred to indirect effects of lightning. In order to protect the electronic equipment on aircraft from the indirect effects of lightning, that is achieved by analyzing the effect on aircraft from lightning and protect design for each devices. In this paper, we introduce an indirect lightning strike level decisions, the protection circuit design method according to the chosen level through the RTCA DO-160G Section 22 category analysis and selection was performed in order to protect the damage caused by indirect lightning strikes in the protected equipment. In addition, we show the indirect lightning effects verification test performed to validate the designed protection circuits.
The Deviation Distribution of Target on the ILS Final Approach Segment Using ADS-B Message
Ku, SungKwan ; Lee, Young-Jong ; Shin, DaiWon ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 403~410
DOI : 10.12673/jant.2015.19.5.403
ADS-B can provide high accurate position information and faster update rate than Radar system and it is a technique that can supplement or replace the Radar. Recently ADS-B has been applied to the actual aircraft operation because to increase air transportation traffic and required to high accurate surveillance. In this study, we surveyed analysis of position deviation distribution analysis and received actual ADS-B trajectory data for conformed precise surveillance on the near airport area using ADS-B message. For that, we received the precision instrument approach ADS-B trajectory data using instrument landing system, and can analyse about target deviation distribution on the final approach segment about precision instrument approach. The result of analysis is mean distance of target deviation -0.04 m and standard deviation 6.71 m on between ADS-B target and extended runway centerline. Also that is to conformed the ADS-B message trajectory available to provide relatively exact surveillance information.
Design of Web-Based Simulation Framework for Real-Time Infographics
Shin, Seung-Hyeok ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 411~416
DOI : 10.12673/jant.2015.19.5.411
The service size of an IoT environment is determined by the various types of sensors. A gateway for relaying sensor information from various sensors is a representative middleware system, and an infographics showing the information with a graphical presentation of data and information is a client system for representing real-time information efficiently, it is necessary a similar test bed with IoT environment to develop a real-time infographics displaying a large amount of information effectively. The testing tools used in developing the existing network systems are mostly made to be suitable for functional testing and performance testing of the driven unit. In this paper, we proposed a mean which is web-based simulation framework to create a variety of information required for real-time infographics development, and evaluate the function of the system proposed by the test function of the comparison with the previous network test tool.
Study on the Sensor Gateway for Receive the Real-Time Big Data in the IoT Environment
Shin, Seung-Hyeok ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 417~422
DOI : 10.12673/jant.2015.19.5.417
A service size of the IoT environment is determined by the number of sensors. The number of sensors increase means increases the amount of data generated by the IoT environment. There are studies to reliably operate a network for research and operational dynamic buffer for data when network congestion control congestion in the network environment. There are also studies of the stream data that has been processed in the connectionless network environment. In this study, we propose a sensor gateway for processing big data of the IoT environment. For this, review the RESTful for designing a sensor middleware, and apply the double-buffer algorithm to process the stream data efficiently. Finally, it generates a big data traffic using the MJpeg stream that is based on the HTTP protocol over TCP to evaluate the proposed system, with open source media player VLC using the image received and compare the throughput performance.
A Study of FC-NIC Design Using zynq SoC for Host Load Reduction
Hwang, Byeung-Chang ; Seo, Jung-hoon ; Kim, Young-Su ; Ha, Sung-woo ; Kim, Jae-Young ; Jang, Sun-geun ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 423~432
DOI : 10.12673/jant.2015.19.5.423
This paper shows that design, manufacture and the performance of FC-NIC (fibre channel network interface card) for network unit configuration which is based on one of the 5 main configuration items of the common functional module for IMA (integrated modular Avionics) architecture. Especially, FC-NIC uses zynq SoC (system on chip) for host load reductions. The host merely transmit FC destination address, source memory location and size information to the FC-NIC. After then the FC-NIC read the host memory via DMA (direct memory access). FC upper layer protocol and sequence process at local processor and programmable logic of FC-NIC zynq SoC. It enables to free from host load for external communication. The performance of FC-NIC shows average 5.47 us low end-to-end latency at 2.125 Gbps line speed. It represent that FC-NIC is one of good candidate network for IMA.
A Study on the Dynamic Voltage Restorer to Application Luminaire for Emergency Exit Sign Operation to the Energy Storage System
Hwang, Lark-Hoon ; Na, Seung-kwon ; Kim, Jin Sun ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 433~439
DOI : 10.12673/jant.2015.19.5.433
Recently, Interest in power the quality was increased because of increasing the use of sensitive load equipment into an electrical disturbance such as computer, Electricity, Electronics, Telecommunications and semiconductor device. In addition, To enhance power quality, the instantaneous voltage drop occurred in precision load equipment is a need for proper compensation. In order to solve the problem, The developed dynamic voltage restorer (DVR) using an electric double layer capacitor (EDLC) has been applied. In this paper, We will do study to apply hybrid capacitors that have high energy density to the same size compared to the EDLC to DVR. Also, As a emergency luminaires of emergency power supply that we can support more than 10 years of life was confirmed the applicability of hybrid capacitor.
HTML5 Analysis and Research for the Reduction of the Initial Load Time of a Web Browser
Yun, Jun-soo ; Park, Jin-tae ; Hwang, Hyun-seo ; Phyo, Gyung-soo ; Moon, Il-young ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 440~445
DOI : 10.12673/jant.2015.19.5.440
Sensor Abstraction for U-health Application Development: Filtering and Summarization for Accuracy Enhancement
Oh, Sam Kweon ; Lim, Eun Chong ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 446~451
DOI : 10.12673/jant.2015.19.5.446
Recently, researches on sensor-based U-health applications that provide personal health information such as blood pressure, body temperature, and glucose, have actively been studied. The health information obtained via sensors, however, may have accuracy problems so that they can not be used unprocessed. This paper proposes a sensor abstraction layer for enhancing the accuracy of sensor readings from biomedical sensors that interact with smart phones. This layer recognizes sensor types and converts sensor readings into a form as specified in ISO/IEEE 11073 Personal Health Standard. When necessary, not only a filtering method that eliminates outlier values from sensor readings but also a summarization method that transforms them into more suitable forms, can also be applied. An android-based development board is used for the evaluation of proposed sensor abstraction layer. The results obtained by applying filtering and summarization show improved accuracy over unprocessed sensor readings of the body temperature and heartbeat sensors.
Design and Implementation of Trackball Based UI for Efficient Text Entry on Smartwatch
Lee, Ji-eun ; Ahn, Jung-eun ; Park, Kyeongsoo ; Choi, Go-eun ; Moon, Il-Young ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 452~457
DOI : 10.12673/jant.2015.19.5.452
Recently, wearable devices have gained popularity with familiar form factors and designs of eye-wear and watch to satisfy wearers' various preferences. Since UI/UX of smartphones can not be applied directly on smaller wearable devices, text entry on wearable devices is still problematic. In this paper, we first identify UI/UX problems of existing input methods and propose a new input method for wearable devices specifically targeting smartwatch platforms. We design and implement an efficient text entry method for wearable devices using trackball sensor and evaluate its performance and usability.
Implementation of Movement Detection System for Patient on Bed
Baec, Sung-Ho ; Jeon, Min-Sik ; Ko, Bong-Jin ;
The Journal of Advanced Navigation Technology, volume 19, issue 5, 2015, Pages 458~463
DOI : 10.12673/jant.2015.19.5.458
This paper suggests detection system for the movement of patient on bed based on IEEE802.15.4 by using pressure pad and guard sensor. The system is designed to detect ordinary activities of patients on bed as well as patients' falling from the bed while sleeping at night. The node that is installed at bed sends data to gather when the pressure pad and sensor of guard detect patients' activities and falling. These data sent to gather are transmitted to monitor at help desk by TCP/IP communication. To remove unnecessary data that occurred due to switch chattering during tossing and turning, timer of MCU is used. Also, Communication module can change transmission power to apply this system to various environments of hospital room. Therefore, the nurse can take care of patients on bed in real time with data about patients' conditions.