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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 16, Issue 6 - Dec 2012
Volume 16, Issue 5 - Oct 2012
Volume 16, Issue 4 - Aug 2012
Volume 16, Issue 3 - Jun 2012
Volume 16, Issue 2 - Apr 2012
Volume 16, Issue 1 - Feb 2012
Selecting the target year
Flight control of a small unmanned aerial vehicle using a dynamic compensator
Kim, Heui-Joo ; Kim, Jea-Wook ; Lee, Kang-Woong ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 571~577
DOI : 10.12673/jkoni.2012.16.4.571
In this paper, we design a flight controller using a dynamic compensator for a small unmanned aerial vehicle. The proposed method ensures flight stability during altitude holding and waypoints passing by improving the transient response and steady state error. The control system consists of dual feedback loops with an inner loop and a outer loop. The inner loop has a PD controller to improves the transient response and the outer loop has a dynamic compensator to reduce overshoot in the transient response and improve the steady state error. The performance of the proposed method is evaluated by flight test on a small UAV.
A Study on the improvement of the Multilateration data by emplying an IMM filter
Cho, Tae-Hwan ; Song, In-Seong ; Jang, Eun-Mee ; Yoon, Wan-Oh ; Choi, Sang-Bang ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 578~585
DOI : 10.12673/jkoni.2012.16.4.578
CNS/ATM(Communication Navigation Surveillance/Air Traffic Management) was adopted as a standard navigation system of 21st century. Therefore, ICAO(International Civil Aviation Organization) members are developing the technology and infrastructure of CNS/ATM. ADS-B(Automatic Dependent Surveillance-Broadcast) system and Multilateration system are being implemented in the surveillance field of CNS/ATM. Multilateration system is installed in order to complement radar system and to surveil blind areas. Also, Multilateration system using TDOA(Time Difference Of Arrival) is more accurate than radar. In this paper, we applied an IMM(Interacting Multiple Model) filter which is widely used in radar systems to the Multilateration data in order to improve the reliability of the Multilateration data. Comparisons with the original Multilateration data and the Multilateration data with the IMM filter show that the ADS-B data with the IMM filter provides a better performance: 38.37% near the airport, 20.86% around 10 miles of the airport.
2-Input 2-Output ANFIS Controller for Trajectory Tracking of Mobile Robot
Lee, Hong-Kyu ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 586~592
DOI : 10.12673/jkoni.2012.16.4.586
One approach of the control of a nonlinear system that has gained some success employs a fuzzy structure in cooperation with a neural network(ANFIS). The traditional ANFIS can only model and control the process in single-dimensional output nature in spite of multi-dimensional input. The membership function parameters are tuned using a combination of least squares estimation and back-propagation algorithm. In the case of a mobile robot, we need to drive left and right wheel respectively. In this paper, we proposed the control system architecture for a mobile robotic system that employs the 2-input 2-output ANFIS controller for trajectory tracking. Simulation results and preliminary evaluation show that the proposed architecture is a feasible one for mobile robotic systems.
Multiple-Hypothesis RAIM Algorithm with an RRAIM Concept
Yun, Ho ; Kee, Changdon ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 593~601
DOI : 10.12673/jkoni.2012.16.4.593
This paper develops and analyzes a new multiple-hypothesis Receiver Autonomous Integrity Monitoring (RAIM) algorithm as a candidate for future standard architecture. The proposed algorithm can handle simultaneous multiple failures as well as a single failure. It uses measurement residuals and satellite observation matrices of several consecutive epochs for Failure Detection and Exclusion (FDE). The proposed algorithm redueces the Minimum Detectable Bias (MDB) via the Relative RAIM (RRAIM) scheme. Simulation results show that the proposed algorithm can detect and filter out multiple failures in tens of meters.
Modeling of GPS measurement noise for estimating smoothed pseudorange and ionospheric delay
Han, Deok-Hwa ; Yoon, Ho ; Kee, Chang-Don ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 602~610
DOI : 10.12673/jkoni.2012.16.4.602
Ionospheric delay error, one of main error sources in GPS signal, varies with signal frequency. Dual-frequency user uses L1, L2 frequency pseudorange to estimate the ionospheric delay, and there are errors caused by pseudorange measurement noise. So, filter is usually used to smooth the measurement. Weighted hatch filter can estimate optimal smoothed pseudorange measurement. But measurement noise model is needed to use this filter. In this paper, measurement noise modeling is conducted for NDGPS reference station. Using noise modeling result, weighted hatch filter estimate smoothed pseudorange measurement and ionospheric delay. Standard deviation of ionospheric dealy error drops to one-twenty fifth of non-filtered result.
A Study On The Effect of CDTI With Air Traffic Information
Gil, Hyun-Cheol ; Ahn, Dong-Mhan ; Hong, Gyo-Young ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 611~618
DOI : 10.12673/jkoni.2012.16.4.611
ICAO has recommended the introduction of New CNS/ATM based on GNSS technologies and Data link communication to purpose increasing air traffic demand. The CNS/ATM is composed of communication, Navigation, Surveillance and Air Traffic Management. Cockpit Display Traffic Information(CDTI) that is equipment to share air traffic information to Pilot, Traffic Controller and ground vehicles has been built based on Automatic Dependent Surveillance-Broadcast(ADS-B) information in Surveillance field. This paper is research that what is the effect between pilot and controller through CDTI. Based on ATC communication between Pilot and Controller, We construct simulation environment and did a comparative analysis of it. according to result, We can verify that CDTI makes aircraft Call sign, Position, Altitude information read rate, and notice of air traffic information between Pilot and Controller more improve than ATC environment and Existing Radar System.
Study on the Ambiguity Difference Adjustment between Reference Station Cells for the Improvement in Rover's Continuous Network-RTK Positioning
Park, Byung-Woon ; Song, June-Sol ; Kee, Chang-Don ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 619~626
DOI : 10.12673/jkoni.2012.16.4.619
One-way Network-RTK(Real Time Kinematics) is considered as a method which can satisfy moving vehicle's recently-required high accuracy and mobility. When we use one-way Network RTK for vehicle navigation, multiple cells-based system is required to provide the service continuously in wide area. The rover which moves through various cells inevitably experiences a correction discontinuity, which is not eliminated by the DD(Double Difference) method and to cause 13cm(horizontal) and 48cm(vertical) position error. We suggest three solutions to reduce this discontinuity, which are identification of master RS with neighbor networks, duplication of communication module to receive corrections from other cells, and ambiguity adjustment between neighbor cells. All of our suggestions reduce the error to 1/4 wavelength in measurement and 3cm in position-domain, and we suggest the ambiguity adjustment is the best when we consider the extendibility of service area and the cost of rover device.
Impacts of GPS Pseudolite Signals on GPS Software Receivers
Kwon, Keum-Cheol ; Jang, Yoon-Jae ; Yang, Cheol-Kwan ; Shim, Duk-Sun ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 627~634
DOI : 10.12673/jkoni.2012.16.4.627
This paper considers the performance of the non-participating GPS software receivers under the presence of GPS pseudolite(PL). For the continuous PL signal and pulsed PL signal, the impact of PL signals on the GPS software receivers is investigated according to the signal strength of the PL and the distance between the PL and the GPS receiver.
Solution of TE Scattering by a Perfectly Conducting Strip Grating Over the Grounded Two Dielectric Layers Applying Fourier-Galerkin Moment Method
Yoon, Uei-Joong ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 635~640
DOI : 10.12673/jkoni.2012.16.4.635
In this paper, The TE (Transverse Electric) scattering problems by a perfectly conducting strip grating over a grounded two dielectric layers are analyzed by applying the conductive boundary condition and the FGMM (Fourier-Galerkin Moment Method) known as a numerical procedure, then the induced surface current density is expanded in a series of the multiplication of the unknown coefficient and the exponential function as a simple function. Generally, the reflected power gets increased according as the relative permittivity
and the thickness of dielectric layer
of the region-2 in the presented structure gets increased, respectively. The sharp variations of the reflected power are due to resonance effects were previously called wood's anomaly, the numerical results show in good agreement with those of the existing papers.
A Wireless Sink Congestion Control by Tournament Scheduling
Lee, Chong-Deuk ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 641~648
DOI : 10.12673/jkoni.2012.16.4.641
The up-streams of the continuous streaming of data packets with lower importance level in the wireless sink node can cause congestion and delay, they affect on energy efficiency, memory size, buffer size, and throughput. This paper proposes a new wireless sink congestion control mechanism based on tournament scheduling. The proposed method consists of two module parts: stream decision module part and service differentiation module part. The final winner in the tournament controls congestion effectively, minimizes packet loss due to congestion, decreases energy consumption, and improves QoS. The simulation result shows that the proposed method is more effective and has better performance compared with those of congestion descriptor-based control method, reliability-based control method, and best-effort transmission control method.
GPS AOA Choosing Algorithm in Environment of High-Power Interference Signals
Hwang, Suk-Seung ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 649~656
DOI : 10.12673/jkoni.2012.16.4.649
The Global Positioning System (GPS) is widely utilized for commercial and military applications to estimate the location of the user or object. The GPS suffers from various intentional or unintentional interferers and it requires estimating the accurate angle-of-arrival (AOA) of the GPS signal to suppress interference signals and to efficiently detect GPS data. Since the power of GPS signal is very low comparing with the noise and interference signals, it is extremely difficult to estimate GPS AOA before despreading. Although AOA of GPS signal is usually estimated after despreading, it requires choosing the GPS AOA among results of AOA estimation because they include AOAs of interference and GPS signals when existing high-power interferers. In this paper, we propose the efficient choosing algorithm of the GPS signal among the estimated AOAs. The proposed algorithm compares the estimated results before despreading and after despreading for choosing AOA of GPS signal. Computer simulation examples are presented to illustrate the performance of the proposed algorithm.
Analysis of density diffusion analysis by Fick's laws in the human body
Che, Gyu-Shik ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 657~664
DOI : 10.12673/jkoni.2012.16.4.657
One of the methods to transmit solute through solvent is diffusion. Various particles or molecules including several charged ions in the body diffuse from high density region to low density due to density difference or external electric field. This kind of mechanism is due to thermal motion of each solute molecules. These situations can be deployed using Fick's first and second laws that govern diffusion phenomena in the body. I analysis these diffusion status of material in the body using above mentioned Fick's laws and then implement them through illustration.
Concept Design to support Authentication and Privacy of Micropayment Model for Traditional Market Activation
Cha, Byung-Rae ; Park, Bong-Goo ; Kim, Dae-Gue ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 665~672
DOI : 10.12673/jkoni.2012.16.4.665
In this paper, we find out about the effort and status of GwangJu metropolitan city to reinvigorate traditional market. And we propose the micro payment model based on Android NFC and tokenization technique to support the small trader's micro payment in aspect of information technology more than the physical infrastructure and environmental improvement projects to reinvigorate the traditional market. The micropayment model supports facilities of payment using smart phone based on NFC, and the encryption and tokenization support the indirection authentication and privacy of users.
A Design of Topic-map based Traditional literature's Digital Ontology
Kim, Dong-Gun ; Jeong, Hwa-Young ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 673~678
DOI : 10.12673/jkoni.2012.16.4.673
Traditional culture's researcher has attempting to public use as a various method. Example is design of digital archive and digital contents. However, in spite of this effort, traditional culture's researcher has difficulty to public use. Because traditional culture is hard to understand, and less interest than the other area. Especially, traditional culture has not environment that user can searching and using the culture's information due to difficult to search the data and layers. We propose a design to make an ontology using information profile for digital contents of traditional culture. Also, we use topic-map for the factors of ontology's relation, and specify their relation using topic vector.
Group Key Management Mechanism for Secure Device in AMI Environment
Jang, Yu-Jong ; Kwak, Jin ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 679~686
DOI : 10.12673/jkoni.2012.16.4.679
Many researches have proposed key management schemes for Smartgrid System. However, previous studies lack the proper considerations for availability and device security. In this paper, we build up cryptographic security improvement for robust Smartgrid Systems. In addition, we propose a public-key management and hash function architecture for robust Smartgrid Systems which supports reduces the number of key and Secure Device in AMI network environments.
The Trend Analysis about Aviation Accident and Incident in Korea Using the ECCAIRS Data
Hong, Seung-Beom ; Kim, Woong-Yi ; Choi, Youn-Chul ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 687~696
DOI : 10.12673/jkoni.2012.16.4.687
Recently, despite of the development of aviation safety, there has not been any significant decline of the aviation accident rate. Therefore, in the international society, it is more focused on removing risk factors based on data collected and analyzed, in order to improve the aviation safety. This research introduces ECCAIRS, which is a program developed by European Union to collect and analyze data regarding risk factors. This is used in Korea since 2010. Moreover, using national aviation accident data collected through ECCAIRS, this research analyzes the distribution of the aviation accidents/incidents, annual and monthly aviation accident rate, flight phase, and division system. The analyzation regarding the tendency of aviation accident/incident will give the direction to approach the quantitative safety management.
The Integrated Model of CCTV, Remote Control and Direct Call for the Elevator Safety based on Information Technology
Kim, Woon-Yong ; Park, Seok-Gyu ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 697~702
DOI : 10.12673/jkoni.2012.16.4.697
With an elevator supply and demand increases, It has been enlarged various requirements for the safety of the elevator. Elevator safety requirements can be the ability to respond to emergencies quickly. Recently, QR code was attached to all elevator for the elevator safety and it is established by law for the Elevator rescue work. And also the elevator system is seeking to utilize more secure elevator with mandatory installation of CCTV and direct call devices. However, CCTV and direct call service is operating on an individual method and it has not been proposed integrated model. In this paper, we propose the safety elevator integration model with CCTV, direct call service and remote control based on smart phone. Using the proposed model, we can be improved the efficiency of maintenance and ability of prompt action in the event of a disaster.
The Wheeled Inverted Pendulum Mobile Robot Control Using Gyroscope and Accelerometer Sensor
Yu, Hwan-Shin ; Park, Hyung-Bae ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 703~708
DOI : 10.12673/jkoni.2012.16.4.703
This paper proposes the improvement of control performance in the wheeled inverted mobile robot system. and describes the modeling of a wheeled inverted pendulum type mobile robot driven by two different wheels for the position and velocity control. The system is sensitive on the parameter variation, therefore control signal should change to maintain desired state of the system in every instant. we designed proportional-plus-integral controller for our system, After linearization, the system was still unstable, throughout stability analysis of the system, we designed the values of the gains of a proportional-plus-integral controller. From the experimental results, we can find that the performance of the proposed method is better than of the manual tuning method.
Electricity Consumption Information Transmission Protocol with ID-based Key Distribution Method
Jung, Su-Young ; Kwak, Jin ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 709~716
DOI : 10.12673/jkoni.2012.16.4.709
Recently, smartgrid has interested in enable to existing electrical grid to supplying stably and efficient energy management. Smartgrid environment using PLC is transmit PLC module collected electricity consumption information in each house from PLC module to server. This communication process can occurred security threats such as personal information leak of consumer, electrical grid paralysis. In this paper, we propose efficient electricity consumption information transmission protocol with ID-based key distribution method for respond to security threats.
A Study on the Smart Disaster Management System for Social Network Service
Kang, Heau-Jo ;
The Journal of Advanced Navigation Technology, volume 16, issue 4, 2012, Pages 717~722
DOI : 10.12673/jkoni.2012.16.4.717
Disaster management system can prepare enough for a social disaster. In addition, it is measures to reduce damage. When, where and how to prepare for a disaster will happen we can not expect an appropriate sense of crisis, disaster response and is the right choice early. In this paper, the next national disaster safety sector effective use SNS will find ways. To do this successfully in the field of international disaster safety use cases and measures are derived that can be applied to our country. As a result, comprehensive and systematic introduction of disaster management system to minimize the damage will contribute effectively to the rapid disaster recovery.