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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 17, Issue 6 - Dec 2013
Volume 17, Issue 5 - Oct 2013
Volume 17, Issue 4 - Aug 2013
Volume 17, Issue 3 - Jun 2013
Volume 17, Issue 2 - Apr 2013
Volume 17, Issue 1 - Feb 2013
Selecting the target year
Establishing the Importance Institution for Prevention of Human Error
Moon, Woo-Choon ; Kim, Woong-Yi ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 377~385
DOI : 10.12673/jkoni.2013.17.4.377
Since the late 1950s, concerted efforts to reduce the accident rate in aviation have yielded unprecedented levels of safety. Although, the overall accident rate has declined considerably over the years, unfortunately reductions in human error-related accidents in aviation have failed to keep pace with the reduction of accidents due to environmental and mechanical factors. Today, a very large percentage of all aviation are attributable, directly or indirectly, to some form of human error. As a result of many study, a range of prevention of human error have been developed. but each of kind is lack of a precision, effectiveness and seem to be considered for aspect of deficiency as an systematic accessibility. So, we're going to analysis the most effective and systematic prevention of human error and study on consolidating method for human error and aviation safety. In this study, several alternatives for the prevention of human errors a priority to understand and solve problems by identifying the implications for human error to be presented.
Root-assisted MUSIC algorithm for the efficient DOA estimation in Multi-Jammer Environments
Lee, Ju Hyun ; Choi, Heon Ho ; Choi, Yun Sub ; Lim, Deok Won ; Park, Chansik ; Lee, Sang Jeong ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 386~395
DOI : 10.12673/jkoni.2013.17.4.386
This paper proposes a root-assisted MUSIC algorithm which uses a combination of the MUSIC and the root-MUSIC algorithm. This algorithm consists of two steps. Firstly, a coarse DOA is computed by the root-MUSIC algorithm. Secondly, a precise DOA estimation is carried out by the MUSIC algorithm in the reduced searching range. This paper analyzes the accuracy and the resolution performance of the proposed DOA estimation method using a software simulation platform.
Performance Estimation of Dual Frequency and Multi-Constellation Satellite Based Augmenation System for Korean Region
Yun, Ho ; Han, Deok-Hwa ; Kee, Chang-Don ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 396~403
DOI : 10.12673/jkoni.2013.17.4.396
Recently, GNSS users can utilize various navigation satellite thanks to GPS modernization, renewal of GLONASS, and development of Galileo and Beidou. And availability performance of users is expected to be improved because these new navigation satellites transmit L5 signal as well as L1 signal, and users can directly estimate the ionospheric delays. In accordance with these changes existing Satellite Based Augmentation System (SBAS) which considers only GPS L1 signal is being developed to support dual frequency and multi-constellation GNSS users. This paper describes the main features of dual-frequency, multi-constellation SBAS algorithms and estimates the performance in Korean region by simulation.
Study On Generating Compact Network RTK Corrections Considering Ambiguity Level Adjustment Among Reference Station Networks for Constructing Infrastructure of Land Vehicle
Song, June-Sol ; Park, Byung-Woon ; Kee, Chang-Don ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 404~412
DOI : 10.12673/jkoni.2013.17.4.404
Network RTK is widely used especially for static applications so far, however, the demand for high accuracy positioning for kinetic users such as land vehicles is growing for safety and convenience reasons. Kinematic users move along the roads and the network where they receive corrections can be changed. Compact Network RTK corrections should keep consistency while network change. In this paper, we introduced a method of generating Compact Network RTK corrections considering network ambiguity level adjustment by formulation of corrections. We verified the proposed method for reference station networks across whole country. We also generated Compact Network RTK corrections using simulation and real GPS data from reference stations in South Korea and evaluated performance of users. As a result, the discontinuity between corrections from two networks reduced to 0.25 cycle from several cycles. And user could achieve less than 8 cm (2DRMS) horizontal position accuracy continuously regardless of network change.
Effective Net Residual Dispersion Depending on Total Transmission Length in Optical Transmission Links with a Randomly Distributed RDPS
Lee, Seong-Real ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 413~420
DOI : 10.12673/jkoni.2013.17.4.413
The design rule depending on total transmission length is induced in the optical links with residual dispersion per span (RDPS) of the random distribution, which is adopted for implementing the flexible systems of wavelength division multiplexing (WDM) transmission with dispersion management (DM) and optical phase conjugation. DM parameters used for the analysis of the design rule are the effective net residual dispersion (NRD) and the effective launch power. It is confirmed that the flexible optical network configuration with the total transmission length lower than 1,000 km is possible, because the system performance difference between the randomly distribution and the uniform distribution of RDPS is small. And, in the optical links with the randomly distributed RDPS, the wide NRD can be applied for transmitting WDM channels of the relatively wide launch power.
A Study on the VoIP Security Countermeasure of SIP-based
Tae, Jang-Won ; Kwak, Jin-Suk ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 421~428
DOI : 10.12673/jkoni.2013.17.4.421
Voice over IP refers to technology that enables routing of voice conversations over the Internet or a TCP/IP network. VoIP communication costs cheaper than traditional analog phone. Phone calls can be made to anywhere / anyone: Both to VoIP numbers as well as people with normal phone numbers. VoIP protocol equipment available today follows the SIP standard. Older VoIP equipment though would follow H 323, MGCP, Megaco/H.248. A SIP server is the main component of an IP PBX, dealing with the setup of all SIP calls in the TCP/IP network. A SIP server is also referred to a Asterisk IP-PBX. A VoIP telephone, also known as a SIP phone or a softphone, allows the user to make phone calls to any softphone, mobile or PC by using App store. A VoIP telephone can be a simple software-based softphone. However, the SIP Server and the program is vulnerable to VoIP attacks. In this paper, eavesdropping attacks tested by using the Asterisk SIP server. Eavesdropping attacks and TLS security methods apply to VoIP system. TLS can be applied to determine whether the eavesdropping available for VoIP Environments.
Solution of TM Scattering by a Conductive Strip Grating Over the Grounded Two Dielectric Layers with Edge Boundary Condition
Yoon, Uei-Joong ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 429~434
DOI : 10.12673/jkoni.2013.17.4.429
In this paper, the TM (Transverse Magnetic) scattering problems by a perfectly conducting strip grating over a grounded two dielectric layers with edge boundary condition are analyzed by applying the FGMM (Fourier Galerkin Moment Method). For the TM scattering problem, the induced surface current density is expected to the very high value at both edges of the strip, then the induced surface current density on the conductive strip is expanded in a series of the multiplication of the Chebyshev polynomials of the first kind and the functions of appropriate edge boundary condition. Generally, when the value of the relative permittivity of dielectric layers over the ground plane increased, the strip width according to the sharp variation points of the reflected power is shifted to a higher value. The numerical results shown the fast convergent solution and good agreement compared to those of the existing papers.
A Predictive Connection Admission Control Using Neural Networks for Multiclass Cognitive Users Radio Networks
Lee, Jin-Yi ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 435~441
DOI : 10.12673/jkoni.2013.17.4.435
This paper proposes a neural net based-predictive connection admission control (CAC) scheme for multiclass users in wireless cognitive radio networks. We classifies cognitive users(cu) into real and non real time services, and then permit only real time services to reserve the demanded resource for spectrum handoff in guard channel for provisioning the desired QoS. Neural net is employed to predict primary user's arrival on time and demanded channels. Resource scheduling scheme is based on
(cognitive user I complete access) shown in this paper. For keeping primary users from interference, the CAC is performed on only cognitive user not primary user. Simulation results show that our schemes can guarantee the desired QoS by cognitive real time services.
A System for Supporting The Cyber Security Control of I＆C System
Jung, Hyun-Mi ; Kim, Seok-Hun ; Sung, Kyung ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 442~448
DOI : 10.12673/jkoni.2013.17.4.442
I&C (Instrumentation & Control) system is different from information system and the security design of the two systems are also different. The modeling activity is needed based on the security control guide in order to build I&C system security control. In this paper, the role and by the security control, we designed the relationship (that is, the relation schema) between the documents for 'The system for supporting the cyber security control of I&C system design' based on the security control guide. The designed schema plans 'The system for supporting the cyber security control of I&C system' for observing the security control guide, and is used as the database and content that supports its design and implementation. The process and system of the proposed schema is utilized and designed. The design of the schema and system is intensified in the design phase with the proposed mode and supporting the I&C system cyber security design.
The Impact of Acculturation Stress on Job Satisfaction - focus on Foreign Cabin Crew working in Korea Airlines -
Yoon, Sun-Young ;
The Journal of Advanced Navigation Technology, volume 17, issue 4, 2013, Pages 449~458
DOI : 10.12673/jkoni.2013.17.4.449
The purpose of this study is to find out Acculturation Stress that impact on job satisfaction focus on foreign cabin crew working in korea airline. the analysis showed the statistically significant meaning nationality had influence on acculturation stress. while working years had not influence on acculturation stress. also nationality and working years had not influence on job satisfaction In addition, acculturation stress had a negative influence on job satisfaction. Based on this study results, it required alternatives for job stress reducing as well as job accomplishment. and it is highly considered nationality differences and we should concentrate on effective system.