JRC REVIEW No.67 Technical Reports

- Special Issues : On Marine Electronics Business-

The marine radar has been applied the latest technology, and the technology has been changed with the times. JRC is always ingenious in order to efficiently build an extensive product line-up by each technology, and has been efforts to improve the detection performance and display visibility dictate the commercial value of the marine radar. In addition we have succeeded in technical development of the transmitter to respond to the enforcement of stricter spurious regulations aimed at effective use of the radio frequency, and have succeeded development of new solid state marine radar. The modern marine radar is not only used for target detection for collision avoidance, but for application use in such a wave analysis, and is expected to future development.

Hideki Hashimoto

- Special Issues : On Marine Electronics Business-

Inmarsat is going to operate the Fleet Xpress (FX) system, which offers more high-speed broadband communication than the current maritime satellite communication system and is expected to improve the communication quality and reliability under maritime environment drastically, from the third quarter of 2015. JRC has developed the Global Xpress (GX) maritime satellite communication terminal JUE-60GX which is one of the compositions in FX system, and is operated via "Ka-band" satellite (Inmarsat fifth generation satellite). This report introduces GX system's outline and JUE-60GX's composition, the basic specification and the feature. In addition, this report introduces the elemental technology which is obtained by JRC's knowledge, in order to satisfy to the severe technical specification which is required to the communication equipment for Ka-band's satellite radio frequency.

Shintaro Inoue
Minoru Akatsuka
Nobuyuki Ito
Takanori Noro
Toshiyuki Maeda

- Special Issues : On Marine Electronics Business-

The marine radar JMA-1030 series has developed by JRC is marine radar which has adopted touch operation of the first in JRC with including some ideas of the display user interface to provide the most important "intuitive and easy to understand operation" for the first time marine radar user. On operability, as compared to conventional JRC radars has remarkably improved and corresponded to standard 11 languages in terms of the operability improvement. And this product has achieved both improved productivity and reliability by integrating the microwave related components and the chassis of scanner unit. Furthermore, this product has realized to be equivalent to marine radar performance of short range detection for ships while being for boats

Tomoyasu Ito

- Special Issues : On Marine Electronics Business-

The solid state radar introduced in this report mainly has advantages of "long life","maintenance cost reduction",and "target detection performance enhancement in a clatter" compared with the magnetron radar. The solid state radar which JRC has developed this time consists of two units which connected MFD (Multi Function Display) as a display unit to the antenna. And the mass has satisfied the weight saving reduced about 50% compared with a conventional model (12-ft model) by the antenna reduced it in size and weight and by the high integration of each circuit, etc. Since LD-MOS FET is adopted as a transceiver circuit, it has ten years or more of life. Moreover, the wide dynamic range of the system has improved in detection performance as compared with the conventional equipment with respect to the performance.

Daisuke Wakamiya
Masaru Kawaguchi

- Special Issues : On Marine Electronics Business-

International Maritime Organization (IMO) has released new performance standard for Integrated Navigation System (INS), the purpose of the standard is to enhance the safety of navigation by relieving work load concerning operating equipment in bridge by providing integrated functions and information. JRC has developed new RADAR Model JMR-9200 series and new ECDIS Model JAN-9201 series, and these equipment are available for upgrading to Multi Function Display  (MFD) which complies with the requirement of INS performance standard. JRC INS provides following features: easy operation of task switching, automatic synchronization of system settings, increasing reliability by redundant system design, displaying of system status, and capability for system upgrading.

Shigeyuki Asami
Yasuo Kurata
Yoshiyuki Kamei
Naoki Yokoyama
Tomohiro Nakamura

- Special Issues : On Marine Electronics Business-

The new RMS (Remote Maintenance System) has a feature of uploading maintenance information of equipment adopting RMS function to the land station by using Inmarsat GX or VSAT satellite communication. In addition, the RMS has a lot of valuable features such as standardization of self-diagnosis and maintenance information output function, IP packet communication, wiring cable reduction by using LAN, etc. By improving fundamental RMS function ("Monitoring","update" and "control") greatly, new RMS enhanced the contribution to navigation plan maintenance and safety voyage.

Akihisa Shimozumi
Takafumi Takada
Tsutomu Hazumi
Atsunobu Nakazawa
Tomomichi Ikeyama
Osamu Masubuchi

- Special Issues : On Marine Electronics Business-

The new Multi Function Display (hereafter called MFD) which this report introduced realized the integration of the main navigation support function of RADAR, ECDIS, conning display and AMS by the commonization of hardware and software. Moreover, based on JRC’s original RADAR signal processing technology and a core software technology of electronic chart display, the RADAR image display and the electronic chart display were enabled. This equipment has many features, such as "high flexibility of the installation by large miniaturization", "the improvement of each function of RADAR, ECDIS, conning display and AMS", and "the improvement in user interface function".

Hidetaka Matsuyama
Takeshi Mizoguchi
Hideki Mino
Yoshiyuki Kamei
Norio Kakoi

- Special Issues : On Marine Electronics Business-

The VDR (Voyage Data Recorder) JCY-1900 has many valuable features such as adding the data recording medium, extension of the data recording period, simplified installation and cost reduction by wire saving, enhancement of network management function and improvement of the operation panel unit. In addition, we have developed new application software (playback/real time monitoring) to utilize the recorded data for the marine accident investigation, etc. Furthermore, by extension of remote maintenance function, permanent satellite communication services via Inmarsat-GX or VSAT becomes available.

Ryoichi Uchijima
Naoki Yamada
Satoru Toyama
Akihisa Shimozumi
Osamu Masubuchi

- Technical papers -

LTE has been expanding utilization as global standard broadband wireless technology, and still continuously evolving toward the next generation communication infrastructure. JRC has developed LTE base station, core network-subscriber access control, billing and network management systems. JRC provides not only End-to-End system equipments that have features of compact, scalability and simple operation, and also provides application, RF planning and system integration as total solution, which allows operators to startup their business quickly and reduce both initial and operational costs. This report describes general LTE technology

Katsuhiko Sato
Sadayuki Katsumata
Toru Tange
Yusuke Egawa
Takayoshi Sasaki

- Special Issues : On Marine Electronics Business-

JRC has developed small, low power consumption, and outdoor installable LTE eNodeB (Evolved Node B) ,which provides fast and simple LTE system building and operation and also contributes minimized CAPEX and OPEX for small and midlle class (Tier 2 and 3) operators. The eNodeB complies 3GPP LTE release 9, and supports 5MHz, 10MHz, 15MHz, and 20MHz bandwidth and both TDD and FDD duplex mode. The eNodeB enables operators to deploy LTE system flexibly by customizing RF circuit only for customer's requirement such as LTE band class.

Sadayuki Katsumata
Kenji Terada
Yasushi Tabei
Satoshi Maeda

- Special Issues : On Marine Electronics Business-

JRC has developed LTE Core Network System which consist of 2 major devices of both EPC (Evolved Packet Core) device and LTE Network Management System called EMS (Element Management System) ,in order to realize Compact LTE system for small and middle class communication operators. EPC supports standards features and interfaces comply with 3GPP LTE Release 9 in one box, and is installable on universal OS (operating system) and general hardware platform such as ATCA (Advanced Telecommunications Computing Architecture) server. Also, JRC EPC offers easy to operate GUI to enable easy configuration, for fast operation. Therefore JRC’ s EPC enables to fast entry of new LTE networks with minimum CAPEX/OPEX. EMS enables total management of installation, configuration, operation, and maintenance for LTE network devices such as eNodeB (Evolved Node B) ,EPC, and other network elements.

Sadayuki Katsumata
Toru Tange
Kunimitsu Arai
Takeo Kimura
Masatoshi Nakano

- Special Issues : On Marine Electronics Business-

Radar interference will be a critical problem against marine radars in the future when solid-state radars have replaced conventional magnetron radars. Particularly, in an important marine trade route, interferences from hundreds of solid-state radars will overlap so heavily that the conventional interference rejection processing performs inadequately. For countermeasures against such tough interference circumstances, JRC has researched and developed a novel radar manipulating the interference rejection algorithm optimized for the circumstances, as well as suppressing interference with an electronic scanning antenna. The optimized algorithm is the combination of plural interference rejection functions selected in accordance with the database of variation of interference examples. With the novel techniques built in, JRC has developed a knowledge-based interference rejection radar; consequently, through pseudo-interference evaluations

Yukinobu Tokieda
Masayuki Sugano
Yoichi Tomiki
Hiroki Sugawara

- Special Issues : On Marine Electronics Business-

J-Marine Cloud is the general term for the total services that are intended for the safe and secure smart navigation management by providing a greater variety of contents.
J-Marine Cloud supports the improvement and solution of various problems with navigation and ship operations including energy-saving navigation and environmental measures, anti-piracy measures, proper support from shore of ship operations.
J-Marine Cloud functions as a common platform to collect various types of information and provide a diversity of contents.

Keiichi Nakashima