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Social Infrastructure
Based on Radio Wave Technologies
Realizing the Future by Extension
of the Radio Wave Domain
UMEKAWA Eikichi
Toshiba's Activities in Radio
Wave Field
ADACHI Hideo / ANDO Yasuhiro
Toshiba has been contributing to society under the concept of constructing
efficient social infrastructure and a comfortable environment.
The scope of our activities in the radio wave field includes air
traffic control, disaster prevention, and emission surveillance.
In these activities, our aim is to accurately understand the situation
and promote solutions that will contribute to the further advancement
of society. Recently, various threats have arisen such as serious
transportation accidents and natural disasters (earthquakes, tsunami,
etc.). This paper introduces Toshiba's measures to deal
with such circumstances.
Integrated Tracking and Control
System for Stratospheric Platform
KATSUYAMA Yasuhiro / OHBA Yoichi
The stratospheric platform (abbreviated SPF) is a Japanese national
R&D project for the world's first stratospheric unmanned airship,
envisioned as a unique network node for communications, broadcasting,
and earth observation.
Since the inception of the project, Toshiba has been engaged in
the design and integration of the integrated tracking and control
system for the SPF. Our long experience in air traffic control
systems as well as satellite tracking, telemetry, and command systems
has assisted us in dealing with the unprecedented SPF realm.
This paper describes our approach to developing the integrated
SPF tracking and control system, mainly from the standpoint of
air safety precautions among many other technological and operational
challenges.
MEWS Subsystem for Stratospheric
Platform
MUTO Ryuichi / YUGE Nobuko / HORIKOMI Junichi
As the lead managing company, Toshiba is committed to the development
of the integrated tracking and control system for the stratospheric
platform (abbreviated SPF), a stratospheric unmanned airship being
built as a Japanese national project. The fragility of the airship
imposed stringent requirements on the system performance in terms
of the meteorological aspects, especially wind observation and
prediction.
This paper gives a concise overview of the "meteorological,
especially wind observation and prediction subsystem" (MEWS),
which integrates various weather sensors with a local-weather-forecast
model, focusing on how it has outperformed all of the system requirements.
It is our hope that this accomplishment will become a springboard
leading to further expansion of our solution business for greater
benefits to society.
Upgraded "Weather-plusTM" Weather
Information Service
MIZUTANI Fumihiko / KAWAHARA Satoru / WADA Masakazu / SUGAI
Hiroyuki
Weather information services have become increasingly important,
not only for the general public but also for companies and organizations
engaged in business activities that tend to be affected by weather
conditions.
Toshiba has been offering a weather information service called
Weather-plusTM since October 2003, which provides weather data
on a fine mesh with 5 km intervals.We have now completed an upgrade
of the system in terms of data precision and timeliness of dissemination
by introducing new algorithms employing real-time radar data as
additional information for analysis, and have announced the commencement
of upgraded services throughout Japan.
It is our hope that these services will be of help in developing
subscribers' business opportunities.
SSR Mode S Radar System for
Central Japan International Airport
KAJIO Hiroshi / HASHIDA Yoshio / INO Masami
Two types of radar systems are the key to air traffic control (ATC)
operations: air route surveillance radar (ARSR) and airport surveillance
radar (ASR).Mode S, the radar designation of an upgraded version
of a system called secondary surveillance radar (SSR), has been
introduced in ARSR systems since 2003 as the first step. As the
next step, it was introduced in an ASR system in January 2005 when
it was deployed at Central Japan International Airport, the first
deployment at a Japanese airport.
Toshiba delivered the Mode S radar system to Central Japan International
Airport and has obtained good results from a series of operational
field evaluation tests. We have therefore completed our lineup
of both types of Mode S radar systems by delivering them to both
ARSR and ASR systems.
Radar Data Processing System
for Air Traffic Control
TAGUCHI Jitsuo / YAMADA Tatsuro / AKAISHI Takatoshi
Recent data processing systems (DPS) are expected to flexibly meet
the demands for sophistication of functional requirements and diversification
of computer architectures. In response to this trend, Toshiba has
revamped its radar DPS (RDPS) for air traffic control in accordance
with today's advanced computer and software design practices. While
conventional RDPS used to incorporate centralized software processing
on a large central computer complex, we have developed a new model
of RDPS by applying our own methodology of software construction,
implementing the block-and-build approach to software engineering
on a distributed processing system so as to flexibly respond to
changes in computer hardware and/or operating systems.
These technology bases are expected to be applicable to the development
of similar DPS in the ever-evolving software engineering environment.
Geolocation Technique for
Sources of Satellite Communication and Broadcast Interference
KAMIMURA Yukihiro / NOZAWA Tatsuya
While the current expansion of satellite communication and broadcasting
services has brought about social benefits, at the same time it
has also created overcrowded orbits in space as well as congestion
of the radio wave spectrum. If a geostationary satellite were to
suffer a jamming intrusion into its uplink for whatever reason,
location of the jamming source would be necessary. However, this
is a technical challenge that is yet to be solved.
As an answer to this situation, this paper briefly introduces Toshiba's
in-house experimental research efforts to estimate the possible
location of a jamming transmitter by a novel scheme of signal processing
applied to the collected downlink signals. Our hope is that this
work will help to pave the way toward a new perspective of radio
wave administration in space.
Radio Source Visualizing
System
SHIMOMAKI Hirokazu / KAWANO Shuichi
With the rapid increase in radio stations as typified by the proliferation of
mobile phones, depletion of the radio wave spectrum is becoming a grave social
problem such that even a small number of unlicensed and unlawful radio stations
could endanger the radio wave users' community, causing mutual interference
or denial of service.
Toshiba has developed a radio source visualizing system whose display indicator
outputs a photo image with overlaid markings on the suspected areas of radio
wave emission, which can assist governmental radio wave administration. The
novel and inventive concept of this system permits its applicability to be readily
expanded to search-and-rescue operations, detection of eavesdropping, real-time
spotting of mobile phone users in a crowd, and so on. |
