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RDS Phrase Lists

V2X Core Technical Committee
  • Ground Vehicle Standard
  • J2540/1_201906
  • Current
Published 2019-06-11 by SAE International in United States

This SAE Standard provides a table of textual messages meeting the requirements for expressing "Radio Data Systems" (RDS) phrases commonly used in the ITS industry. They can be used both over the RDS subcarrier transmission media as part of a 37-bit long "Group 8a message" as well as being used to provide a common content list of phrases used in a wide number of other media and applications.

 
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Algorithm Predicts How Electromagnetic Waves Interact with Materials at the Smallest Scales

  • Magazine Article
  • TBMG-34614
Published 2019-06-01 by Tech Briefs Media Group in United States

Magnetic materials can attract or repel each other based on their polar orientation — positive and negative ends attract each other, while two positives or two negatives repel. When an electromagnetic signal like a radio wave passes through such materials, a magnetic material acts like a gatekeeper, letting in the signals that are desired but keeping out others. They can also amplify the signal or dampen the speed and strength of the signals.

 

A Three-Dimensional Inverted-F Antenna as a LTE Antenna in a Rooftop Antenna Module

TE Connectivity-Jane X. Yun
Published 2019-04-02 by SAE International in United States
The demand for wireless connectivity of vehicles is growing rapidly. Today, a typical modern vehicle may have more than 10 antennas to provide wireless services. Some of these antennas can be mounted on the rooftop of the vehicle to access to an open field of view from the horizon to the sky. A rooftop antenna module integrates several antenna elements into one package for different services, such as broadcast radio, satellite digital audio radio service (SDARS), global navigation satellite system (GNSS), long-term evolution (LTE), Wi-Fi, Car-2-Car communications, etc.However, the rooftop location limits the allowable size and the shape of the antenna module, because these features must have acceptable minimal impacts on the aerodynamic performance of a vehicle. This size limitation brings challenges to the designs of the antenna elements packaged in the same antenna module. Besides meeting each antenna’s performance requirements, an important design goal is to minimize the mutual couplings between the antenna elements. A known challenge is to minimize the impacts from other antenna elements to the SDARS antenna in the rooftop antenna…
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An Integrated Framework for Complex Radar System Design

Aerospace & Defense Technology: April 2019

  • Magazine Article
  • 19AERP04_01
Published 2019-04-01 by SAE International in United States

Modern radar systems are complex and depend heavily on advanced signal processing algorithms to improve their detection performance. At the same time, the radio front-end must meet challenging specifications with a combination of available components, implementation technologies, regulatory constraints, requirements from the system, and signal processing. This application example shows how NI's Visual System Simulator™ (VSS) system simulation software enables radar system architects and RF component manufacturers to design, validate, and prototype a radar system.

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Quantum Radio Aids Communications and Mapping

  • Magazine Article
  • TBMG-34164
Published 2019-04-01 by Tech Briefs Media Group in United States

GPS signals do not penetrate very deeply or at all in water, soil, or building walls, and therefore can’t be used by submarines or in underground activities such as surveying mines. GPS also may not work well indoors or even outdoors among city skyscrapers. For soldiers, radio signals may be blocked in environments cluttered by rubble or many interfering electromagnetic devices during military or disaster recovery missions.

 

Signal Combiner for Wideband Communication

  • Magazine Article
  • TBMG-34168
Published 2019-04-01 by Tech Briefs Media Group in United States

NASA’s Glenn Research Center has devised an efficient new method of combining primary and secondary signals with minimal loss and noise. With its ability to reduce system noise, this novel signal combiner delivers the best opportunity to receive a desired signal not easily distinguished from background noise.

 

An Integrated Framework for Complex Radar System Design

  • Magazine Article
  • TBMG-34122
Published 2019-04-01 by Tech Briefs Media Group in United States

Modern radar systems are complex and depend heavily on advanced signal processing algorithms to improve their detection performance. At the same time, the radio front-end must meet challenging specifications with a combination of available components, implementation technologies, regulatory constraints, requirements from the system, and signal processing. This application example shows how NI's Visual System Simulator™ (VSS) system simulation software enables radar system architects and RF component manufacturers to design, validate, and prototype a radar system.

 

Challenges in Ultra-Wide Band Worldwide Radio Homologation

Hella India Automotive Pvt. Ltd. Pune-Ameya Gambhir, Srushti Ethape, Agnetta Rebello
Published 2019-01-09 by SAE International in United States
Ultra-Wide Band has found increasing use case in Indoor and Outdoor location tracking systems. An interesting application of UWB lies in preventing vehicle thefts that use relay attacks on conventional passive entry passive start electronic systems. Due to very large bandwidth ranging from 3 GHz to 10 GHz in case of UWB, the worldwide radio homologation authorities are challenged to come out with appropriate test and approval processes to limit the growing interference and ensure unified and compatible systems throughout the globe. Having worked on global RF regulatory approval processes for over five years in Short Range Devices (SRD) namely for Car Access and Passive Entry (CAPE) products, the authors have gained important insights about the peculiar needs of the industry, regulatory bodies and test laboratories. The paper discusses challenges faced by the authors while working with global and national regulatory agencies of multiple countries in terms of available standard, test infrastructure, interpretation of regulations, validity of homologation certificates in a way to guide new Tier-1 suppliers as well as OEMs. The viewpoint is that…
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Ricocheting Radio Waves Monitor the Tiniest Movements

  • Magazine Article
  • TBMG-33613
Published 2019-01-01 by Tech Briefs Media Group in United States

Infrared motion detectors can cover only a limited amount of space, a person has to be within the detector's line of sight to be detected, and lights can go off when a person remains still for too long. Work has demonstrated that patterns made by radio waves can detect a person's presence and location anywhere inside a room. A new motion sensor based on metamaterials is sensitive enough to monitor a person's breathing.

 

5 Ws of Spray-On Antennas

  • Magazine Article
  • TBMG-33401
Published 2018-12-01 by Tech Briefs Media Group in United States

Manufacturers and users of wearables, functional fabrics, mobile devices, wireless routers, and Internet of Things devices.