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In-Vehicle Directional Audio Streaming

Aptiv Components India Pvt Ltd-Vijayalakshmi kr
Aptiv Components India Pvt, Ltd.-Anitha Loganathan
  • Technical Paper
  • 2019-28-2448
To be published on 2019-11-21 by SAE International in United States
In-Vehicle Infotainment has evolved greatly over years from a simple tuner based radio with a small LED display to a complex system with highly intelligent interactive HMI which can mirror the smart phone. The full-fledged entertainment features like watching videos are restricted to only rear passengers. In drive mode, drivers are limited with access to only audio to avoid driver distraction. Rear passengers and drivers are classified into different audio zones. Each of the rear passengers are equipped with headsets so that audio merging with driver zone can be avoided. This leads to passenger discomfort, as many passengers would not prefer to hook up with headset all the time. Now the automotive world is envisioned to reach fully autonomous mode where there is no driver and every passenger is interested to listen to music/video of diverse interest. The audio zones in autonomous car need not be zonified or linear. Circular audio zone can also be a good choice for autonomous cars. There are situations in autonomous cars where passenger is asleep in vehicle and hence…

How Miniaturized Distributed Modular Architecture Advances Avionics Design

  • Magazine Article
  • TBMG-34865
Published 2019-08-01 by Tech Briefs Media Group in United States

Most of today’s collision-avoidance, in-flight-entertainment (IFE), air-to-ground-communications, and other avionics systems employ electronics packaging based on the Aeronautics Radio INC (ARINC) 600 standard. Compared to the older ARINC 404 standard dating from the 1970s that defined “black box” enclosures and racks within aircraft, ARINC 600 specified a Modular Concept Unit (MCU) – the basic building block module for avionics. An ARINC 600 metal enclosure can hold up to 12 MCUs, allowing a lot of computing power to be placed in a centralized “box.” By making it possible to run numerous applications over a real-time network, ARINC 600 enabled “next generation” integrated modular avionics (IMA).

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How Miniaturized Distributed Modular Architecture Advances Avionics Design

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_01
Published 2019-08-01 by SAE International in United States

Most of today's collision-avoidance, in-flight-entertainment (IFE), air-to-ground-communications, and other avionics systems employ electronics packaging based on the Aeronautics Radio INC (ARINC) 600 standard. Compared to the older ARINC 404 standard dating from the 1970s that defined “black box” enclosures and racks within aircraft, ARINC 600 specified a Modular Concept Unit (MCU) - the basic building block module for avionics. An ARINC 600 metal enclosure can hold up to 12 MCUs, allowing a lot of computing power to be placed in a centralized “box.” By making it possible to run numerous applications over a real-time network, ARINC 600 enabled “next generation” integrated modular avionics (IMA).

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Critical Communications Break Out of the Analog Mold

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_05
Published 2019-08-01 by SAE International in United States

Military and public safety communications increase digital and data capabilities without sacrificing reliability or interoperability.

Once firmly rooted in its analog origins, critical communications is now steadily evolving to provide enhanced situational awareness. The latest public safety and military communications (MilCom) radios are more versatile and reliable, supporting ad-hoc networks to improve or enable connectivity. With higher-data-rate capabilities, critical communications solutions can send and receive high-resolution images, videos, and other types of data-intensive content. At the same time, they provide higher-quality voice communications while maintaining security. To ensure communications and interoperability, they still can support analog communications as a failsafe. These myriad capabilities are possible through the ongoing adoption of new technologies, ranging from digital public safety standards and modulation formats, to technologies like wireless local area networking (WLAN) and Long Term Evolution (LTE).

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Critical Communications Break Out of the Analog Mold

  • Magazine Article
  • TBMG-34876
Published 2019-08-01 by Tech Briefs Media Group in United States

Once firmly rooted in its analog origins, critical communications is now steadily evolving to provide enhanced situational awareness. The latest public safety and military communications (MilCom) radios are more versatile and reliable, supporting ad-hoc networks to improve or enable connectivity. With higher-data-rate capabilities, critical communications solutions can send and receive high-resolution images, videos, and other types of data-intensive content. At the same time, they provide higher-quality voice communications while maintaining security. To ensure communications and interoperability, they still can support analog communications as a failsafe. These myriad capabilities are possible through the ongoing adoption of new technologies, ranging from digital public safety standards and modulation formats, to technologies like wireless local area networking (WLAN) and Long Term Evolution (LTE).

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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. This document SHALL define the normative index values to be used, extending the CEN established list to provide phrases needed by US practitioners. This standard provides non-normative textual phrases which MAY be used by implementers to ensure intelligible results. This document SHALL follow the formats and rules established in SAE J2540 in the expressions, manipulations, and use of such tables. It should be pointed out that within the rules established by this document a variety of final table are all considered “compliant” with the document, and may vary as fits the needs of implementers.
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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.

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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.