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Control Measures for Laser Safety in the Navigable Airspace

G10T Laser Safety Hazards Committee
  • Aerospace Standard
  • ARP5572A
  • Current
Published 2020-03-10 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) provides information and guidance for the control of hazardous laser energy in the navigable airspace. This ARP does not address techniqies that pilots can apply to mitigate laser illuminations during a critical phase of flight. Such mitigation strategies are described in ARP6378.
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Passive RFID Tags Intended for Airborne Equipment Use

G-18 Radio Frequency Identification (RFID) Aero Applications
  • Aerospace Standard
  • AS5678B
  • Current
Published 2020-02-05 by SAE International in United States
The scope of this document is to: 1 Provide a requirements document for RFID tag manufacturers to produce passive-only UHF RFID tags for the aerospace industry. 2 Identify the minimum performance requirements specific to the Passive UHF RFID Tag to be used on airborne equipment, to be accessed only during ground operations. 3 Specify the test requirements specific to Passive UHF RFID tags for airborne equipment use, in addition to EUROCAE ED-14 / RTCA DO-160 compliance requirements separately called out in this document. 4 Identify existing standards applicable to Passive UHF RFID Tag. 5 Provide a certification standard for RFID tags which will use permanently-affixed installation on airborne equipment.
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Wireless Movement-Tracking System Uses Low-Power Radio Frequency Signals

  • Magazine Article
  • TBMG-35987
Published 2020-02-01 by Tech Briefs Media Group in United States

A system called Marko uses signal reflections to provide scientists and caregivers with valuable insights into people's behavior and health. Marko transmits a low-power radio-frequency (RF) signal into an environment. The signal will return to the system with certain changes if it has bounced off a moving human. Novel algorithms then analyze those changed reflections and associate them with specific individuals. The system then traces each individual's movement around a digital floorplan. Matching these movement patterns with other data can provide insights about how people interact with each other and the environment.

90° Hybrid Coupled Power Amplifier – Pros and Cons

  • Magazine Article
  • TBMG-36067
Published 2020-02-01 by Tech Briefs Media Group in United States

Power Amplifiers (PAs) are commonplace in Radio Frequency (RF) systems extensively used in applications consisting of over-the-air wireless communications. Wireless communications is a broad market and PAs fill a wide array of those applications. Due to the broad range of applications, PA design techniques must be chosen carefully for each application-specific scenario.

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Design and Handling Guide Radio Frequency Absorptive Type Wire and Cables (Filter Line, AS85485)

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AIR4465A
  • Current
Published 2020-01-31 by SAE International in United States
This document presents design and application information which will allow optimized utilization of filter line wire and cable purchased to AS85485. Filter line wire is defined and design information is presented. The electrical and mechanical performance characteristics of the wire, along with recommended harnessing methods and techniques, are also presented.
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Upper Frequency Measurement Boundary for Evaluation of Shielding Effectiveness in Cylindrical Systems

AE-4 Electromagnetic Compatibility (EMC) Committee
  • Aerospace Standard
  • AIR1700A
  • Current
Published 2020-01-30 by SAE International in United States
This AIR points out that above a frequency called the “transition frequency,” variances associated with the shielding effectiveness measurements can become large. It includes the derivations to demonstrate this. This fact should be taken into account when designing shielding for use above the transition frequency.
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Performance Levels and Methods of Measurement of Electromagnetic Compatibility of Vehicles, Boats (up to 15 m), and Machines (16.6 Hz to 18 GHz)

Electromagnetic Compatibility (EMC) Standards
  • Ground Vehicle Standard
  • J551/1_202001
  • Current
Published 2020-01-10 by SAE International in United States
This SAE Standard covers the measurement of radio frequency radiated emissions and immunity. Each part details the requirements for a specific type of electromagnetic compatibility (EMC) test and the applicable frequency range of the test method. The methods are applicable to a vehicle, boat, machine or device powered by an internal combustion engine or battery powered electric motor. Operation of all engines or motors (main and auxiliary) of a vehicle, boat, machine or device is included. All equipment normally operating when the vehicle, boat, machine or device is in operation is included. Operator controlled equipment is included or excluded as specified in the individual document parts. As a special case, CISPR 12 applies to battery powered floor finishing equipment, but robot carpet sweepers are excluded. By reference, IEC CISPR 12 and CISPR 25 are adopted as the standards for the measurement of vehicle emissions. In the event that an amendment is made or a new edition is published, the new IEC document shall become part of this standard six months after the publication of the…
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Tire Pressure Monitoring Systems for Light Duty Highway Vehicles

Highway Tire Committee
  • Ground Vehicle Standard
  • J2657_201912
  • Current
Published 2019-12-10 by SAE International in United States
To establish overall performance guidelines, test methods, and minimum performance levels for a TPMS. The system shall visually indicate the tire inflation pressure status. These guidelines include, but are not limited to: a A test methodology for a device which monitors tire inflation, that is located in/on the tire/wheel environment. b Recommended performance guidelines for a TPMS.
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SDR Interface for the NeXtRAD Multistatic Radar System

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_06
Published 2019-12-01 by SAE International in United States

NeXtRAD is a dual-band, dual-polarization, multistatic radar system under development at the University of Cape Town (UCT) in col lab oration with University College London (UCL). The primary mission of the system is to collect multistatic data of small radar cross-section maritime targets embedded in sea clutter.

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Interface Standard, Airborne EO/IR Systems, Electrical

AS-1C Avionic Subsystems Committee
  • Aerospace Standard
  • AS6129A
  • Current
Published 2019-11-19 by SAE International in United States
This standard defines a generic set of electrical interfaces between a host aircraft (“platform”) and an electro-optic/infrared (EO/IR) sensor. This includes connectors, cabling, fiber optics, signals, and power.
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