Airborne Antenna Considerations for C-Band Telemetry Systems

It is fairly well known within the aerospace community that telemetry is moving from the traditional L-band and S-band frequency ranges up to C-band. It is widely understood that the reason for this push to C-band is two-fold. First, traditional L and S frequency bands have been greatly reduced through reallocation for a variety of reasons by different markets, and second, the bandwidth required for most applications has seen exponential growth. This has not only been seen in military applications, but in civilian aerospace platforms as well.

Posted in: Articles, Aerospace, Defense, Antennas, Telecommunications

Software-Designed System Improves Wireless Test Speed and Coverage

As wireless standards become more complex, the number of operational modes for these devices increases exponentially. As progression continues to the latest WiFi standard, new modulation schemes, more channels, more bandwidth settings, and additional spatial streams are added. Additionally, characterizing WLAN transceivers is especially challenging when faced with thousands of independent operational gain settings.

Posted in: Application Briefs, Aerospace, Defense, Design processes

Fully Autonomous Unmanned Vehicles

Lockheed Martin
Bethesda, MD

Lockheed Martin, in collaboration with the U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC), successfully conducted a fully autonomous resupply, reconnaissance, surveillance and target-acquisition demonstration using its Squad Mission Support System (SMSS) unmanned ground vehicle, K-MAX unmanned helicopter and Gyrocam optical sensor.

Posted in: Application Briefs, Aerospace, Defense, Unmanned aerial vehicles

Unmanned Demonstrator Flight Control Systems

North Atlantic Industries
Bohemia, NY

North Atlantic Industries (NAI) has been chosen by Lockheed Martin Skunk Works® to provide navigation system solutions for the Aerial Reconfigurable Embedded System (ARES) vertical takeoff and landing (VTOL) demonstrator. Vehicle management computer (VMC) and actuator interface unit (AIU) requirements were met utilizing NAI’s commercial-off-the-shelf (COTS) SIU6 chassis.

Posted in: Application Briefs, Aerospace, Defense, Flight control systems, Unmanned aerial vehicles

Autonomous Black Hawk Helicopter

Sikorsky Aircraft Corporation
Stratford, CT

Sikorsky Aircraft, a subsidiary of United Technologies Corp., is developing its first product to feature Matrix™ Technology by converting a retired UH-60A Black Hawk helicopter into an optionally piloted variant capable of a wide spectrum of missions. With the autonomous Black Hawk, Sikorsky plans to build on the success of its Matrix Technology and Manned/Unmanned Resupply Aerial Lifter (MURAL) autonomy programs to deliver a new level of mission flexibility to combat and logistic planners. The product will integrate autonomy and advanced fleet management technology with refurbishment experience to provide a cost-effective, dependable and sustainable system.

Posted in: Application Briefs, Aerospace, Defense, Autonomous vehicles, Rotary-wing aircraft

SRW Radio System

Thales Defense & Security
Clarksburg, MD

Thales Defense & Security, Inc. has been awarded an Indefinite Delivery/Indefinite Quantity (IDIQ) contract by the U.S. Army for its Soldier Radio Waveform Appliqué (SRW A) radio system: the AN/VRC 121 Vehicle Integrated Power Enhanced Rifleman, or VIPER.

Posted in: Application Briefs, Aerospace, Defense, Radio equipment

Developing and Validating Statistical Cyber Defenses

Enterprise business processes are more connected than ever before, driven by the ability to share the right information with the right partners at the right time. While this interconnectedness and situational awareness is crucial to success, it also opens the possibility for misuse of the same capabilities by sophisticated adversaries to spread attacks and corrupt critical, sensitive information. This is particularly true for an insider threat scenario in which adversaries have legitimate access to some resources and unauthorized access to other resources that is not directly controlled by a fine-grained policy.

Posted in: Briefs, Aerospace, Defense, Electronics & Computers, Information Technology, Statistical analysis, Collaboration and partnering, Cyber security, Data acquisition

Next-Generation Spectrometers for Rapid Analysis of Complex Mixtures

Molecules have internal motions that are characteristic of their structure and identity. These motions can be studied by spectroscopy in different regions of the electromagnetic spectrum. Molecular spectra can be used as a “fingerprint” to unambiguously state whether or not a particular chemical is present and in what amount. As such, small portable spectrometers are frequently used as components of chemical sensors.

Posted in: Briefs, Aerospace, Defense, Physical Sciences, Sensors and actuators, Medical, health, and wellness, Chemicals, Hazardous materials, Test equipment and instrumentation

Wireless Vital Signs Monitor for Trauma Patients

A miniature, portable wireless vital signs monitor (MWVSM), called Mini-medic™, could aid in the triage and diagnosis of trauma patients with and without traumatic brain injury (TBI). The MWVSM consists of two components, both of which are the approximate size and weight of a cellphone: one is a sensor that is placed either on the forehead or the fingertip of a patient, and the other is a monitor that receives a wireless signal transmitted up to 100 m carried by the medic.

Posted in: Briefs, Aerospace, Defense, Medical, Sensors and actuators, Medical, health, and wellness, Head injuries

Analysis of an In-Ear Dosimeter for a Single Hearing Protection Device

US national and many international hearing conservation programs (HCPs) have adopted a noise exposure criterion of 85 dBA for a time-weighted average of 8 hours, with a 3 dB per doubling exchange rate (safe exposure duration was cut in half for each 3 dB increase in noise level). Military personnel who work in extreme noise environments require high attenuation from hearing protection in order to complete a normal duty day without risk of permanent hearing loss. Improvements to both hearing protection and noise dose monitoring have been consistently recommended and pursued as a means to reduce risk for noise-induced hearing loss.

Posted in: Briefs, Aerospace, Defense, Physical Sciences, Noise, Noise measurement, Protective equipment