Imaging

Co-Prime Frequency and Aperture Design for HF Surveillance, Wideband Radar Imaging, and Nonstationary Array Processing

A co-prime array uses two uniform linear subarrays to construct an effective difference coarray with certain desirable characteristics, such as a high number of degrees-of-freedom for DOA estimation. In this research, the co-prime array concept has been generalized with two operations.

Posted in: Briefs, Aeronautics, Aerospace, Aviation, Defense, Electronic Components, Electronics, Electronics & Computers, Power Management, Imaging, Manufacturing & Prototyping, MEMs, Optical Components, Optics, Power, Antennas, RF & Microwave Electronics, Sensors
Read More >>

Digital Radar Warning Receiver

Northrop Grumman Corporation
Falls Church, VA
703-280-2900
www.northropgrumman.com

Northrop Grumman Corporation recently received a $124.7 million award for production of AN/APR-39D(V)2 digital radar warning receiver and electronic warfare management systems. The award followed the successful completion of engineering and manufacturing development activities, including a series of rigorous tests that verified the system's readiness for production and the demands of combat operations.

Posted in: Application Briefs, Aerospace, Aviation, Defense, Electronics & Computers, Displays/Monitors/HMIs, Imaging, Antennas, RF & Microwave Electronics, Detectors, Sensors
Read More >>

Robotic Applique Kits Leverage Existing Assets

When it comes to modern military operations, robotic technology provides a tremendous tactical advantage. Drones, ground robots and autonomous vehicles are routinely used for missions such as intelligence-gathering, surveillance and reconnaissance (ISR), allowing military personnel to conduct operations from a safe distance. And yet, despite these technological advances, the vast majority of vehicles in use by the military — whether in the air or on land — still require a human operator.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Data Acquisition, Cameras, Imaging, Machinery, Robotics, Data Acquisition, Sensors
Read More >>

Development of a Vision-Based Situational Awareness Capability for Unmanned Surface Vessels

Using unmanned surface vessels (USVs) for “dull, dirty and dangerous missions” is gaining traction in recent years as it removes the human element from a potentially life-threatening environment in missions such as mine hunting or maritime interdiction. Current USVs rely on human operators sitting in remote control stations to monitor the vessels’ surroundings and perform collision detection and avoidance. This reliance on the human operator constrains the operating envelope of the USV as it requires a high bandwidth and low latency communication link for safe operations, especially in waters with heavy traffic.

Posted in: Briefs, Aerospace, Defense, Imaging, Machine Vision, Video, Automation, Robotics, Simulation Software, Transportation
Read More >>

Educating UGVs

Advancements in the field of artificial intelligence (AI) are accelerating as the technology matures from being research-orientated to being deployed in a wide range of products and services, such as autonomous vehicles. While Convolutional Neural Networks (CNNs) were first described in the 1950s, the technology remained an academic concept until the availability of large training data sets and powerful Graphics Processor Units (GPUs), a processor architecture ideal for the heavy math computational demands associated with neural network processing. Once scientists had low-cost and high-performance platforms, the technology exploded for many commercial uses. Military use is more challenging due to the lack of large data sets, but that is changing too as areas including thermal imagery are starting to be used.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Data Acquisition, Computers, Electronics & Computers, PCs/Portable Computers, Thermal Management, Imaging, Machine Vision, Visualization Software, Machinery, Data Acquisition
Read More >>

Extended-Range Loitering System

UVision Air Ltd
Zur Igal, Israel
+972 9 749 6823
www.uvisionuav.com

UVision Air Ltd. — a company that specializes in lethal aerial loitering systems of all sizes — has successfully demonstrated the Hero-400EC extended-range loitering system for a strategic customer. The demonstration, which took place in southern Israel late last year, proved the tracking and lock-on capabilities of the system using a moving vehicle and a human target in various operational scenarios as well as its mission-abort capabilities. The ability to strike a target with exceptional precision was also demonstrated.

Posted in: Application Briefs, Aeronautics, Aviation, Defense, Imaging
Read More >>

Rugged Server and Display System

General Micro Systems
Rancho Cucamonga, CA
(800) 307-4863
www.gms4sbc.com

General Micro Systems Inc. (GMS) recently announced that the U.S. Army will exclusively deploy powerful rugged server and display systems from GMS to run the multifunction video display (MVD) software within Type II medium mine protection vehicles (MMPV). The GMS system comprises four components – two chassis and two displays. It also includes an enterprise-class, ultra-rugged, secure server with an intelligent 12-port 1/10 Gigabit Ethernet switch, a router, mass-media storage, CITV/DVR, video-over-IP, and two ultra-thin, rugged smart-panel PCs. When coupled with a video encoder, the system is a complete full motion video and control system with storage.

Posted in: Application Briefs, Defense, Electronics & Computers, PCs/Portable Computers, Cameras, Displays/Monitors/HMIs, Imaging, Sensors, Software
Read More >>

Control Platform Toolkit

Charles River Analytics
Cambridge, MA
(617) 491-3474
www.cra.com

Charles River Analytics Inc., a developer of intelligent systems solutions, recently partnered with Sensics, Inc., creators of the OSVR software stack; Technology, Modeling & Simulation, and Training Consultants (TMST), who provide consulting expertise across the spectrum of live, virtual and constructive training of emerging technologies; and the Virtual Reality Medical Center (VRMC), which provides virtual reality exposure therapy. Together, the team designed and developed the VIRTUOSO interface for the US Army Research Laboratory. VIRTUOSO supports natural human interactions in mixed reality/virtual reality/augmented reality (MR/VR/AR) environments.

Posted in: Application Briefs, Defense, Electronics & Computers, Displays/Monitors/HMIs, Imaging
Read More >>

Designing for Compressive Sensing: Compressive Art, Camouflage, Fonts, and Quick Response Codes

Compressive sensing (CS) is a relatively new field that has caused a lot of excitement in the signal processing community. It has superseded Shannon's time-honored sampling theorem, which states that the sampling rate of a signal must be at least twice its highest frequency. In CS, the necessary sampling rate depends on the sparsity of signal, not its highest frequency, reducing sampling requirements for many signals that exhibit natural sparsity. This compression happens on the hardware level, allowing systems to be designed with benefits ranging from increased resolution and frame rates to decreased power consumption and memory usage. Despite this enthusiasm for CS and the large quantity of research being performed, the number of commercial systems that use CS is relatively few. The problem of designing a CS strategy that increases functionality while actually reducing overall system cost has not been solved in many areas. This is a developing field where not only are new applications for CS still being developed, but also fundamental aspects of CS theory are still evolving.

Posted in: Briefs, Aerospace, Defense, Electronic Components, Electronics, Electronics & Computers, Energy, Energy Efficiency, Imaging, Fiber Optics, Optical Components, Optics, Data Acquisition, Sensors
Read More >>

Communications in Space: A Deep Subject

Transmitting and receiving radio signals between spacecraft in deep space is a snap compared with getting those signals back to Earth, especially when the spacecraft is 120 billion miles away.

Posted in: Articles, Aerospace, Communications, Electronics & Computers, Imaging, Optics, Photonics, RF & Microwave Electronics
Read More >>