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Big Data, Aircraft, and a Better Future

Aircraft manufacturers are exploiting the opportunities that come with collecting the vast amount of data available, from customer reports to engine exhaust temperatures. Why is it potentially so useful? What are some of the best ways to use it? The hype phrase today is “Big Data.” It is a phrase Mark Bünger, Research Director for Lux Research, believes can have a number of definitions depending on who is doing the defining. Bünger was the lead analyst on a report that Lux published in April 2015 that surveyed both the technology as it is today and how various industries are adapting to the opportunities—and perils—in trying to exploit it.

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Optical Profiler

Zygo Corporation (Middlefield, CT) has introduced the ZeGage™ Plus optical profiler, a full-featured instrument for the 3D measurement of surface topography and roughness. The ZeGage Plus utilizes ZYGO’s proprietary Mx™ software, for enhanced data visualization and quantification of step heights, texture, and volumetric applications. ZeGage Plus profilers with optional automated XY sample stages have the added ability to combine overlapping measurements for the characterization of larger areas. Many of ZYGO’s extensive list of parfocal objectives can be used with ZeGage Plus profilers, from 1.4X to 50X, as well as 1X to 10X long working distance, and a 5X super- long working distance lens.

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Laser Modules

LASER COMPONENTS‘(Bedford, NH) FLEXPOINT® laser module series now includes dot and line lasers with 488 nm, in addition to 405 nm and 450 nm wavelengths in the blue spectral range. Depending on the beam profile, the output power amounts to up to 40 mW. Due to the narrow-banded emission of 488 nm ±2 nm, these laser modules are optimally suited for fluorescence applications, spectroscopic applications, and particle measurements. Further applications include biomedical and medical technology.

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VCSEL-Based Miniature Line Generator

Princeton Optronics Inc. (Mercerville, NJ) has introduced a VCSEL-based miniature line generator. The wavelength of the line generator is in the 820- 840nm range, has a 20mW CW power output, a fan angle of 80 degrees, line uniformity of 75-85%, a 1/e2 linewidth of 2.5mm at a distance of 50 cm. The size of the line generator is 4x6x5mm. Such products can be made using Princeton Optronics VCSELs at wavelengths from red to 1064nm, with output power up to several hundred mW. The line generators are used in applications such as machine vision, consumer electronics and instrumentation.

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Spectrum Analyzer Fundamentals – Theory and Operation of Modern Spectrum Analyzers

This primer examines the theory of state-of-the-art spectrum analysis and describes how modern spectrum analyzers are designed and how they work. That is followed by a brief characterization of today's signal generators, which are needed as a stimulus when performing amplifier measurements.

Posted in: White Papers, White Papers

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Receiver requirements for a TDOA-based radiolocation system

Emitter location based on measuring the time difference of arrival (TDOA) at multiple receiver sites has been available for several decades. In the past, the greatest challenge lay in time-synchronizing the various spatially separated receiver sites. Extremely complex methods were needed to precisely synchronize multiple receivers. Without adequate synchronization, the results of this location method are unusable because even small synchronization errors lead to significant errors in emitter location. For example, when using a single sensor, an error of 100 ns in measured time means an error of 30 m in the estimated distance. When using multiple sensors, the errors are additive and lead to unusable location results.

Posted in: White Papers, White Papers

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Introduction into Theory of Direction Finding

Applications of direction finding While direction finding for navigation purposes (referred to as cooperative direction finding) is becoming less important due to the availability of satellite navigation systems, there is a growing requirement for determining the location of emitters as the mobility of communications equipment increases:

Posted in: White Papers, White Papers

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