The High Altitude/ Re-Entry Vehicle Infrared Imaging (HARVII) system is a portable instrumentation system for tracking and thermal imaging of a possibly distant and moving object. The HARVII...

An improved readout scheme has been proposed for high-resolution thermometers, (HRTs) based on the use of superconducting quantum interference devices (SQUIDs) to measure temperature-...

A method of computing channel capacities and error rates in multipulse pulse-position modulation (multipulse PPM) has been developed. The method makes it possible, when designing an...

An alternative method of adaptive selection of Golomb power-of-two (GPO2) codes has been devised for use in efficient, lossless encoding of sequences of non-negative integers from...

Briefs: Electronics & Computers
VCO PLL Frequency Synthesizers for Spacecraft Transponders

Two documents discuss a breadboard version of advanced transponders that, when fully developed, would be installed on future spacecraft to fly in deep space. These transponders will be required to be capable of operation on any deepspace- communications uplink frequency channel between...

Briefs: Electronics & Computers
Wide Tuning Capability for Spacecraft Transponders

A document presents additional information on the means of implementing a capability for wide tuning of microwave receiver and transmitter frequencies in the development reported in the immediately preceding article, "VCO PLL Frequency Synthesizers for Spacecraft Transponders" (NPO-42909). The...

Briefs: Mechanical & Fluid Systems
Adaptive Deadband Synchronization for a Spacecraft Formation

A paper discusses general problems in estimation and control of the states (positions, attitudes, and velocities) of spacecraft flying in formation, then addresses the particular formation-flying-control problem of synchronization of deadbands. The paper presents a...

Briefs: Information Technology
Analysis of Performance of Stereoscopic Vision Software

A team of JPL researchers has analyzed stereoscopic vision software and produced a document describing its performance. This software is of the type used in maneuvering exploratory robotic vehicles on Martian terrain. The software in question utilizes correlations between portions of the...

Briefs: Information Technology
Estimating the Inertia Matrix of a Spacecraft

A paper presents a method of utilizing some flight data, aboard a spacecraft that includes reaction wheels for attitude control, to estimate the inertia matrix of the spacecraft. The required data are digitized samples of (1) the spacecraft attitude in an inertial reference frame as measured, for...

Briefs: Mechanical & Fluid Systems
Increasing the Life of a Xenon-Ion Spacecraft Thruster

A short document summarizes the redesign of a xenon-ion spacecraft thruster to increase its operational lifetime beyond a limit heretofore imposed by nonuniform ion-impact erosion of an accelerator electrode grid. A peak in the ion current density on the centerline of the thruster causes...

Briefs: Information Technology
Spatial Coverage Planning for Exploration Robots

A report discusses an algorithm for an onboard planning and execution technology to support the exploration and characterization of geological features by autonomous rovers. A rover that is capable of deciding which observations are more important relieves the engineering team from much of the...

Multiphysics, simulation lifecycle management, unified simulation, and other terms are becoming the new trends in analysis and simulation software. There are new capabilities, new options for...

Briefs: Information Technology
Two Mathematical Models of Nonlinear Vibrations

Two innovative mathematical models of nonlinear vibrations, and methods of applying them, have been conceived as byproducts of an effort to develop a Kalman filter for highly precise estimation...

Products: Electronics & Computers
Dual-Core VME Single-Board Computer Delivers Low Voltage

Curtiss-Wright Controls Embedded Computing (Leesburg, VA) offers the SVME/DMV-1901 6U VME single-board computer with the Intel® Core™ Duo processor running at speeds of 1.67 and 2.0 GHz.

Products: Electronics & Computers
PrXMC/PrPMC Module

The TPA-XMC™ PrXMC/PrPMC Module from Themis® Computer (Fremont, CA) provides dual 64-bit processing and flexible high-speed I/O while consuming as little as 15 watts. The energy-efficient module is based on P.A. Semi's...

Products: Electronics & Computers
IP Core Software for FPGA Chips

SERCOS International (Santa Rosa Beach, FL) has introduced Easy-I/O, a freely downloadable IP core software for low-cost FPGA chips that allows SERCOS III to be integrated into basic I/O slave devices with...

Products: Electronics & Computers
SHB Express™ and PICMG® 1.3

Trenton Technology (Atlanta, GA) announces five new SHB Express™ and PICMG® 1.3 backplanes designed to meet the needs of a wide variety of fields including medical diagnostics, military, telecom, and...

Products: Electronics & Computers
High-Speed Digitizer

Agilent Technologies Inc. (Santa Clara, CA) has introduced the Acqiris DP1400 high-speed digitizer. Designed in a standard short PCI card format, the compact DP1400 combines data converter ASIC technology with component...

Products: Electronics & Computers
GPU Processors

NVIDA (Santa Clara, CA) has released its new family of NVIDA® Tesla™ processors based on a new graphics processing unit (GPU). The family includes the Tesla™ GPU Computing Processor, which is a computing board...

Products: Electronics & Computers
Terminal Blocks

The MTB Series from BlockMaster Electronics (Elk Grove Village, IL) is available in configurations from 2 to 18 poles at a 3.5 mm. pitch, accepting a wire size range of up to 16AWG. Rated voltage is at 300V with a current...

Products: Electronics & Computers
Power Supply for PC/104, PC/104-PLUS

The MESA 4P20 is an 11W POE power supply for PC/104 and PC/104-PLUS systems from MESA Electronics (Richmond, CA). The 4P20 allows a remote PC/104 system to get power from a single CAT5 cable up to 100...

Products: Electronics & Computers
Digital I/O Board

The new MSXB 078 digital I/O expansion hardware from Microstar Laboratories, Inc. (Bellevue, WA) combines simultaneous operation on all channels with an isolated ground to protect applications from sources of error. The...

Products: Electronics & Computers
6U CompactPCI Express CPU Board

One Stop Systems (Escondido, CA) has announced the release of its 6U CompactPCI Express (CPCIe) Core™ Duo 1.66GHz CPU Board. The two-slot wide CPCIe CPU board features front panel I/O with standard...

Products: Electronics & Computers
Broadband Surface Mount TO-5 Relays

The SGRF100 and SGRF300 are two ultraminiature broadband TO-5 relays from Teledyne Relays (Hawthorne, CA). The hermetically sealed RF relays feature a surface-mount solution and unique ground shield. They...

Products: Electronics & Computers
Thin Film Thermoelectric Cooler

Nextreme (Research Triangle Park, NC) has developed the eTEC™, an advanced thin film embedded thermoelectric cooler designed to address thermal management needs of the electronics, photonics, bio-tech,...

Products: Electronics & Computers
DSP Development Kit

VMETRO™ (Houston, TX) and Impulse Accelerated Technologies, Inc. (Houston, TX) have announced the V5+C, an advanced platform for rapid prototyping and algorithm development. The DSP development kit, which includes...

Application Briefs: Electronics & Computers
Embedded Design and Technology Trends in the Military

A presidential election... the continuance or end of deploying troops in Iraq...Phoenix spacecraft landing on Mars...2008 could be an exciting year, so let's take a moment to look at a...

There’s no rule that says when a technology becomes mature, but one might think that image sensors would be by now, 40 years after their conception. Nothing could be further from the truth....

Application Briefs: Photonics/Optics
DisplayPort Technology — Heir Apparent to VGA?

For the last 20 years we have connected our monitors to our computer systems having the confidence that upon turn-on, we could surf or create with never a consideration of whether the display would operate satisfactorily. VGA (Video Graphics Adaptor) technology enabled us to do that with CRTs as...

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