Keyword: Radar

Briefs: Sensors/Data Acquisition

Millimeter-wave (mm-wave) imaging techniques are already a popular solution for imaging through dust and fog. While mm-wave offers excellent penetration to dust when compared with infrared or optical sensing,...

Articles: Sensors/Data Acquisition

On April 25, 2015, a magnitude - 7.8 earthquake caused widespread building damage in central Nepal. The Italian Space Agency’s COSMO-SkyMed Synthetic Aperture Radar (SAR) satellite acquired data...

Briefs: RF & Microwave Electronics
Wideband, Dual-Polarized, Ultra-Low-Noise Focal Plane Array Feed for Active/Passive Microwave Remote Sensing

NASA missions utilize active, passive, or both, microwave sounders with a large reflector antenna as an important component. In most of these applications, design engineers have realized that desirable science requirements (spatial and...

Briefs: RF & Microwave Electronics
RF System MATLAB Model Simulation Using a Variety of Data Sources

During the development of the Soil Moisture Active-Passive (SMAP) High-Power Amplifier (HPA), a power glitch was observed with the characteristic of producing small 0.1-0.3 dB jumps in power across temperature. In order to troubleshoot this glitch behavior, a nonlinear model that...

Briefs: Information Technology
Marshall MRMS Mosaic Python Toolkit (MMM-Py)

This Python script will allow the user to read, analyze, and display National Oceanic and Atmospheric Administration (NOAA) Multi-Radar/Multi-Sensor(MRMS) mosaic tile files containing mosaic radar reflectivities on a national 3D grid. Simple diagnostics and plotting, as well as computation of...

Briefs: Software
Python Turbulence Detection Algorithm (PyTDA)

This software, written in the Python programming language, estimates turbulence from Doppler radar data. It ingests radar data using the Department of Energy’s Py-ART open-source radar software toolkit.

INSIDER: Electronics & Computers

As mobile and wearable devices such as smartwatches grow smaller, it gets tougher for people to interact with screens the size of a matchbook. That could change with a new sonar...

Briefs: Electronics & Computers

Microwave spectroscopy is an invaluable tool for studying the structure, dynamics, and even the handedness of gas phase species....

Briefs: Electronics & Computers

Constellations of low-cost, small instruments provide global, distributed, and frequent coverage, enabling unique science observations. However, radars are active instruments...

Briefs: Energy

Historically, the term microwave power module (MPM) has been associated with a small, fully integrated, self-contained radio frequency (RF) amplifier that combines both...

Briefs: Electronics & Computers

All-solid-state, room-temperature, multipixel, sub milli meter-wave re ceiv ers are in demand for efficient spatial mapping of a planet’s atmosphere composition and...

Briefs: Manufacturing & Prototyping

W-band active phased array antennas have a very small inter-element pitch (≈2 mm). In this innovation, instead of trying to integrate isolators into the unit...

Briefs: Sensors/Data Acquisition
SMAP SDS Science Processing and Data Management System

The Science Processing and Data Management (SPDM) system’s primary functions are to control and monitor science processes and data products for Soil Moisture Active Passive (SMAP) Science Data System (SDS). SPDM adapts the Apache/OODT Framework 0.3 as the basic infrastructure. Although the...

Briefs: Software
Control Software for Integrated CW Radar Module

This software controls the behavior of a miniaturized microwave radar module. It controls the hardware, digitizes raw samples from the analog output of the module, and applies DSP (digital signal processing) algorithms to the data stream to reduce the bandwidth and data rate. It also implements an...

Briefs: Information Technology
Furuno Radar/SureTrak Interface Software

The Wallops Flight Facility Launch Range has a need to interface data from ship surveillance Furuno radar to an existing surveillance display system (SureTrak). SureTrak is a multi-sensor waterway and air surveillance system. The display of Furuno radar data by the SureTrak system will be used for risk...

Briefs: Green Design & Manufacturing
Characteristics of the Spliced Kennedy Space Center Doppler Radar Wind Profiler Database

NASA relies on the Natural Environments (NE) Branch located at Marshall Space Flight Center (MSFC) to provide databases that represent the wind magnitudes and wind changes expected on day-of-launch (DOL) for vehicle programs that MSFC NE supports. MSFC NE...

Application Briefs: Aerospace
Custom linear guide rails
NB Corporation of America
Hanover Park, IL
1-800-521-2045
www.nbcorporation.com

ADC USA, Inc. (Ithaca, NY) develops and supplies high-precision...

Briefs: Aerospace
Robust, Low-Density Parity- Check Decoder Design to Mitigate Pulsed Radio Frequency Interference

Low-Density Parity-Check (LDPC) codes are a class of forward error correction (FEC) linear block codes that provide near-capacity performance for power-efficient communications. Optimum decoding requires accurate combining ratio estimation to scale...

Briefs: Information Technology
iPhone App to Facilitate Airborne Radar Operations

The Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) is an Earth imaging radar that flies on a Gulf-Stream Jet. Its mission is to collect data for NASA scientists who are using Synthetic Aperture Radar to develop methods for monitoring changes in the Earth’s surface. As with many...

Briefs: Information Technology

About 2.5 seconds after the launch of STS-114, the first Return to Flight launch after the Columbia accident, a large bird struck the external tank and fell into the exhaust plume. While this particular bird strike did not...

Briefs: Robotics, Automation & Control

There are locations that are either too hazardous to land and gather data, or not practical to land. Also, data may need to be gathered from multiple (tens to hundreds) locations (sometimes at once). This...

Briefs: Sensors/Data Acquisition
SMAP Radiometer Instrument Science Signal and Data Processing Software (SPS)

This technology was developed for the Soil Moisture Active Passive (SMAP) mission and for the IRAD-FY13 Technology for Radiometer RFI Noise Detection & Mitigation Based on HHT2. Spacecraft beyond the present state-of-the-art passive radiometry will make use of...

Briefs: RF & Microwave Electronics

Existing implementations of continuous wave (CW) radar are not packaged appropriately for use as part of a heartbeat detection system for disaster search and rescue. They use separately packaged microwave...

Briefs: Robotics, Automation & Control

Spaceborne gimbal systems are typically bulky with large footprints. Such a gimbal system may consist of a forked elevation stage rotating on top of the azimuth motor, and occupy a large...

Briefs: Sensors/Data Acquisition
Test, Calibration, and Training Target for a Microwave Sensor

Human subjects are unsuitable for objective performance testing of victim detection radar because their heart and respiration rates are not controllable or repeatable. There are limitations on human targets from a safety standpoint as well. It is difficult to relate the ground truth...

Briefs: Electronics & Computers
An Earth-Observing, Frequency-Agile Radar Receiver for RFI Mitigation

The Soil Moisture Active Passive (SMAP) mission will have the first L-band radar/radiometer sensor suite dedicated to global measurements of soil moisture. For the radar sensor, the requirements for achieving high backscatter measurement accuracy from low-Earth orbit present a...

Briefs: Aerospace
Web-Enabled and Automatic Ground Processing Infrastructure Servicing the UAVSAR Airborne Missions

The UAVSAR (Uninhabited Aerial Vehicle Synthetic Aperture Radar) ground data processing infrastructure facilitates a wide range of mission operational processes through a centralized database, Web-enabled interfaces, and background automation. By...

Briefs: Electronics & Computers
Advanced Pulse Compression System and Testbed

Detection of low-level water clouds from space is one of the outstanding challenges in radar remote sensing. Spaceborne remote sensing is the only means of assessing the distribution and variability of cloud cover on a global basis. Uncertainties in models of the Earth’s heating budget will persist...

Briefs: Physical Sciences
A High-Cross-Polarization-Isolation, Multi-Frequency Antenna for Cloud and Precipitation Research

The Global Precipitation Mission (GPM) has an immediate need for a matched-beam Ku-band/Ka-band antenna system that can be used as a component of a ground validation radar. Retrieval techniques based on both polarization and differential absorption...