Keyword: Global positioning systems (GPS)

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NASA Spinoff: Photonics/Optics

NASA’ Deep Space Network (DSN), a sort of GPS system for space, relies on atomic clocks for extreme accuracy. Any modern navigation system must accurately time radio signals to triangulate a...

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Briefs: RF & Microwave Electronics
Metamaterials that manipulate microwave energy can be fabricated using low-cost inkjet printing.
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Briefs: Test & Measurement
The comb detects even the smallest amounts of greenhouse gases in the air or look for disease in human breath.
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Briefs: Test & Measurement
The open-architecture flight software package provides solutions for onboard orbit determination.
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Technology Leaders: Energy
Just like smartphones, the same trend of combining separate components into one device is also apparent in industrial automation.
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Briefs: Imaging
This method detects power line faults using a drone.
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Application Briefs: Sensors/Data Acquisition
Soldiers tend to dodge, dive, duck, and run, creating motion measurement challenges.
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Briefs: Test & Measurement
The technique could be used to improve navigation for robots, drones, or pedestrians.
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Briefs: Manufacturing & Prototyping
A technology uses a combination of WiFi signals and accelerometer technology to track devices in near-real-time.
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Application Briefs: Test & Measurement

Smart agriculture, also known as precision agriculture, allows farmers to maximize yields using minimal resources such as water, fertilizer, and...

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Briefs: Communications

GPS signals do not penetrate very deeply or at all in water, soil, or building walls, and therefore can’t be used by submarines or in underground activities such as surveying mines. GPS also...

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Articles: Medical

Throughout the history of the electronics industry, the old refrain that systems will continuously become faster, simpler, and cheaper has remained true. In the early days of computer vision, a frame...

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Facility Focus: Materials

The Air Force Research Laboratory (AFRL), headquartered at Wright-Patterson Air Force Base in Ohio, was formed in October 1997 through the consolidation of four former Air Force laboratories and the Air Force...

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Briefs: Electronics & Computers
Location Awareness Algorithm for Internet of Things Devices

Positioning of wireless devices is centralized, depending on “anchors” with known locations such as cell towers or GPS satellites to communicate directly with each device. As the number of devices increases, anchors must be installed at higher density. Centralized positioning can...

Briefs: Data Acquisition

Recent findings indicate that frequent, short-term crew exposure to elevated CO2 levels, combined with other physiological impacts of microgravity, may lead to a...

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Briefs: Mechanical & Fluid Systems

A major challenge to assault prevention is that during an assault, victims often do not have an easily accessible way to call for help. Whether calling 911 or using an emergency alert...

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Briefs: Mechanical & Fluid Systems

NASA Ames Research Center has developed a novel, low-cost, self-contained guidance system for small payload operators. Small satellites are becoming ever more capable of performing valuable missions for both...

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Briefs: Aerospace

NASA Langley Research Center has developed a breakthrough technology called Safeguard that can alleviate hazards with unmanned aircraft (UA) flying beyond their authorized perimeters and...

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Briefs: RF & Microwave Electronics

Leaders of teams such as first responders must maintain situational awareness to effectively react, coordinate, and respond to circumstances that can often become hazardous. Effective...

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Briefs: RF & Microwave Electronics
Remote Detection of Electronic Devices

Non-Linear Junction Detection is a well-known technique for detecting electronics that utilize semiconductor (solid-state) junctions. The current state of the art for finding hidden electronics — such as electronic eavesdropping devices — using this technology has a maximum range of about 2 m, and more...

Briefs: Communications
Zero-Power Radio Receiver

There are several different types of wireless radio frequency identification (RFID) tags that are truly zero-power radios. Currently, most unpowered wireless RFID tags only have a range of a few meters. There are longrange, low-powered tags that draw energy either from a battery or some other form of localized power. A...

Briefs: Materials

NASA Langley Research Center has developed a method to create Sequential/Simultaneous Multi-Metallized Nanocomposites (S2M2N) via supercritical fluid (SCF) sequential or...

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NASA Spinoff: Communications

Spinoff is NASA’s annual publication featuring successfully commercialized NASA technology. This commercialization has contributed to the development of products and services in the...

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Facility Focus: Research Lab

The Naval Research Laboratory (NRL) began operations in 1923 as the United States Navy's first modern research institution, and it continues today as one of the Navy's premier R&D resources. NRL's early 20th...

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Facility Focus: Defense

The Defense Advanced Research Projects Agency (DARPA) was created with a national sense of urgency in February 1958 amidst one of the most dramatic moments in the history of the Cold War and the...

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Briefs: Aerospace
Calibration and Synchronization of Micro-Air-Vehicle Autopilots

Conventional calibration of an inertial measurement unit (IMU) through open-loop data collection includes typical flight simulator systems that provide processed stimuli to emulate real-life flight conditions. Other solutions involve testing inertial measurement devices on a...

Briefs: Test & Measurement
Decoupled Ranging and Orientation Inversions Enable Linear and Fast Long-Range Non-Line-of-Sight Positioning

The wireless radio positioning or radiolocation problem is of great importance in society today. Existing radiolocation systems such as the Global Positioning System (GPS), Radio-Frequency Identification (RFID) systems, and Ultra...

Briefs: Communications
Deep-Space Positioning System

NASA's Jet Propulsion Laboratory (JPL) has developed a compact, low-power, self-contained instrument that provides the equivalent of GPS throughout the solar system without the aid of an artificially provided infrastructure. The state-of-the-art X-ray navigation instrument is also able to determine the position of a...

Briefs: Communications
GPS Satellite Geometry Analysis Tool (GPSGEM)

The purpose of the GPS Satellite Geometry Analysis Tool (GPSGEM) is to evaluate GPS satellite geometry for a given Earth-fixed location or for a provided trajectory. The tool will generate a listing of all satellites in view, the best satellite combination defined by the most optimum Geometric...

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