Tallinn Airport or Lennart Meri Tallinn Airport is the largest airport in Estonia as well as the only airport offering international services, and serves as a hub for the national airline Nordica, as well as the secondary hub for AirBaltic, cargo airline Airest and LOT Polish Airlines. It was also the home base of the now defunct national airline Estonian Air. Tallinn Airport is open to both domestic and international flights. It is located 2.7 nautical miles southeast of the centre of Tallinn on the eastern shore of Lake Ülemiste. It was formerly known as Ülemiste Airport.
Lidar is a method for determining ranges by targeting an object with a laser and measuring the time for the reflected light to return to the receiver. It can also be used to make digital 3-D representations of areas on the earth's surface and ocean bottom by varying the wavelength of light. It has terrestrial, airborne, and mobile applications.
In the context of information security, and especially network security, a spoofing attack is a situation in which a person or program successfully identifies as another by falsifying data, to gain an illegitimate advantage.
A dipstick is one of several measurement devices.
An optical cavity, resonating cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser light. They are also used in optical parametric oscillators and some interferometers. Light confined in the cavity reflects multiple times, producing standing waves for certain resonance frequencies. The standing wave patterns produced are called modes; longitudinal modes differ only in frequency while transverse modes differ for different frequencies and have different intensity patterns across the cross-section of the beam.
Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational semiconductor company specializing in data conversion, signal processing and power management technology, headquartered in Wilmington, Massachusetts.
In satellite laser ranging (SLR) a global network of observation stations measures the round trip time of flight of ultrashort pulses of light to satellites equipped with retroreflectors. This provides instantaneous range measurements of millimeter level precision which can be accumulated to provide accurate measurement of orbits and a host of important scientific data. The laser pulse can also be reflected by the surface of a satellite without a retroreflector, which is used for tracking space debris.
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows small electronic receivers to determine their location to high precision using time signals transmitted along a line of sight by radio from satellites. The system can be used for providing position, navigation or for tracking the position of something fitted with a receiver. The signals also allow the electronic receiver to calculate the current local time to high precision, which allows time synchronisation. These uses are collectively known as Positioning, Navigation and Timing (PNT). Satnav systems operate independently of any telephonic or internet reception, though these technologies can enhance the usefulness of the positioning information generated.
Topcon Corporation is a Japanese manufacturer of optical equipment for ophthalmology and surveying.
Global Navigation Satellite System (GNSS) receivers, using the GPS, GLONASS, Galileo or BeiDou system, are used in many applications. The first systems were developed in the 20th century, mainly to help military personnel find their way, but location awareness soon found many civilian applications.
An indoor positioning system (IPS) is a network of devices used to locate people or objects where GPS and other satellite technologies lack precision or fail entirely, such as inside multistory buildings, airports, alleys, parking garages, and underground locations.
Road surface textures are deviations from a planar and smooth surface, affecting the vehicle/tyre interaction. Pavement texture is divided into: microtexture with wavelengths from 0 mm to 0.5 millimetres (0.020 in), macrotexture with wavelengths from 0.5 millimetres (0.020 in) to 50 millimetres (2.0 in) and megatexture with wavelengths from 50 millimetres (2.0 in) to 500 millimetres (20 in).
Location awareness refers to devices that can passively or actively determine their location. Navigational instruments provide location coordinates for vessels and vehicles. Surveying equipment identifies location with respect to a well-known location wireless communications device.
The IEEE Consumer Technology Society (CTSoc), formerly IEEE Consumer Electronics Society (CESoc), is a professional society of the Institute of Electrical and Electronics Engineers (IEEE) that focuses on the "theory and practice of Electronic Engineering and of the allied arts and sciences with respect to the field of Consumer Electronics and the maintenance of a high professional standing among its members". Wahab Almuhtadi is the current president of the IEEE CE society.
Anthony E. Siegman was an electrical engineer and educator at Stanford University who investigated and taught about masers and lasers. Known to almost all as Tony Siegman, he was president of the Optical Society of America [now Optica (society)] in 1999 and was awarded the Esther Hoffman Beller Medal in 2009.
The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope. This performance measure has less stochasticity and subjectivity in comparison to other pavement performance indicators, such as PCI, but it is not completely devoid of randomness. The sources of variability in IRI data include the difference among the readings of different runs of the test vehicle and the difference between the readings of the right and left wheel paths. Despite these facts, since its introduction in 1986, the IRI has become the road roughness index most commonly used worldwide for evaluating and managing road systems.
CubETH is a Swiss satellite project. As of 2015, it is being developed by several Swiss academic and industrial partners. The spacecraft is a single unit CubeSat and therefore 10 x 10 x 10 cm (3.9 x 3.9 x 3.9 in) in size. Its main goal is to prove the feasibility of attitude and orbit determination with low cost commercial off-the-shelf GNSS-receivers.
Department of Geodesy Gdańsk University of Technology – continues the tradition of the Department of Surveying and Cartography, established at Gdańsk University of Technology in 1945.
Intrinsic localization is a method used in mobile laser scanning to recover the trajectory of the scanner, after, or during the measurement. Specifically, it is a way to recover the spatial coordinates and the rotation of the scanner without the use of any other sensors, i.e, extrinsic information. To function in practice, intrinsic localization relies on two things. First, a priori knowledge of the scanning instruments, and second, on sensor data overlap employing simultaneous localization and mapping (SLAM) methods. The term was coined in.
Kenju Otsuka is a Japanese engineer and physicist concerned with lasers and quantum electronics.
