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software-defined radio and signal processing SDRangel: GPL: Windows, macOS, Linux: software-defined radio SDR# Freeware Windows software-defined radio receiver SDR++: GPL: Windows, macOS, Linux, Android: software-defined radio receiver WSJT: GPL: Windows, Unix, Unix-like: weak signal communication, modem for FT-8, FT-4, JT-65, and WSPR WSJT-Z ...
GoTo mounts are pre-aligned before use. When it is powered on, it may ask for the user's latitude, longitude, time, and date. It can also get this data from a GPS receiver connected to the telescope or built into the telescope mount itself, and the mount controller can have its own real time clock.
GNSS receivers are sold as portable devices, and are also incorporated in cell phones, vehicles and weapons, even artillery shells. VOR receiver - navigational instrument on an aircraft that uses the VHF signal from VOR navigational beacons between 108 and 117.95 MHz to determine the direction to the beacon very accurately, for air navigation.
Apart from general-purpose radio, some unusual applications of WiNRADiO receivers have been reported, such as in radio astronomy or search for extraterrestrial intelligence. The Adelaide Hills Radio Telescope (radio astronomy) uses WiNRADiO equipment and software . [2]
A star tracker is an optical device that measures the positions of stars using photocells or a camera. [1] As the positions of many stars have been measured by astronomers to a high degree of accuracy, a star tracker on a satellite or spacecraft may be used to determine the orientation (or attitude) of the spacecraft with respect to the stars ...
Real-time locating systems (RTLS), also known as real-time tracking systems, are used to automatically identify and track the location of objects or people in real time, usually within a building or other contained area.
The use of GNSS in MEO, GEO, HEO, and highly elliptical orbits is feasible only if the receiver can acquire and track the much weaker (15 - 20 dB) GNSS side-lobe signals. This design constraint, and the radiation environment found in space, prevents the use of COTS receivers. It is easier for low Earth orbit satellites to use GNSS.
SiRFstarIII GSC3f SiRFstarIII chip based 20-channel GPS receiver with WAAS/EGNOS support. SiRFstarIII is a range of high sensitivity GPS microcontroller chips manufactured by SiRF Technology. GPS microcontroller chips interpret signals from GPS satellites and determine the position of the GPS receiver. It was announced in 2004.