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The first Philippine satellite launched to space was Agila-2 which was placed to orbit in 1997. The Philippine Space Agency is the lead government organization of the Philippine space program since 2019 but all active satellites are built and operated by the Department of Science and Technology (DOST) and its child agencies.
Sidereal time is a "time scale that is based on Earth's rate of rotation measured relative to the fixed stars ". [1] Viewed from the same location, a star seen at one position in the sky will be seen at the same position on another night at the same time of day (or night), if the day is defined as a sidereal day (also known as the sidereal ...
Each subframe has the GPS time in 6-second increments. Subframe 1 contains the GPS date (week number), satellite clock correction information, satellite status and satellite health. Subframes 2 and 3 together contain the transmitting satellite's ephemeris data. Subframes 4 and 5 contain page 1 through 25 of the 25-page almanac. The almanac is ...
Real-time kinematic positioning ( RTK) is the application of surveying to correct for common errors in current satellite navigation (GNSS) systems. It uses measurements of the phase of the signal's carrier wave in addition to the information content of the signal and relies on a single reference station or interpolated virtual station to ...
Combined, these sources of time dilation cause the clocks on the satellites to gain 38.6 microseconds per day relative to the clocks on the ground. This is a difference of 4.465 parts in 10 10 . [13] Without correction, errors of roughly 11.4 km/day would accumulate in the position. [14]
GLONASS is a global navigation satellite system, providing real time position and velocity determination for military and civilian users. The satellites are located in middle circular orbit at 19,100 km (11,900 mi) altitude with a 64.8° inclination and an orbital period of 11 hours and 16 minutes (every 17 revolutions, done in 8 sidereal days ...
A typical ground station right now [when?] has nine 2.86 m (9.4 ft) antennas in a 400 m 2 (4,306 sq ft) fenced in area. According to their filing, SpaceX's ground stations would also be installed on-site at Google data-centers world-wide. Satellite revisions MicroSat
Mabuhay Satellite Corporation (MSC) was a Filipino aerospace corporation responsible for operating communication satellites and before 2009, the only Philippine company to do so. It was later renamed as Mabuhay Investment Corporation (MIC) and became a holding company owned by PLDT. [1] It once owned the Agila 2 satellite which provides ...