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The navigation message consists of 30-second frames 1,500 bits long, divided into five 6-second subframes of ten 30-bit words each. 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.
generator control unit GDOP Geometric dilution of precision GEA Ground effect area: GGS Global positioning system ground station GHz Gigahertz: GLOC g-induced loss of consciousness "g" Is acceleration relevant to the acceleration caused by gravity GLONASS Global Navigation Satellite System: Or GNSS GLNS GPS Landing and Navigation System GLNU
Almanac data can be received from any of the GPS satellites and is considered valid for up to 180 days. Warm or normal The receiver has estimates of the current time within 20 seconds, the current position within 100 kilometers, its velocity within 25 m/s, and it has valid almanac data.
A set of Gold codes can be generated with the following steps. Pick two maximum length sequences of the same length 2 n − 1 such that their absolute cross-correlation is less than or equal to 2 (n+2)/2, where n is the size of the linear-feedback shift register used to generate the maximum length
In the field of geodesy, Receiver Independent Exchange Format (RINEX) is a data interchange format for raw satellite navigation system data. This allows the user to post-process the received data to produce a more accurate result — usually with other data unknown to the original receiver, such as better models of the atmospheric conditions at time of measurement.
Field name Index (Bytes) Purpose Start-of-frame: 0: Denotes the start of frame transmission (v1.0: 0xFE) Payload-length: 1: length of payload (n) Packet sequence
The word of the day, time of day and net identifier are input to a cryptographic pseudorandom number generator that controls the frequency changes. HAVE QUICK is not an encryption system, though many HAVE QUICK radios can be used with encryption; e.g. the KY-58 VINSON system.