Products/Services for Gps Subframe Encode

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    GPS Software - (83 companies)
    GPS software is used to program, manage, and monitor GPS receivers, radio-navigational devices that provide positional information for objects on Earth based on data transmitted by orbiting satellites. GPS, an acronym for global positioning system... Learn More
  • GPS Instruments and Devices-Image
    GPS Instruments and Devices - (348 companies)
    Global positioning system (GPS) instruments and GPS devices are radio-navigational devices that provide accurate position information about objects on Earth, based on information from orbiting satellites. Equipped with rubidium atomic clocks, 24 GPS... Learn More
  • GPS Chips and Modules-Image
    GPS Chips and Modules - (56 companies)
    GPS chips and modules compare signals from several geo-positioning satellites to determine position on the Earth's surface. GPS is an acronym for global positioning system. GPS modules compare signals from several geo-positioning satellites... Search by Specification | Learn More
  • Time and Frequency Standards-Image
    Time and Frequency Standards - (35 companies)
    ...in networks & telecommunications, observatories, utilities and navigation (GPS). Atomic clocks use the atomic resonant frequency of a gas or lasing medium as basis of it's timekeeping mechanism. Atomic are not radioactive. The signal used is derived from the electromagnetic... Search by Specification | Learn More
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    Altimeters - (18 companies)
    Altimeters are instruments used to determine an object’s altitude above ground or sea level by interpreting measurements of atmospheric pressure, radar or GPS signals. Altimeters measure the device's altitude above ground or sea level to provide... Learn More
  • Mobile and Wireless Software - (176 companies)
    Mobile and wireless software is used to program and manage mobile and wireless devices such as cell phones, personal digital assistants (PDA), and global positioning systems (GPS). System administrations and information technology (IT) personnel use... Learn More
  • Magnetic Stripe Readers and Magnetic Stripe Encoders - (119 companies)
    Magnetic stripe readers and magnetic stripe encoders read and encode magnetic stripe cards, credit cards, etc. Magnetic stripe readers and magnetic stripe encoders are devices that read and encode magnetic stripe cards such as driver 's licenses... Learn More
  • Codec ICs - (55 companies)
    Codec IC chips are used to encode and decode (or compress and decompress) various types of data, particularly when the bulk storage is required. Codec IC chips are used to encode and decode or compress and decompress various types of data... Search by Specification | Learn More
  • Mapping and Surveying Services - (1121 companies)
    ...and surveying services are staffed by professional engineers and licensed land surveyors who use tools and equipment such as global positioning (GPS) base stations and portable GPS radio high-frequency (HF) receivers. Mapping and surveying services also... Search by Specification | Learn More
  • Antennas - (1115 companies)
    ...to the antenna. The rate of oscillation is known as frequency and is measured in hertz, and RF is transmitted between 3Hz to 300THz. In order to encode information within the wave, an operator needs to modulate the wave accordingly. Pulse modulation... Search by Specification | Learn More
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More Information on: Gps Subframe Encode

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  • China Satellite Navigation Conference (CSNC) 2013 Proceedings
    Subframe 2 and subframe 3 of GPS L1C are separately encoded using rate 1/2 LDPC codes, as a result, there are 1,200 coded bits for subframe 2 and 548 coded bits for subframe 3 [2].
  • A Software-Defined GPS and Galileo Receiver
    The first important issue is to determine the time when the current subframe was transmitted from the GPS satellite. Parity encoding equations .
  • Encyclopedia of Space Science and Technology Online - Volume 1 G
    ...of 50 bits per second and consists of a set of 6-second subframes (ten 30-bit... The data encoded include the full ephemeris required to calculate the current satellite position, the satellite clock quadratic polynomial model and corrections to GPS time, almanac data used to position all the other satellites, and a hand-over-word for P/Y-code...
  • Asynchronous Self-Localization of Sensor Networks with Large Clock Drift
    For ranging signals with coding, we can adapt a scheme used in the GPS code pseudorange, in which the satellite time that is kept in Z-count is embedded in every subframe of the navigation message and is broadcast from the satellite... ...packet with a pre-defined structure but without time-stamp of TOm being encoded is sufficient for...
  • A data archive of GPS navigation messages
    Subframe words 3–10 encode the subframe-specific information (Misra and Enge 2002). As of this writing, GFZ has deployed 23 geodetic GPS receivers within its global 1 Hz ground...
  • Global Positioning System: Theory and Applications, Volume I > Gps Satellite And Payload
    ...is a 50 b/s datastream arranged in 25 pages, each page containing 5 subframes , with each subframe... The naviga- tion datawords are encoded with (32, 24) Hamming parity providing single error correction and double... Dual-frequency transmission of ranging signals by the GPS satellite enables user equipment with dual-frequency capability...
  • Modern Transport Telematics
    ...carry a new, modernized data format, which replaces the strategy of frame and subframes by a flexible... According to the satellite GPS block satellites broadcast one, two, three or four different data messages [4... This message is half–rate forward error correction (FEC) encoded using a 7–bit convolutional encore to decrease the...
  • A Terrestrial Positioning and Timing System (TPTS)
    ...by various TPTS sites will be transmitted with different PRNs, with different data encoded in the various... ...the mobile user; this would be similar to a small Doppler offset in GPS to help separate... ...in time, corresponding to the beginning of the TPTS Signal Message Data Format Subframe (that will be...
  • S/W based IF signal simulator prototyping for L1 C/A, L2C, and E1(B&C)
    The day and time of RINEX is converted to the GPS time, and the ephemeris data is... The ephemeris extracted from RINEX is converted to the binary type, which is encoded by the defined... Finally, the generated subframe is saved in file type.
  • Global Positioning System: Theory and Applications, Volume I > Gps Navigation Data
    Table 3 Parity encoding equations for each 30-bit word (from GPS -ICD-200)1 ...is used to identify the last 2 bits of the previous word of the subframe ; Z)25, ..
  • Fundamentals of GPS Receivers
    A group of five subframes is referred to as a frame. ...interval form a complete set of almanac/ephemeris data for all of the satellites in the GPS constellation ...messages are transmitted at 25 bits/s, half the rate of legacy navigation messages, due to FEC encoding .
  • Global Positioning System: Theory and Applications, Volume I > Gps Receivers
    ...a legitimate HOW word—the Z-count is reasonable, and it agrees with the subframe count.36 Of... Although the GPS Signal Specifications18 '19 show otherwise for some of the message words (as is the... The parity encoding algorithm is a (32,26) Hamming code, thus the parity overlaps the 30-bit...
  • Global Positioning System: Theory and Applications, Volume II > GPS and Global Navigation Satellite System (GLONASS)
    Fig. 3 GLONASS C/A-code data message subframe format. The NAVSTAR GPS ephemeris data describe a Kepler ellipse with additional corrections that then allow the satellite's... In the GLONASS system, the satellite's instanta- neous position and velocity are encoded at fixed time intervals...


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