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Real-time Kinematic
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 provide real-time corrections, providing up to centimetre-level accuracy (see DGPS). With reference to GPS in particular, the system is commonly referred to as carrier-phase enhancement, or CPGPS. It has applications in land survey, hydrographic survey, and in unmanned aerial vehicle navigation. Background The distance between a satellite navigation receiver and a satellite can be calculated from the time it takes for a signal to travel from the satellite to the receiver. To calculate the delay, the receiver must align a pseudorandom binary sequence contained in the signal to an internally generated pseudorandom binary sequence. Since th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SparkFun RTK Surveying Kit (51635467766)
SparkFun Electronics (sometimes known by its abbreviation, ''SFE'') is an electronics retailer in Niwot, Colorado, United States. It manufactures and sells microcontroller development boards and breakout boards. All products designed and produced by SparkFun are released as open-source hardware. History SparkFun Electronics was founded in 2003 by Nathan Seidle when he was a Junior at University of Colorado Boulder. Its first products were Olimex printed circuit boards. The name 'SparkFun' came about because one of the founders of SparkFun was testing a development board, and sparks flew out; ''Fun'' was chosen because the company's self-stated aim is to educate people about electronics. In January 2011, an education department was formed to outreach to local schools, hackerspaces, and events. Open-source hardware During the Open Source Hardware summit in October 2010, SparkFun was one of the contributors in drafting the first OSHW definition. All products designed and produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomatics Engineering
Geomatics is defined in the ISO/TC 211 series of standards as the "discipline concerned with the collection, distribution, storage, analysis, processing, presentation of geographic data or geographic information". Under another definition, it consists of products, services and tools involved in the collection, integration and management of geographic (geospatial) data. It is also known as geomatic(s) engineering (geodesy and geoinformatics engineering or geospatial engineering). Surveying engineering was the widely used name for geomatic(s) engineering in the past. History and etymology The term was proposed in French ("géomatique") at the end of the 1960s by scientist Bernard Dubuisson to reflect at the time recent changes in the jobs of surveyor and photogrammetrist. The term was first employed in a French Ministry of Public Works memorandum dated 1 June 1971 instituting a "standing committee of geomatics" in the government. The term was popularised in English by French- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NTRIP
The Networked Transport of RTCM via Internet Protocol (NTRIP) is a protocol for streaming differential GPS (DGPS) corrections over the Internet for real-time kinematic positioning. NTRIP is a generic, stateless protocol based on the Hypertext Transfer Protocol HTTP/1.1 and is enhanced for GNSS data streams. The specification is standardized by the Radio Technical Commission for Maritime Services (RTCM). NTRIP was developed by the German Federal Agency for Cartography and Geodesy (BKG) and the Dortmund University Department of Computer Science. Ntrip was released in September 2004. The 2011 version of the protocol is version 2.0. NTRIP used to beThe "public version" of the protocol is missing all protocol details and examples, and refers to purchase the document from RTCM; it can be downloaded froBKG an open standard protocol but it is not available freely (as of 2020). There is an open source Open source is source code that is made freely available for possible modifica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NavIC
The Indian Regional Navigation Satellite System (IRNSS), with an operational name of NavIC (acronym for 'Navigation with Indian Constellation; also, 'sailor' or 'navigator' in Indian languages), is an autonomous regional satellite navigation system that provides accurate real-time positioning and timing services. It covers India and a region extending around it, with plans for further extension. An extended service area lies between the primary service area and a rectangle area enclosed by the 30th parallel south to the 50th parallel north and the 30th meridian east to the 130th meridian east The meridian 130° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, Australia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole. The 130th meridian east forms a great ..., beyond borders. The system currently consists of a constellation of eight satellites, with two additional satellites on ground as stand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
