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receiver part. The space constellation is composed of 24 navigation satellites, which is equivalent to providing 24 known space points. The ground monitoring part is used to monitor the state of the satellite and to revise the satellite orbit information. The user receiver is used to receive the satellite signal and complete the analysis and calculation of the s

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http://www.trimble.com/globalTRLPAGE.asp?Nav=Collection-36339 TBC 2.80 full Install TBC 2.81 Update (from 2.70 or newer) (792425 KB)note:build Date (entitlement date) for this version is 1 October, 2012. Users with warranties the expired before this date would be able to install the this update, but they would not be able the use Licensed features. To check your warranty date, in Trimble Business Center go to help > About

Transferred from Http://hi.baidu.com/fenglinggoto/item/ab480234277d254b3075a1d9 Introduction to u-blox A-GPS Solutions GPS applications are becoming increasingly popular. Vehicle Navigation and PDA/PND portable navigation devices are widely used in the market. In addition to combining photos, audio and video playback, it also gradually enters pedestrian walking navigation from Vehicle Navigation, with more emphasis on Location-basedService,LBS), that is, the positioning function extends value-ad

GPS (global positioning system), Global Positioning System:GPS consists of three parts:1. Space:The spatial part of GPS is composed of 24 working satellites. It is located over 20 200km of the earth's surface, evenly distributed on 6 orbital planes (4 in each orbital plane), and the orbital angle is 55 °. In addition, three active backup satellites are running in orbit. The distribution of satellites allows more than four satellites to be observed anywhere and at any time in the world, and the n

Toshiba is one of the established manufacturers of Japanese laptops, and since its first notebook computer T1100 has been released for nearly 30 years, many of the classic products have left a deep impression on people. This year, a Toshiba launched by the home of the satellite l50-a has become the market users focus on products. Satellite series is Toshiba positioning in the mainstream and home entertainm

Recently in the collation of a list, by the way the country's own launch of the satellite, and cheese together to share the next ~ before we really do not know, originally we launched so many satellites it ~ DomesticSatellite Scientific detection and technical test satellites PracticeSeries The practice of a satellite, the practice of

The GPS system consists of three parts: the spatial part-GPS satellite constellation; Ground control part-ground monitoring system; User device part-GPS signal receiver. GPS satellite constellationThe GPS working satellite and its constellation are composed of 21 working satellites and 3 in-orbit standby satellites, which are recorded as (21 + 3) GPS constell

From: http://www.linuxidc.com/Linux/2011-09/42454.htm Concepts and basic classes Recently I learned GPS, so I made a GPS signal parsing tool on the Android system (HTC G7 mobile phone). The following is a summary. Thank you for your correction. Function: 1. obtained the location GPS information, including longitude and latitude, speed, and direction. 2. Satellite information, including the number of satellites, elevation angle, azimuth angle, and si

Satellites are widely used and widely available. There are space "messenger" communications satellites, space "remote sensors" Earth resources satellites, space "weather stations" meteorological satellites, Space "guide" navigation satellites, space "spy" reconnaissance satellites, space "broadcast satellites", space "altimeter" satellites, Space "clairvoyance" astronomical satellites and so on. The formation of a large "satellite family."The composit

Model Design reason: GPS provides global, around-the-clock, and real-time navigation Advantages. However, when satellite signals such as high-rise buildings, Boulevard, overpasses, and culvert tunnels are "blind spots, GPS cannot provide users with precise navigation information, especially continuous navigation information. Dr (dead-reckoning) uses a direction sensor (Gyroscope) and a speed sensor (mileage meter) to estimate the instantaneous locatio

Original site: http://www.cnblogs.com/magicboy110/archive/2010/12/09/1901669.htmlThere are many professional materials about GPS theory on the network, and this paper tries to introduce the basic principle of GPS positioning in a way that programmers can easily understand, hoping to enlighten the friends who do GPS development. Of course, this article does not involve specific development aspects of the technology.A mathematical model of GPS positioningThe first reason to introduce a mathematic

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GPS data packet Parsing After GPS power-on, data in a certain format will be returned at a certain time. The data format is:$ Information type. The characters starting with '$' are x, and X ', the information type is followed by data separated by commas.The complete data of a row is as follows:$ Gprs mc, 080655.00, A, 4546.40891, N, 12639.65641, E, 1.045, 328.42, 170809, A * 60 Information type:Gpgsv: Visible satellite informationGpgll: Location I

: $ gpgsa, statement ID, indicating the current satellite information of gps dop and active satellites (GSA)Field 1: positioning mode, a = Automatic manual 2D/3d, M = manual 2D/3DField 2: positioning type, 1 = undetermined, 2 = 2D, 3 = 3DField 3: PRN code (Pseudo-Random Noise Code), number of the satellite PRN code used by the 1st channel (00) (0 if the number of leading digits is insufficient)Field 4: PRN

on the ground. Integrated GPS Positioning requires the built-in GPS module of the mobile phone. However, this module only has the receive function and does not have the launch function. 24 GPS satellites are constantly transmitting information containing time, satellite points, and other important parameters to the earth. After receiving the information from our mobile phone, the mobile phone calculates the distance from the mobile phone to each

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satellite information of gps dop and active satellites (GSA)Field 1: positioning mode, a = Automatic manual 2D/3d, M = manual 2D/3DField 2: positioning type, 1 = undetermined, 2 = 2D, 3 = 3DField 3: PRN code (Pseudo-Random Noise Code), number of the satellite PRN code used by the 1st channel (00) (0 if the number of leading digits is insufficient)Field 4: PRN code (Pseudo-Random Noise Code), number of the

Recently engaged in GPS receivers, learn to view NMEA-0183 data protocolsCode The NMEA data is as follows:$ Gpgga, 121252.000, 3937.3032, N, 11611.6046, E, 2.0, 45.9, 5.7, M,-0000, M, * 77$ Gprs mc, 121252.000, A, 3958.3032, N, 11629.6046, E, 15.15, 359.95, 070306, A * 54$ Gpvtg, 359.95, T, M, 15.15, N, 28.0, K, A * 04$ Gpgga, 121253.000, 3937.3090, N, 11611.6057, E, 1.2, 44.6, 5.7, M,-0000, M, * 72$ Gpgsa, A, 3, 14, 15, 05, 2.1, 18, 26, 1.2, 1.7 * 3D$ Gpgsv, 84,067, 67,067, 49,312, 47,231, 30