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Satellite navigation : Technology for everyone.

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Satellite navigation

How do you get from point A to point B ? Travellers have been using compasses, maps and the stars to direct them to the point of destination. Now with a global positioning system (GPS) receiver, you can find out where you are and find your way to the destination. GPS depends on an array of satellites orbiting in the sky. There are 24 satellites involve in the global positioning system with an additional three satellite on standby should any others fail.So how the heck do you locate your position with a GPS receiver on the ground? Well, the concept here relies on timing. Each satellite has a clock and the signal is sent to you the time on your GPS receiver is slower due to the distance travelled between you and the satellite. Distance is calculated by multiplying the speed of light with the time taken to arrive at the solution of distance. This still doesn't tell you where you are. Your GPS receiver takes another reading from a second satellite which tells you how far you are from the second satellite. This again also can't tell you where you are. But by finding how far you are from the third satellite allows you to find out where you are. There will be a common point where all the distances of all the three satellites must meet and therefore provide you with the specific location.

The clocks in the both satellites and the GPS receiver must be super accurate and must be synchronized to the nanosecond. That's why atomic clocks are utilised in the satellites. You don't find these in GPS receivers because they cost too much, around $100,000. Accuracy in the GPS therefore relies on taking a fourth satellite reading which enable it to gauge the amount of inaccuracy of timing.

The atmosphere also affects the data reading as ionosphere and troposphere slows down the light electromagnetic wave energy. Another factor is the satellite signal bouncing off building which increases the time taken and give false reading. So what is the application of this technology? It can help the hiker find his way. Pilots also make use of it. Transport companies like taxis and commercial vehicles deploy this technology to keep track of movement of these vehicles for the better utillistaion of resources. Prisons may keep track of prisoners using these technology too. In the future, cars will be intelligent enough to tell the authorities where you are in a crash and to quickly attend to you in the emergency.

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High Sensitivity GPS Data Logger,W/16Mb Memory For 100,000 Way Points Record,Dual Mode For Both Data Record And Navigation.

High Sensitivity GPS Data Logger,W/16Mb Memory For 100,000 Way Points Record,Dual Mode For Both Data Record And Navigation.

Features: With 16Mb memory for 100,000 way points record. Dual mode for both Data record and Navigation. Come up with a push button for recording data manually (Push to log). User can record the data by setting the interval of time, distance and speed. The recorded data can be played as track on the Google Map. Application: Record your travels Manage business trip expenses Raise fleet efficiency ,reduce time spent at unauthorized locations Keep an eye on valuable merchandise Concerned about one's driving behavior Record Point of Interest by a push button Specifications : Category Parameter Description General Frequency L1,1575.42 MHZ C/A Code 1.023 MHZ Datum WGS84 Sensitivity Better than -158dBm Satellite Tracking Count 32 Performance Characteristic Position Accuracy Without aid=1095: 3.0m 2D-RMS <3m CEP(50%) without SA(horizontal) DGPS (WAAS, EGNOS, MSAS):2.5m Velocity Accuracy Without aid: 0.1m/s DGPS (WAAS, EGNOS, MSAS): 0.05m/s Acceleration Without aid: <4g DGPS (WAAS,EGNOS,MSAS): <4g Timing Accuracy 50 ns RMS Reacquisition Time Hot start 1s Warm start 33s Cold start 36s Sensitivity Acquisition: -144dBm Tracking: -158dBm Update 1Hz Dynamic Altitude Maximum 18,000m Velocity Maximum 515m/s Acceleration Maximum 4g Power Input Voltage Vin: DC 3.0-5.0V Power Consumption 42 mA Battery Built-in rechargeable 1000mAH Lithium battery Protocols GPS Output Data Baud rate 115200 bps, Data bit: 8, Stop bit: 1 (Default) NMEA 0183 v3.01(Default: GGA, GSA, GSV, RMC; Optional: VTG, GLL) Environment Operating Temperature -10 ~ 60 C Storage Temperature -20 ~ 60 C Charging 0 ~ 45 C BT Standard Fully compliant with Bluetooth V1.2 Output Power 0dBm (Typical), ClassII Range Up to 15 meters Bluetooth Profile Serial Port Profile(SPP) Frequency 2.4G ~ 2.4835GHz ISM Band Security Yes USB Bridge Standard Fully compliant with USB2.0 Full - speed 12Mbps Dimension   46.5 x72.2 x20 mm

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Bundle for Compact Flash GPS Receiver (PMG-270) and PocketMap Navigator (Software & Maps), Works with Any Pocket PC with a CF Card Slot

Bundle for Compact Flash GPS Receiver (PMG-270) and PocketMap Navigator (Software & Maps), Works with Any Pocket PC with a CF Card Slot

Best Positioning Accuracy in North America with WAAS! The PocketMap PMG-270 is a high precision, WAAS ready Compact Flash GPS receiver that simply plugs into your Pocket PC's Compact Flash Type I or II slot. This low power device offers top quality accuracy with signal reception from 12 satellites and positional accuracy at 3m using WAAS. With a hot start taking as little as 8 seconds and a refresh rate of 1 second, the PMG-270 will have you on your way quickly and easily. The PMG-270 works with PocketMap Navigator software. Even works great on a boat for navigating the water! Package Includes: PMG-270 Compact Flash (Type I) GPS Receiver Software & Maps User's Manual External GPS Booster Antenna What you get with PocketMap Navigator Complete Kit: State-of-the-art PocketMap GPS navigation software with dynamic voice and visual guid=1095ance for your Pocket PC using advanced Space Machine technologies. The most comprehensive U.S. digital maps from TeleAtlas covering 7 million miles of navigable roadways, enhanced with over 2 million points of interest from Space Machine. The most accurate 12-channel PMG-270 Compact Flash GPS receiver based upon SiRFstar IIe/LP chipsets with built-in WAAS demodulator that can pinpoint your location to within 3 meters. Complete car kit includes external GPS booster antenna. GPS Specifications: Technology: SiRF Star IIe/LP chip set Frequency: 1575.42 MHz (L1 band) Antenna Type: Built in active antenna Channels: 12 parallel, all-in-view Reaquisition: 0.1 seconds typical Hot Start: 8 seconds typical Warm Start: 38 seconds typical Cold Start: 45 seconds typical Horizontal: 10 meters (95% typical) Horizontal (WAAS): 3 meters (95% typical) Vertical: 1.5 times horizontal Interface Type: Compact Flash (Type I) Serial Data Format: 4800 bps, 8 bit data, 1 stop bit, no parity Position Update: Once every second Protocol: NMEA 0183 version 2.20 Operating Voltage: 3.3V DC +/- 10% Operating Current: 80mA max Dimensions: 91mm x 50mm x 20mm Software + GPS Receiver = Amazing Bundle at a Fantastic Price!

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PocketMap Navigator Auto GPS Kit for Pocket PC

PocketMap Navigator Auto GPS Kit for Pocket PC

Turn your Pocket PC into state-of-the-art in-vehicle navigation system with this complete GPS kit from Space Machine! The GPS receiver tracks up to 12 satellites in parallel with best reception on the car dashboard. A Y-cable car charger/adapter plugs into the car's cigarette light adapter to power the GPS receiver while charging your Pocket PC simultaneously. Our unique in-vehicle tab-style vent mount kit holds your Pocket PC in place near the air vent. You will hear turn-by-turn voice instructions that guid=1095e you to your destination and see your location displayed on a moving map as you drive. GPS navigation has never been this easy! A Great Value! A unique Y-cable Assembly for the PMG-200 is available for the following Pocket PC models: Dell Axim X5 Series HP iPAQ 3600/3700 Series HP iPAQ 3800/3900 Series HP iPAQ 5400 Series Toshiba e740/e750 Series Toshiba e310/e330/e335 Series Cassio Cassiopeia E-200 Viewsonic V35 HP Jornada 560 Series T-Mobile Pocket PC Phone O2 XDA Pocket PC Phone AT&T Siemens SX56 Siemens Pocket LOOX Please make sure you choose the proper Pocket PC before adding to cart, as the GPS receiver will be shipped with a special Y-cable car charger/adapter specifically designed for the Pocket PC you choose. Package Included: PMG-200 In-Vehicle GPS Receiver/Antenna Navigator Software & USA Maps User's Manual 12V Y-Cable Car Charger/Adapter for Pocket PC & Universal Vent Mount Kit Features: Builds on SiRF Star II chipset with embedded ARM7TDMI CPU available for customized applications in firmware. 12 parallel satellite-tracking channels for fast acquisition and reacquisition. High speed signal acquisition using 1920 time/frequency search channels. Built-in hardware Tracking Loop Processor WAAS/EGNOS Demodulator and NDGPS/U.S. Coast Guard Beacon support. Low power consumption. Built-in rechargeable battery for memory and RTC backup and for fast Time to First Fix (TTFF). Support NMEA0183 v2.2 data protocol. Enhanced algorithms provide superior navigation performance in urban, canyon and foliage environments. For Car Navigation, Marine Navigation, Fleet Management, AVL and Location-Based Services, Auto Pilot, Personal Navigation or touring devices, Tracking devices/systems. GPS Specifications: Technology: SiRF Star IIe chip set Min Sgnl tracked: -175dBW Antenna Type: Built in Patch Antenna Channels: 12 parallel, all-in-view Reaquisition: 0.1 sec. averaged Hot Start: 8 sec. averaged Warm Start: 38 sec. averaged Cold Start: 45 sec. averaged Horizontal (WAAS): Vertical: Power: Position Update: Once every second Serial Data Format: 4800 bps, 8 bit data, 1 stop bit, no parity Protocol: NMEA 0183 version 2.20 Altitude: 60,000 feet max Velocity: 515 meters/second Dimensions: 66mm x 51mm x 22.5mm

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NEW! Leadtek GPS (Global Positioning System)  for Notebook Computers (USB)

NEW! Leadtek GPS (Global Positioning System) for Notebook Computers (USB)

The Leadtek GPS-9532 is a small, light weight and portable ready to use high performance GPS antenna. This useful antenna can be configured to work with a verity of handheld PC, notebook, pocket PC , Palm devices or specialized systems. Leadtek commitment to GPS technology products is supported by dedicated FAE services and onsite hardware engineering. This also creates the ability within Leadtek to configure and engineer a device according to your particular product specification and requirements. Characteristics Chipset  SiRFStarII Electrical Power 5.0 +-5%V DC input Power Available 0.85W @5.0V DC w/passive antenna Connector Available Universal connector available for different PDA/Pocket PC/Smart Phone Backup Power Rechargeable 3V lithium battery Dimension 2.56in(L)X2.24in(W)X0.87in(H) 76.2mm(L)X66.04mm(W)X2.54mm(H) Trickle Power 165mW Interface Serial Port Universal connector (RJ11) Baud Rate 4,800 to 38,400 bps adhystavke Input Messages NMEA/SiRF Binary Set altitude, position, date&time, select output messages and rates Output Messages SiRF Binary plus proprietary messages NMEA-0183 v2.0 GGA, GSA, GSV, RMC, VTG, GLL Firmware Upgrade Flash EPROM field programming software available Time Mark Output 1 pulse/sec, aligned with GPS time ± 1 µ sec Antenna Embedded passive antenna Environmental Operating Temp -40 °C to +85 °C Safe Storage Temp -55 °C to +100 °C Relative Humid=1095ity 5% to 95%, non-condensing Mechanical Cable Length PDA connector to RJ11: 88cm Junction point to cigar lighter: 35.5cm Smart Antenna to RJ11 connector: 150cm Mounting Magnet base Housing Water-resistant plastic Performance General Tracking channel 12 L1 Frequency 1575.42MHz C/A code Acquisition Time Cold Start 45 sec typical TTFF Warm Start 38 sec typical TTFF, with current almanac, position and time Hot Start 8 sec typical TTFF, with current almanac, position, time and ephemeris Reacquisition Time General 0.1 sec Max Blockage up to 30 sec Position Accuracy 10m, 2D, without SA imposed 100m, 2D RMS, with SA imposed  DGPS Accuracy <5m (50%) Dynamics Velocity 515 m/s (1,000 knots) Max Acceleration <4g Altitude 18,00m (60,000 ft) Max.

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Solar Energy Bluetooth GPS Data Logger,W/ 8Mb Serial Flash, Up To 50,000 Way Points,Dual Power (Battery + Solar Energy)

Solar Energy Bluetooth GPS Data Logger,W/ 8Mb Serial Flash, Up To 50,000 Way Points,Dual Power (Battery + Solar Energy)

This BT GPS logger features an all in one, cost effective portable GPS logging solution. With its on-board memory, it allows you to log your route. Through user friendly utility, it shows your track on Google Earth. Thanks to the Solar energy the receiver can be used for more than 100 hours in full operation or permanent in standby mode. Features: w/ 8Mb serial Flash, up to 50,000 way points Dual power ( Battery + Solar Energy) More than 100 hrs operating time in direct sun Permanent in standby mode in direct sun Bluetooth GPS with 32 channels Ultra high sensitivity up to -158 dBm (Tracking) Smart Power Save Mechanism (Transystem Patent Pending) Fuzzy Auto On/Off (Transystem Patent Pending) Application: Record your travels Manage business trip expenses Raise fleet efficiency Keep an eye on valuable merchandise Concerned about one's driving behavior Specifications : Category Parameter Description General Frequency L1, 1575.42 MHz C/A Code 1.023 MHz chip rate Channels 32 CH for tracking Antenna Built-in patch with LNA Datum WGS-84 Acquisition Cold start 36 sec, average Warm start 33 sec, average Hot start <1 sec, average Reacquisition <18,000m Dynamic Altitude <515m/sec Velocity 4g max. Acceleration NMEA-0183 (V3.01) ?C GGA, GSA, GSV, RMC (default) GLL, VTG (optional) Protocol GPS Output Data bit : 8, stop bit : 1(Default) Interface Bluetooth Version 1.2 compliant Output Power Class 2 (10 meter in free space) Frequency 2.4 to 2.48 GHz Power Battery Rechargeable 1000mAh Lithium battery Current 25mA without Solar Panel Work Hours 40hrs without Solar Panel;100+ hrs with Solar Panel Standby Time Permanent in direct sun DC Input 3.2-4.5V Power Charge Mini USB Physical Dimensions 80 x 61 x 25 mm Others Certification CE / FCC LED Bluetooth, Navigation, Battery / changer status

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Gps Afloat

Gps Afloat

Fun With Gps

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

Hacking Gps

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

Garmin GPSMAP-440S GPS with Transducer

Never be lost again with a Garmin GPSMAP-440 GPS System Sleek chartplotter offers big capability in a small package Navigation system features an ultra-bright 4-inch QVGA display

Gps Made Easy

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

JVC GPS-capable In-dash Entertainment Center

A one-stop, get-it-all-right-here multimedia entertainment system Includes GPS, car stereo, DVD player and radio in a sleek, in-dash package Fits any automotive decor

Gps Waypoints of Colorado`s Fourteeners

Gps Waypoints of Colorado`s Fourteeners

Garmin Nuvi 250 GPS Navigation System

Never get lost again with a Garmin Nuvi 250 GPS Navigation System Simple navigation at an affordable price Personal Travel Assistant comes with preloaded maps for North America and Europe

Garmin GPSMAP-440 GPS System

Never be lost again with a Garmin GPSMAP-440 GPS System Sleek chartplotter offers big capability in a small package Navigation system features an ultra-bright 4-inch QVGA display

Outdoor Guide to Using Your Gps

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

The Gps Handbook

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

Garmin Nuvi 650 GPS Navigation System

Never get lost again with a Garmin Nuvi 650 GPS Navigation System Widescreen navigation at a price that won't break your budget Personal Travel Assistant comes with Bluetooth wireless technology

Gps Satellite Surveying

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

Coastal Navigation Using Gps

Description not available. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.

Garmin GPSMAP-430S With Transducer

Never be lost again with a Garmin GPS MAP-430 GPS System Location finder for mariners with a keen eye for value Sleek chartplotter offers big capability in a small package

Enjoy your Satellite navigation!

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