Introduction
Thank you for choosing this unique and exquisite handheld GPS receiver. The Polaris is
designed as an aid for outdoor activities like hunting, camping, hiking or other undertakings
which involve positioning. Equipped with it on travel, you are informed with your current
geographic position, direction leading to your destination, compass, distance passed,
speed, temperature, local and GMT time. Before clutching it in hand when you can't resist
the temptation of ousting, please go through the user manual, and you can go through the
world without getting lost. The user manual will introduce you to the functions and features
of the Polaris, and acquaint you with the procedures of how to use it.
Polaris Main Features
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The
Polaris has 12 channels and a built-in GPS patch antenna, making it possible to track
12 satellites simultaneously and offer reliable positioning information.
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Integrated into this compact device is also a magneto-impedance censor, replacing
traditional mechanical compass while allowing the system to combine GPS data with
bearing of the digital compass to guide user in proper direction, either toward his destination
or back to his starting point.
- A large vivid graphic LCD, divided into different data fields, conveys detailed
environmental and geographic information to user on a single glimpse. Five user-buttons
are located on both side respectively, enabling owner to operate with ease.
- A temperature sensor is applied to provide extra and immediate source of information.
In addition, a microcontroller-based charging technique is also employed here to secure
a fast and safe battery recharge process.
- The Polaris is a very mechanically compact design, which makes it waterproof and,
thanks to inner suspensory structure, shockproof too. Another considerate feature is its
multi-portability, user can hold in hand, hang from neck or hook to clothes.
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Glossary
Acquisition Time
The time it take a GPS receiver to acquire satellite signal and calculate the initial position.
GPS
The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24
satellites. GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to
the earth. GPS receivers take this information and compares the time a signal was transmitted by a satellite
with the time it was received. The time difference indicate how far away the satellite is. With distance
measurements from a few more satellites, the receiver can determine the user's position. GPS receiver must be
locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track
movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude,
longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other
information, such as speed, bearing, track, trip distance, distance to destination.
Almanac Date
Information transmitted by each satellite on the orbits and state (health) of every satellite in the GPS
constellation. Almanac data allows the GPS receiver to rapidly acquire satellites shortly after it is turned on.
Altitude
The elevation of a certain geographic location.
Azimuth
See compass bearing.
C/A Code (Coarse/Acquisition Code)
The standard positioning signal the GPS satellite transmits to the civilian user. It contains the information the
GPS receiver uses to fix its position
And time, and is accurate to 100 meters or better
CEP
Circular Error Probability,
Cold Start
The power-on sequence where the GPS receiver downloads almanac data before establishing a position fix.
Compass Bearing
The direction to the magnetic north of digital compass.
Coordinates
A set of numbers that describes your location on or above the earth. Coordinates are typically based on
latitude/longitude lines of reference or a global/regional grid projection.
Coordinated Universal Time (UTC)
Replaced Greenwich Mean Time (GMT) as the world standard for time in 1986. UTC uses atomic clock
measurements to add or omit leap seconds each year to compensate for changes in the rotation of the earth
Current Point
User's current location which will be marked as a waypoint
Deviation Angle
A signed value which depict the degrees user's traveling off desired course when navigating. If user departs
from the desired course to its right side, a negative angle will appear; if user departs from the desired course to
its left side, a positive angle will appear.
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POLARIS USER MANUAL
POLARIS USER MANUAL