North finding is by measuring the angular velocity of the earth’s rotation, it can independently determine the true north direction value of the attached carrier, without being interfered or affected by external magnetic fields or other environments. In addition, it can also be used to measure and correct horizontal angles in combination with acceleration.
(If you have questions about true north, you can watch this video)
For finding true north, there also have other ways.
There is a fixed relationship between time and position on Earth that shows up in a number of ways. Navigation, Surveying, Gyroscopes , Astronomy as well as North Finding are all interrelated.
Some crude ways are to use an analog wrist watch and point the minute hand to the Sun and then a North-South line is half way between the minute hand and 12:00, this is called the Boy Scout method. Or that moss grows on the North side of tree trunks.
Following are some more accurate ways.
Using a north finder，it is parallel to the Earth's axis of rotation, the gyroscope will be stable, but if the gyro axis is slightly off, it will precess. In this way, north can be determined with high accuracy using a north seeker, which essentially maintains an azimuth drift over time.
Therefore, it is important to choose an accurate north finder，there is a north finder with widely praising.
ER-FNS-02 High Precision FOG North Seeker (0.02°-0.1°) is mainly composed of closed-loop FOG, inertial measurement unit, digital signal processing unit and the mechanical part. It provides high precision true north azimuth information to carriers.
If you have any opinions about north seeker, welcome to leave your comments and share with your friends.
If you want to know more about the North seeker devices, you can learn more here：
Low Cost 3 Axis FOG North Seeker Supplier - ERICCO China
Ericco's Low Cost FOG gyro North Seeker adopts closed-loop fiber optic gyroscope as the core component, it's widely used in coal mining......
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High Precision FOG North Seeker Provider - ERICCO China
Ericco is specialized in research & produce different accuracy FOG north seeker for seeking true north azimuth angle, can be used in many field
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North Seeker Factory - Ericco China
Ericco is China specialized north seeker supplier and provides high quality and low cost standard and customized north seeking systems to the customer
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