what is a North Finder

A north finderhttps://www.ericcointernational.com/inf … inder.html is a type of compass that is used to find the true north value of a certain position. Gyro North finder, also known as gyro compass, is an inertial measurement system that uses gyro principle to determine the projection direction of the Earth’s rotation rate in the local horizontal plane (that is, true north position). Its north finding process requires no external reference. In addition to being limited by high latitude, its north finding survey is not affected by weather, day and night time, geomagnetic field and site visibility conditions.
Gyroscope north finder can be divided into the following three types:
A north finder using a two-degree-of-freedom gyroscope as an Earth rotation sensor (e.g. a pendulous gyro north finder)
A north finder using a single-axis rate gyroscope as a sensor (e.g., strap down gyroscope north finder)
Platform north finding system

As a key technology of navigation system, The low-cost 3-axis FOG North finder ER-NFS-03https://www.ericcointernational.com/nor … ining.html  consists of an inertial measurement unit (IMU), a digital signal processing unit, and a mechanical component mechanism. It can provide true north azimuth for the carrier north-seeking technology is not only widely used in satellite, missile, artillery, ship inertial navigation and other fields, known as attitude measurement and national defense high-tech field, but also in geophysical exploration, coal mining, Geodetic surveying and other fields are also widely used. North finder is one of the important equipments using north-seeking technology, and it has also become a necessary measurement method.
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