This product can determine the azimuth of the target or the prism which installed on the instrument without the help of the surveying point. There is no special installation deviation requirement before north seeking and it can determine high accuracy true north in all installation direction. This instrument can be used in the field of subway surveying or construction, coal mine surveying, tunnel construction, etc.

  NF7000-A series is the north finder which is used for ship borne orientation and there is no external reference input, making the environment very complex. The satellite (GPS or Beidou) north finder is not suitable for this situation. And shipborne navigation requires precise navigation in three-dimensional space. When sailing at sea, the ship is affected by various factors such as wind, waves, and ocean currents, and faces multidimensional movements including roll, pitch, and yaw, resulting in significant sway and angular motion of the hull.    

NF3000 series is based on high-precision fiber optic gyroscope and quartz accelerometer as core components, mainly composed of inertial measurement unit, data acquisition and processing unit, precision indexing mechanism, and control display unit. At the same time, according to the usage characteristics, GPS/GNSS/BD receiver, odometer sensor, altimeter, star sensor and other components can be added to provide the azimuth angle between the carrier and true north, as well as the motion attitude, velocity and position information of the carrier.

NF2000 series is based on a closed-loop fiber optic gyroscope as the core component, and it consists of an inertial measurement unit, a digital signal processing unit, and a mechanical mechanism. It can simultaneously provide the azimuth angle between the carrier and true north, as well as the motion attitude, velocity, and position information of the carrier. Main applications: coal mining, oil drilling, tunnel construction, and geodesy. It is also used for static initial alignment and direction control of missile launch, weapon targeting, radar, antennas, vehicles, and other objects.

The NF1000 MEMS inertial north finder is a strapdown north finding solution composed of high-performance MEMS gyroscope and MEMS accelerometer, which can directly measure wellbore inclination angle and tool face angle. The three-axis MEMS gyroscope is sensitive to the angular motion of the carrier, and the three-axis MEMS accelerometer is sensitive to the linear acceleration of the carrier. The module internally compensates for the zero position, scale factor, non-orthogonal error, and acceleration related terms of all temperature parameters, which can maintain high measurement accuracy for a long time.