Gyro north finder is also called the gyro compass, using the gyro principle under the speed in the local water of the earth from the angle of projection direction (that is, the true north) of a kind of inertial measurement system. Its north process without external reference. In addition to being limited by the high latitudes, it finds north measurement is not affected by the weather, day and night time, the influence of the magnetic field and site visibility conditions. Gyro north finder is a precision inertial measurement instruments, usually it is used in artillery, missiles and maneuvering weapon systems such as ground radar azimuth reference. Depending on the type of gyro, gyro north finder found can be divided into two degrees of freedom gyro as the earth's rotation sensor for north instrument (such as suspension pendulum gyro north finder), in uniaxial rate gyro sensor for north discussion (such as strapdown gyroscope north finder) and platform for the system. The vibration of the gyro north finder found on environmental interference (especially for low frequency vibration interference) is very sensitive. As one of the high-precision north finder, the ER-FNS-01 high-performance Dynamic FOG North Finder consists of a high-precision, rugged solid fiber optic gyroscope, quartz accelerometer, data acquisition and processing unit. The north finding accuracy can reach 0.02°secψ-0.5°secψ, which can provide the true north position information when the object is in motion. According to the use environment, the high precision gyro north finder can be divided into three kinds: ground north finder installation, airborne gyro north finder button and Marine base gyro north finder.According to use environment, high precision gyro north finder can be divided into the ground found erection for north finder, onboard gyro north finder button, found Marine base gyro north finder found 3 kinds.
Global Positioning System is a high-precision radio navigation positioning system based on artificial Earth satellites. It can provide accurate geographical position, vehicle speed and accurate time information anywhere in the world and in near-earth space. GPS is a new generation of satellite navigation and positioning system developed by the United States from the 1970s, which lasted 20 years and cost 20 billion US dollars, and was fully completed in 1994. It has a full range of real-time three-dimensional navigation and positioning functions on sea, land and air.
The Beidou Navigation Satellite System is a global satellite navigation and positioning system independently developed, deployed and operated by China. It consists of a series of satellites, ground control and user terminals that provide highly accurate and reliable positioning, navigation and time services to users around the world. The BDS has been constructed and developed in three phases, with significant achievements already made, and the third phase is currently under construction. The Beidou navigation satellite system is used in a wide range of fields, including transportation, aerospace, Marine fisheries, geological exploration, and disaster warning and rescue. The system has the characteristics of multiple satellites working at the same time, multi-frequency band, multi-signal system, etc.,which can provide higher positioning accuracy and anti-interference ability. It is compatible with other navigation satellite systems and realizes the interoperability of global navigation satellite systems
Gyro with GPS/BD satellite navigation system and receiver are combined, which can improve the orientation precision, greatly shorten the time orientation, but also it can greatly reduce the precision of required to achieve the same precision. It has obvious price advantage.
More Technical Questions
1.How to Use Acquisition Software of MEMS North Seeker
2.What is the System Structure of FOG North Finder
3.How to Use Acquisition Software of FOG North Seeker
4.What is the Device Interface Definition of FOG North Seeker
5.What Performance is the Accelerometer Sensor in FOG North Finder
6.What is the Device Interface Definition of MEMS North Seeker
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