How much do you know about the specific interpretation of the orientation of Kanyu?

in the theory of geomancy, if you want to have a clear understanding of the orientation of geomancy, you need to use a tool system to accurately determine the geolocation. What are the main geolocation systems? How to evaluate it in geomantic science? Let's take a look at some positioning methods that have emerged since ancient times. Let's see what practical and useful systems can help us see the characteristics of the landscape.

1: Sun Scene Positioning System

Before the invention of the compass, people used the sun scene to locate it in ancient times. The tool for measuring the sun scene was Sun Gui. At noon local time, the sun scene pointed to the direction due south and north of the earth.

2: Star Positioning System

In hundreds of thousands of years, the position of the Big Dipper is very close to the orientation of the North Pole of the Earth, so the square of the earth can be determined by taking the Big Dipper as a reference.

III: Geomagnetic Positioning System

The earth is a huge magnetic field with relatively stable characteristics. Geomagnetic positioning is to determine the magnetic orientation of the ground plane by using the principle of homopolar repulsion and heteropolar attraction between the magnetic needle and the earth's magnetic field. Geomagnetic positioning instruments include compass, theodolite and electronic compass. The compass used in geomancy is actually a kind of compass. Its advantage is that it can directly measure the magnetic azimuth. Theodolite is a precise angle measuring instrument, and the compass is needed to determine the initial azimuth when measuring the square position with theodolite. All geomagnetic measuring and positioning instruments are easily disturbed by magnetic substances and influenced by abnormal changes of the earth's magnetic field. Since the advent of the compass, the orientation used in geomancy has been based on the magnetic orientation.

4: Gyroscope positioning system

uses the principle that the gyro rotates at high speed and its central axis will never change direction to measure the relative orientation. It does not depend on magnetic field for positioning, and has the highest measurement accuracy, so it can be used in all occasions. The positioning system of spacecraft, supersonic aircraft and missiles is gyroscope. Disadvantages are high price, high maintenance cost, and it can only be used to measure magnetic azimuth by using the standard magnetic azimuth calibration at the measuring location.

five: satellite positioning system

determines the position of the same place on the earth by comparing the measurements of several satellites (usually three) at the same time. Although the satellite locator is powerful, the measurement accuracy of the current satellite locator is not very high. It can't be used for high-precision measurement, and of course it can't be used for geomancy.

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