Method for measuring rotational angular velocity of earth by using pendulous gyroscope
A technology of earth rotation and gyroscope, applied in the fields of inertial navigation, geophysics, and geodesy, which can solve the problems of long observation data cycle, expensive equipment, and complicated data post-processing process.
Active Publication Date: 2011-01-05
CHANGAN UNIV
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Problems solved by technology
[0003] Since the 1970s, people have used a variety of observation technologies to measure the angular velocity of the earth's rotation, such as VLBI technology, SLR technology, and GPS technology. Most of these technologies require a large-scale ground-air joint measurement, and the required equipment is expensive. , and the observation data acquisition period is long, and the data post-processing process is complicated
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[0025] A method for measuring the angular velocity of the earth's rotation by using a pendulum gyroscope, which specifically includes the following steps:
[0026] Step 1, place the pendulum gyroscope at a certain station;
[0027] like figure 1 As shown, the pendulum gyroscope includes an outer casing 2, a suspension belt 3, a gyro motor room 4, a gyro motor 5, and a gyro shaft 14; the upper end of the suspension belt 3 is connected to the center just above the interior of the outer casing 2, and the suspension The lower end of the belt 3 is connected with the gyro motor room 4, the gyro motor room 4 is suspended inside the outer casing 2 through the suspension belt 3, and the gyro motor room 4 is built with the gyro motor 5, and the gyro motor 5 passes through the gyro motor shaft. 14 is connected with the gyro motor room 4; the outer casing 2 is provided with a north direction mark 1, and the marked direction of the north direction mark 1 is the forward direction pointed ...
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The invention discloses a method for measuring rotational angular velocity of the earth by using a pendulous gyroscope. The method particularly comprises the following steps of: 1, arranging the pendulous gyroscope at a station point; 2, measuring an oscillation period T of the pendulous gyroscope; 3, measuring the geographic latitude phi of the station point; and 4, calculating the rotational angular velocity of the earth omega e by an external computer according to the obtained oscillation period T of the pendulous gyroscope and the geographic latitude phi of the station point. The method of the invention has the advantages of simplicity and practicability, no need of wide-range combined ground and airborne measurement, capability of independently measuring the rotational angular velocity of the earth, high subsequent data processing speed and capability of monitoring the variation in the rotational angular velocity of the earth in real time.
Description
technical field [0001] The invention belongs to the technical fields of geophysics, geodesy and inertial navigation, and in particular relates to a method for measuring the angular velocity of the earth's rotation, in particular to a method for measuring the angular velocity of the earth's rotation using a pendulum gyroscope. The invention can be widely used in the fields of aviation, aerospace, global plate motion monitoring, deep space exploration research and the like. Background technique [0002] Due to the uneven distribution of material flow in the earth itself, the angular velocity of its rotation keeps changing slightly, and the change of the angular velocity of the earth also causes the change of the daily day length. The research of aviation, aerospace and geophysics has important practical significance and application value. [0003] Since the 1970s, people have used a variety of observation techniques to measure the angular velocity of the earth's rotation, suc...
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Login to View More IPC IPC(8): G01P9/00G01C19/02
Inventor 杨志强石震王腾军姜刚
Owner CHANGAN UNIV