A positioning device and method based on gravitational field measurement

Abstract

In order to solve the problem that existing autonomous positioning navigation depends on external signals, the invention provides a positioning device and method which are based on gravitational fieldmeasurement, do not depend on wireless electric signals, are not affected by other external interference and can be applied to the application filed of satellite navigation positioning and deep-spacedeep-sea navigation positioning. According to the positioning device and method based on gravitational field measurement, a first standard clock and a second standard clock are located at the to-be-positioned positions, and the frequency signal changes of the first standard clock and the second standard clock have the mutually complemented change rates in a Riemannian space or an equivalent gravitational field; an I-path difference frequency signal I(t), a Q-path difference frequency signal Q(t) and a reference clock f<0> are extracted from the frequency signal output by the first standard clock and the frequency signal output by the second standard clock; and the frequency changes delta f of the first standard clock and the second standard clock are obtained according to the I-path difference frequency signal I(t) and the Q-path difference frequency signal Q(t), then the radius r of the gravitational field is obtained according to the formula (please see the specifications for the formula), positioning navigation is conducted according to the radius r, and 2 m represents the Schwarzschild radius.

Description

technical field [0001] The invention relates to a positioning device and method, in particular to a positioning device and method based on gravitational field measurement, which can be applied in the application fields of satellite navigation and positioning and deep space and deep sea navigation and positioning. Background technique [0002] Satellite or submarine autonomous navigation has extremely important engineering application value and strategic research significance. It can not only reduce the workload of the ground measurement and control system or command system, but also reduce the dependence of satellites or submarines on the command measurement and control system, and increase the anti-jamming and autonomy of the system. viability. [0003] The existing autonomous navigation mostly adopts the GPS navigation system, which relies on radio signals and is susceptible to external interference. Contents of the invention [0004] The purpose of the present inventio...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing autonomous positioning and navigation relies on external signals. The present invention provides a positioning device and method based on gravitational field measurement that does not depend on radio signals and is free from other external interference.

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