High-precision GPS satellite clock for gravity data recording

Abstract

A high-accuracy GPS satellite lock for recording gravitation data is composed of receiving antenna, GPS-OEM board, control processor, driver, character display, parallel port, dial, storage, communication interface and keyboard. Its advantages include simple structure, high precision, real-time positioning and timing functions, and low power consumption.

Description

technical field [0001] The invention relates to a GPS satellite clock, in particular to a GPS satellite clock used in a gravity data recording system, which can be widely used in surveying, earthquake, exploration and other departments. Background technique [0002] Gravity measurement can not only be used to study the earth's gravitational field and the shape of the earth, but also has been widely used in geophysical exploration, and has become an irreplaceable important means of mineral, oil and gas, geothermal, and groundwater resource exploration. [0003] As the terminal of the gravimeter, the gravity recording system undertakes the task of recording the output signal of the gravimeter in analog or digital way. The analog method is to draw the curve of gravity changing with time through the long chart recorder; the digital method is to collect and store the gravity data in digital form through the computer. The current gravity recording system, no matter what method it...

AI Technical Summary

Problems solved by technology

[0004] ①The configured time device has low precision and cannot meet the requirements of today's gravity measurement development

This is difficult to do for the current gravity recording system that configures the system clock independently

[0006] ③The current gravity recording system, because the configured time device adopts manual time setting method, not only the operation process is cumbersome, but also the error is large, which cannot meet the requirements of gravity observation

[0007] ④ It does not have the ability to display and output three-dimensional position information in real time, which is not conducive to field mobile gravity measurement

[0008] ⑤It does not have the ability to display the GMT date, time and Beijing time in real time at the same time, which is very inconvenient to use

[0009] ⑥It cannot automatically output timing time stamps according to the time interval settings made by the user, and cannot be applied to various timing control occasions such as long-graph analog records

[0010] ⑦ It cannot provide users with accurate second signals, and cannot be applied to precise time service occasions, so its application range is limited

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