Method for determining dynamic accelerated speed of carrier precisely

A dynamic acceleration and high-precision technology, applied in speed/acceleration/shock measurement, acceleration measurement, gravitational field measurement, etc., can solve problems such as difficult to establish a reference station that meets the differential measurement conditions

Active Publication Date: 2014-01-22
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

In order to solve the problem that it is difficult to establish a reference station that meets the differential measurement conditions in the marine environment, a new technical solution is needed to measure the dynamic acceleration of the carrier

Method used

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  • Method for determining dynamic accelerated speed of carrier precisely
  • Method for determining dynamic accelerated speed of carrier precisely
  • Method for determining dynamic accelerated speed of carrier precisely

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Embodiment Construction

[0063] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] When airborne gravity measurement is carried out on the survey area, the present invention adopts the observation information of the satellite navigation receiver fixedly installed on the airborne gravity measurement carrier, and directly solves the dynamic acceleration of the carrier through the data processing unit, thus avoiding the error of the navigation system The problem of baseline distance accumulation; at the same time, because no reference station is needed, the scheme of the present invention can be applied in aerial gravity measurement in any survey area.

[0065] The above-mentioned satellite navigation systems include but are not limited to the global satellite navigation system (GPS) of the United States, the GLONASS satellite navigation system of Russia, the Beidou satellite navigation system of China, the Galil...

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Abstract

The invention discloses a method for determining a dynamic accelerated speed of a carrier precisely. A satellite navigation receiver is fixedly connected to and mounted on the airborne gravity measurement carrier, and the dynamic accelerated speed of a carrier is directly calculated through observation information of the satellite navigation receiver. The method has the advantages as follows: the accuracy is high, no base station is required to be matched with the method, the operation is simple, the application range is wide, and the like.

Description

technical field [0001] The invention mainly relates to the technical field of aviation gravity measurement, in particular to a method for determining the dynamic acceleration of a carrier with high precision. Background technique [0002] Aeronautical gravity measurement is one of the important means to obtain near-Earth gravity field information, and determining the dynamic acceleration parameters of the carrier itself is the premise and key to realize high-precision gravity extraction. At present, the high-precision estimation of carrier dynamic acceleration based on the global satellite navigation system is one of the main means, but because the satellite navigation signal is easily affected by error sources such as ionospheric delay error, tropospheric delay error, and satellite orbit error, the estimation accuracy will decrease. will be subject to certain restrictions. In order to improve the estimation accuracy, the time-space correlation characteristics of the error ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V7/00G01P15/00
Inventor 张开东李显吴美平
Owner NAT UNIV OF DEFENSE TECH
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