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Air pressure height estimation method for segmented correction

A barometric altitude and altitude technology, applied in the field of aircraft control, can solve problems such as difficult aircraft control, large random errors in GPS altitude information, etc., to achieve the effect of overcoming random errors and meeting the needs of use

Active Publication Date: 2020-07-10
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

With the change of altitude, the error range of GPS altitude information will not change greatly, but due to the influence of various factors, GPS altitude information has large random errors, and it is difficult to directly use it for aircraft control

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  • Air pressure height estimation method for segmented correction

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[0022] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 As shown, this embodiment provides a method for estimating barometric altitude with segmental correction, based on the fusion of GPS altitude information obtained by GPS equipment and atmospheric pressure data obtained by gas pressure sensors, for two devices equipped with GPS equipment and gas pressure sensors The system provides barometric altitude information that meets the needs of use when moving in a large altitude range.

[0024] Specifically, this embodiment includes the following steps:

[0025] S1. For aircraft systems equipped with GPS equipment and gas pressure sensor...

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Abstract

The invention provides an air pressure height estimation method for segmented correction. GPS height information obtained by GPS equipment and atmospheric pressure obtained by a gas pressure sensor are fused, and fitting is performed through real-time GPS height data and atmospheric pressure height data in segmented intervals to obtain a feed-forward correction formula of the real-time atmosphericpressure height information. On the basis, the corrected air pressure height is calculated according to a correction formula, and a feedback correction error is calculated according to GPS height data, so that a complete air pressure height correction formula is obtained. Through segmented air pressure height correction, accurate air pressure height information is provided for a system moving ina large height range in real time.

Description

technical field [0001] The invention belongs to the technical field of aircraft control, and in particular relates to a method for estimating barometric altitude with segment correction. Background technique [0002] The basic function of the aircraft control system is to ensure the stable attitude of the aircraft through a certain control algorithm according to certain index requirements, and guide the aircraft to the desired position through a given control strategy to complete the established flight mission. At the same time, during the flight, the information exchange between the aircraft and the ground control station is realized. In the aircraft control system, one of the main control objects is the altitude of the aircraft. In order to meet the requirements of specific flight missions and achieve accurate altitude control, the aircraft control system must first be able to obtain information that reflects the current altitude of the aircraft. [0003] Currently, airc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/06G01C5/00G01S19/14
CPCG01C5/005G01C5/06G01S19/14
Inventor 陈清阳鲁亚飞贾高伟王玉杰王鹏辛宏博唐钟南
Owner NAT UNIV OF DEFENSE TECH
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