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Airborne photoelectric high-precision passive positioning method suitable for sea surface target

A passive positioning, high-precision technology, applied in ground navigation, navigation through speed/acceleration measurement, navigation and other directions, can solve problems such as large application limitations, achieve small application limitations, reduce weight, positioning design and implementation simple method effect

Pending Publication Date: 2019-11-22
西安应用光学研究所
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  • Application Information

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Problems solved by technology

With such a passive positioning method, the target to be positioned is a stationary target, and the application limitations are relatively large

Method used

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  • Airborne photoelectric high-precision passive positioning method suitable for sea surface target
  • Airborne photoelectric high-precision passive positioning method suitable for sea surface target
  • Airborne photoelectric high-precision passive positioning method suitable for sea surface target

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] The invention provides an airborne photoelectric high-precision passive positioning method suitable for sea targets, comprising the following steps:

[0022] 1) Input parameters required for initialization, including aircraft longitude L, aircraft latitude B, aircraft altitude H, aircraft true heading θ, aircraft pitch angle ε, aircraft roll angle γ, photoelectric pod aiming line azimuth Corner T x , Elevation angle T of the aiming line of the photoelectric pod y , target horizontal pixel deviation σ x , target vertical pixel deviation σ y , video image horizontal resolution R x , Video image vertical resolution R y , Video image horizontal field of view V x , Video image vertical viewing angle V y .

[0023] 2) Calculate the pitch angle α of th...

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Abstract

The invention discloses an airborne photoelectric high-precision passive positioning method suitable for a sea surface target and relates to the technical field of airborne photoelectric passive detection and positioning. The method comprises eight steps of: 1, initializing parameters measured by a sensor; 2, calculating a sea surface target azimuth angle and a sea surface target pitch angle; 3, calculating coordinate coefficient vectors (XA ', YA', ZA ') of a sea surface target under an aerial carrier body coordinate system; 4, calculating coordinate coefficient vectors (Cx1, Cy1, Cz1) of thesea surface target under the northeast sky coordinate system; 5, calculating coordinates (XP, YP, ZP) of a projection point of a aerial carrier centroid on the sea surface under a geocentric rectangular coordinate system; 6, calculating a distance between the sea surface target and a photoelectric pod; 7, calculating coordinates (Xd, Yd, Zd) of the sea surface target under the geocentric rectangular coordinate system; and 8, calculating geodetic coordinates of the sea surface target. Through the above eight steps, the high-precision passive positioning technology of airborne photoelectricityto the sea surface target is realized.

Description

technical field [0001] The invention relates to the technical field of airborne photoelectric passive detection and positioning, in particular to an airborne photoelectric high-precision passive positioning method suitable for sea surface targets. Background technique [0002] In recent years, as the exploration and exploitation of marine resources in various countries have gradually moved from near-land and shallow seas to deep-sea and deep-sea oceans, bringing people huge profits, but also deriving various risks of collisions and conflicts. Facing the increasingly urgent and severe coastal defense situation, In order to better detect, identify, track and locate ships, warships and other water craft that break into my country's territorial waters, more and more people pay attention to airborne photoelectric detection and positioning equipment and positioning technology theory, and gradually penetrate into many technical fields. An important place in the field of science and t...

Claims

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Application Information

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IPC IPC(8): G01C21/06G01C21/16
CPCG01C21/06G01C21/165
Inventor 潘文卿陶忠安学智谢欢高强骞琨章文娟于周锋贾子庆段晓韬舒营恩宋慧娟贠平平穆朝义海云波
Owner 西安应用光学研究所
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