A radio high-precision frequency-hopping positioning method with strong anti-interference ability

A positioning method and radio technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., can solve the problems of low anti-interference ability of radio positioning and navigation systems, and achieve large-scale navigation performance, long propagation distance, The effect of less adjacent channel interference

Active Publication Date: 2020-09-04
BEIHANG UNIV
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Problems solved by technology

[0010] Aiming at the problem of low anti-interference ability of the radio positioning and navigation system mentioned above, the present invention proposes a new radio frequency-hopping-based large-scale high-precision positioning method, specifically a radio high-precision frequency-hopping positioning method with strong anti-interference ability

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  • A radio high-precision frequency-hopping positioning method with strong anti-interference ability
  • A radio high-precision frequency-hopping positioning method with strong anti-interference ability
  • A radio high-precision frequency-hopping positioning method with strong anti-interference ability

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Embodiment Construction

[0071] The present invention will be further described in detail below in conjunction with accompanying drawings and examples.

[0072] On the basis of an independent, large-area, indoor and outdoor continuous and high-precision positioning method, the present invention adds the idea of ​​real-time and dynamic adjustment of the navigation frequency, and uses the concept of frequency-hopping communication to continuously change the navigation frequency band, so that malicious or unintentional Signal interference can only affect navigation signals in a short period of time, which can greatly improve the usability of the navigation method of the present invention in interference environments, and is especially suitable for navigation requirements in harsh environment areas or in war states.

[0073] like figure 1 As shown, by establishing base stations at multiple high points on the ground in a large area, the FM radio positioning signal with strong penetrating power and wide cov...

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Abstract

The invention discloses a wireless high-precision frequency-hopping location method with strong antijamming capability and relates to the field of wireless location. The method comprises the steps: firstly, erecting a plurality of transmitting stations on ground high spots, determining geographical position coordinates of all the base stations and performing clock synchronization among all the base stations by utilizing an optical fiber synchronization or satellite navigation difference technology; then determining frequency-hopping atlases of wireless navigation signals sent out by all the base stations and modulating and sending variable-frequency wireless navigation signals according to the frequency-hopping atlases; finally, receiving frequency-hopping wireless navigation signals transmitted by the base stations through a user receiver according to the frequency-hopping atlases and performing signal demodulation and location calculation. The wireless high-precision frequency-hopping location method disclosed by the invention has high antijamming capability, high precision and large-scale navigation performance, can meet a real-time location requirement of a special navigation user under the severe electromagnetic environment, ensures high availability of user location, can effectively ensure requirements of special users in military, civil aviation, high speed, high dynamics and the like and can effectively improve availability of a navigation system.

Description

technical field [0001] The invention relates to the field of radio positioning. On the basis of analyzing the basic performance, advantages and disadvantages and anti-interference ability of existing radio navigation systems and satellite navigation systems, a radio high-precision frequency-hopping positioning method with strong anti-interference ability is proposed. Background technique [0002] With the development of radio navigation technology to this day, a relatively complete theoretical system and a very wide range of application fields have been formed. There are more than a dozen existing radio navigation systems, which are classified according to their working methods and applications: land-based large-scale positioning systems (compass, Volt, rangefinder, Tacan, Roland C), landing systems (instrument landing systems , microwave landing system, satellite landing system, radar-guided landing system), autonomous navigation system (FM radio altimeter, pulse radio alti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37G01S19/21
CPCG01S19/21G01S19/37
Inventor 黄智刚刘志杰包俊杰杨甜甜
Owner BEIHANG UNIV
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