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Method for improving sky-wave radar sea surface ship target tracking and positioning precision

A technology for target tracking and positioning accuracy, applied in radio wave measurement systems, instruments, etc., can solve problems such as low tracking accuracy, and achieve the effects of improving tracking and positioning accuracy, low investment cost, and wide distribution.

Inactive Publication Date: 2015-03-04
WUHAN UNIV
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Problems solved by technology

[0005] Aiming at the problem of low positioning and tracking accuracy of existing sky-wave radars, the present invention provides a method for improving the tracking and positioning accuracy of sky-wave radar sea surface ship targets. This method uses the ship navigation information provided by a large number of existing AIS without adding new equipment , providing a new, low-cost, high-precision error correction method for high-frequency sky-wave radar sea surface ship target tracking and positioning, and can also perform spatial position error correction for non-cooperative ship targets, improving tracking and positioning accuracy

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  • Method for improving sky-wave radar sea surface ship target tracking and positioning precision
  • Method for improving sky-wave radar sea surface ship target tracking and positioning precision
  • Method for improving sky-wave radar sea surface ship target tracking and positioning precision

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] The working principle of high-frequency sky-wave radar is as follows: figure 1 shown. High-frequency sky-wave radar usually consists of a radar transmitter system, a radar receiving system, an ionospheric transceiver system, a frequency synthesis and synchronization control system, and a data processing system. The radar transmitting system is composed of a power amplifier and a transmitting antenna. It mainly amplifies the high-frequency signal generated by the frequency synthesizer through the power amplifier and transmits it from the antenna. The radar receiving system is mainly composed of a receiving antenna array and a multi-channel receiver. The signal is received through the receiving antenna array and converted into a digital signal through receiver filtering, frequency mixing, amplification and data acquisition. The information processing system is...

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Abstract

The invention discloses a method for improving sky-wave radar sea surface ship target tracking and positioning precision. Cooperative ship target positioning and tracking information provided by an AIS (automatic identification system) and sea surface target positioning and tracking information detected by a sky-wave radar are associated and integrated after coordinate transformation and time unification, positioning error information of a cooperative ship target is acquired, and tracking and positioning errors of the ship target positioning and tracking information detected by the sky-wave radar are modified. The method has the advantages that an ionized layer detection device is omitted, system cost is reduced, error correction value space resolution rate acquired by the aid of a large quantity of AIS ship positioning information is high, sky-wave radar ship positioning and tracking precision is improved, space position errors of a non-cooperative ship target are modified, and the tracking and positioning precision is improved.

Description

technical field [0001] The invention belongs to the field of high-frequency sky wave radar ship target positioning, and relates to a method for improving the tracking and positioning accuracy of sky wave radar sea surface ship targets. Background technique [0002] High-frequency sky-wave radar utilizes the refraction characteristics of the ionosphere to high-frequency electromagnetic waves, and can realize long-distance and large-scale over-the-horizon detection of sea surface ship targets and sea surface state parameters, and the detection distance can even reach thousands of kilometers. Compared with greater cost-effectiveness ratio. [0003] However, due to the influence of the working frequency band, radar system, ionospheric characteristics, sea clutter and complex electromagnetic environment, the high-frequency sky-wave radar system has low target tracking and positioning accuracy and cannot fully meet user requirements. In order to improve the accuracy of sky-wave r...

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 高火涛高可至
Owner WUHAN UNIV
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