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Electromagnetic pulse radar echo simulation method in offshore area

A near-coastal sea area, electromagnetic pulse technology, applied in the radio wave measurement system, radio wave reflection/re-radiation, use of re-radiation, etc., to achieve the effect of saving manpower and material resources

Inactive Publication Date: 2017-05-10
SHANGHAI RADIO EQUIP RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a simulation method of electromagnetic pulse radar echoes in near-shore sea areas, which solves the need for the electromagnetic characteristics of the sea environment in the design of near-sea area radar systems, saves a lot of manpower and material resources compared with the actual measurement at sea, and can effectively provide radar detection and monitoring methods. Anti-jamming algorithm design, parameter selection, and performance evaluation provide references, which can be used for dynamic rendezvous virtual experiments of different sea condition prototypes in coastal waters, and also help to carry out research on the mechanism of electromagnetic pulse echo scattering in coastal seas

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  • Electromagnetic pulse radar echo simulation method in offshore area
  • Electromagnetic pulse radar echo simulation method in offshore area
  • Electromagnetic pulse radar echo simulation method in offshore area

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Embodiment Construction

[0060] According to the following Figure 1 to Figure 6 , the preferred embodiment of the present invention is described in detail.

[0061] like figure 1 As shown, the present invention provides a method for simulating echoes of electromagnetic pulse radars in coastal areas, comprising the following steps:

[0062] Step S1 , establishing a sea spectrum of the near-shore sea area.

[0063] The digital model generation of the sea spectrum of the coastal waters is based on the JONSWAP spectrum, and by introducing the shallowing coefficient To take into account the limited water depth in shallow water, it represents the wind and waves in the growth stage to a certain extent.

[0064] Based on the assumption that the energy flow is conserved as the wave propagates from one deep water location to the next finite water depth location, the water depth effect is linked to the sea spectrum by a shallowing factor.

[0065] The energy flow of a wave propagating from an infinite dept...

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Abstract

The invention relates to an electromagnetic pulse radar echo simulation method in an offshore area. A sea spectrum of an offshore area is established; an ocean surface grid region under a pulse Doppler system is determined and calculated; a scattering field vector of a rough surface element in the ocean surface grid region is calculated by using an electromagnetic algorithm; weighted calculation and simulation of influences on scattering conditions of all parts of the rough surface by a transceiver antenna gain are carried out; and with consideration of the antenna gain, a radar beam back-scattering echo radar equation is established, superposition calculation of scattering field vectors of rough surface elements in the ocean surface grid region is carried out, and thus a radar Doppler echo simulation signal is obtained. Therefore, the need for the electromagnetic property of the coastal environment by the offshore radar system design can be met; lots of manpower and materials are saved by compared with the practical marine measurement; and the reference can be provided for radar detection and anti-jamming algorithm design, parameter selection and performance evaluation. Therefore, the method not only can be used for different sea situation prototype dynamic meeting virtual experiment in an offshore area but also can be used for developing electromagnetic pulse echo scattering mechanism study of the offshore surface.

Description

technical field [0001] The invention relates to the field of modeling and simulation of electromagnetic scattering characteristics of targets and environments, in particular to a method for simulating echoes of electromagnetic pulse radar in near-shore sea areas. Background technique [0002] Offshore waters have become one of the basic patterns of future maritime operations. In the process of radar system development, it is necessary to establish a sea background echo simulation model in the offshore area, which provides the necessary theoretical basis for the research on data acquisition, feature extraction, control and identification of the sea target echo characteristics. At present, the development of radar systems relies on a large number of maritime experiments, which not only consumes a lot of manpower and material resources, but also makes it difficult to grasp the mechanism and laws. At the same time, due to the influence of waves refracted by the coastline, seabe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/88
CPCG01S7/4052G01S13/88
Inventor 顾俊梁子长戴飞薛正国
Owner SHANGHAI RADIO EQUIP RES INST
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