Evaporation waveguide monitoring diagnosing evaluating method and device

A technology of evaporative waveguide and radar, which is applied in the field of evaporative waveguide monitoring, diagnosis and evaluation methods and devices, and can solve problems such as difficult to achieve, continuity of hydrometeorological parameters, poor real-time performance, and low degree of automation

Inactive Publication Date: 2006-01-25
PLA DALIAN NAVAL ACADEMY
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  • Abstract
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Problems solved by technology

[0004] 1) It is necessary to send special personnel to record hydrometeorological parameters such as atmospheric temperature, relative humidity, sea surface water temperature, etc., and the degree of automation is low. In order to improve the diagnostic accuracy, the records of these hydrometeorological parameters are required to be synchronized in time, which is practical in actual operation. more difficult to achieve;
[0005] 2) The recorded hydrometeorological parameters have poor continuity and real-time performance;
[0006] 3) It is difficult to measure the sea surface water temperature when the ship is sailing, which brings great difficulties to the diagnosis of the evaporation waveguide;
[0008] 1) The evaluation of the radar detection range does not take into account atmospheric environmental factors such as evaporation waveguides, resulting in a large deviation between the estimated radar detection range and the actual situation;
[0009] 2) Cannot effectively predict radar over-the-horizon detection

Method used

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  • Evaporation waveguide monitoring diagnosing evaluating method and device
  • Evaporation waveguide monitoring diagnosing evaluating method and device

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Effect test

Embodiment 1

[0079] In order to evaluate the impact of the evaporation waveguide on radar detection, the Dalian Naval Academy of the Navy monitored and diagnosed the evaporation waveguide on the side of the south pier (λ121°39.8'E 38°51.8'N) of Dalian 760 Research Institute, and evaluated the impact of the 1290 radar on the evaporation waveguide. The maximum detection distance under the conditions, adopted the evaporation waveguide monitoring diagnosis evaluation method and device of the present invention in the test, and its use and operation procedures are as follows:

[0080] When monitoring, diagnosing and evaluating the evaporation waveguide on the coast, install the bracket on the wharf 2 meters away from the sea. The infrared sea surface temperature sensor [31] and the GPS receiver [32] are installed, and the installation heights of multiple sensors are respectively: the temperature and humidity sensor in the lower layer [11] is 3 meters above the average sea surface height, and the...

Embodiment 2

[0086] In order to verify the correctness of the evaporative waveguide monitoring and diagnostic evaluation method and device diagnostic evaluation of the present invention, the XX army installed an evaporative waveguide monitoring, diagnostic and evaluation device on the XX ship. The operation steps are as follows:

[0087] According to the structure and height of the ship, the sensors are respectively installed on the side of the ship and on the top of the forecastle. ] is located on the side of the middle ship, at a height of 7 meters from the sea surface. The infrared sea surface temperature sensor [31] is 8 meters above the sea surface. The infrared lens points to the open sea surface. And the GPS receiver [32] is positioned on the top of the first building, the GPS receiver [32] is 8 meters apart from the sea surface height, the high-level temperature and humidity sensor [11] is 9 meters apart from the sea surface height, and the electromagnetic wind direction wind speed ...

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Abstract

The invention is an evaporation waveguide monitoring, diagnosing and evaluating method and device, characterized in that the device is composed of temperature-humidity sensor, electromagnetic wind direction-speed sensor, GPS receiver, air pressure sensor, compass converter, data collector, LCD, communication interface, Flash memory, AC power supply, and multi-channel serial communication and calculation display unit and the method includes the steps: real-time measuring hydro-meteorological parameters and diagnosing the evaporation waveguide height and the vertical distribution of atmosphere correction refraction indexes; calculating the cut-off frequency and cut-off wavelength of a radar, and integrated with the input radar parameters and target parameters, calculating the transmission losses and maximum detection distance of the radar electromagnetic wave to draw a distribution diagram of detection probability of the radar; evaluating if the distribution diagram has over-the-horizon ability. Its advantages: simplifying the measuring method; continuously and real-timely measuring the hydro-meteorological parameters; and the accuracies of evaporation waveguide engine value diagnosis and radar detection evaluation reach above 95%.

Description

technical field [0001] The invention relates to a system for real-time automatic diagnosis of the vertical distribution of evaporation waveguide height and atmospheric correction refractive index, and for evaluating the detection situation of different types of radars in the atmospheric environment, especially a method and device for monitoring, diagnosing, and evaluating the evaporation waveguide. The device is mainly used for Based on the monitoring of atmospheric waveguide and the evaluation of radar detection, it is of great significance to improve the performance of radar and other shipboard electronic equipment and guide the use of radar. It belongs to the field of atmospheric environment monitoring and radio technology. Background technique [0002] Evaporation waveguide is a natural phenomenon in the marine atmospheric environment. It is formed by the evaporation of water vapor on the sea surface, which makes the atmospheric humidity in a small altitude range on the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/95
CPCY02A90/10
Inventor 张永刚唐海川黄小毛王华焦林
Owner PLA DALIAN NAVAL ACADEMY
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