Sea ice detecting method based on reflected signals of BeiDou satellite

A technology of reflected signals and Beidou satellites, which is applied in the field of satellite remote sensing, can solve the problems of high complexity of reflected signal receivers, limited available signals, and inability to achieve ocean observation with high time resolution, light weight and small size

Inactive Publication Date: 2014-12-17
SHANGHAI OCEAN UNIV
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Problems solved by technology

Visible light sea ice remote sensing is mainly based on medium and low resolution optical sensors, and the images are intuitive, but affected by clouds, rain, fog and other weather, it cannot detect sea ice conditions all-weather and all-weather, the available signals are limited, and it is a single-base In the working mode, the reflection signal receiver has a high degree of complexity; microwave sea ice remote sensing is mainly based on synthetic aperture radar (SAR), whic

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  • Sea ice detecting method based on reflected signals of BeiDou satellite
  • Sea ice detecting method based on reflected signals of BeiDou satellite
  • Sea ice detecting method based on reflected signals of BeiDou satellite

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[0028] The invention adopts the BeiDou Navigation Satellite System-Re?ectometry (BDS-R) remote sensing technology of the reflected signal of the navigation satellite to detect the density of sea ice. like figure 2 As shown, different from the traditional remote sensing, the BDS-R receiver can receive the signals of multiple BDS satellites at the same time, so compared with the traditional single observation satellite, the use of BDS-R technology can observe a larger range of sea surface, and can Achieve high temporal resolution ocean observations.

[0029] The specific embodiment provided by the present invention will be described in detail below in conjunction with the accompanying drawings, a method for sea ice detection based on Beidou satellite reflection signals, please refer to figure 1 , the method of the present invention comprises the following steps:

[0030] Step S1, select the sea area to be measured, mount the BDS receiver and receiving antenna on platforms suc...

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Abstract

The invention relates to a sea ice detecting method based on reflected signals of a BeiDou satellite. The sea ice detecting method includes that S1, a sea area to be tested is selected, and special receivers and receiving antennas are carried by platforms including shores and aircrafts; S2, data of the BeiDou satellite is received by the special receivers; S3, after radio frequency front-end sampling process and digitization of the receivers, signals are stored as intermediate frequency signals; S4, the signals are pre-processed, and usable satellite signal data is found; S5, the satellite signals are tracked, and data is processed; S6, a polarization ratio data result is processed. The sea ice detecting method has the advantages that with the BDS-R (BeiDou navigation satellite system-reflectometry), the all-weather detection is performed to the sea ices, with signal sources multiple, coverage wide and cost low, and a bright application promotion is achieved on the sea ice remote sensing field.

Description

technical field [0001] The invention relates to the field of satellite remote sensing, in particular to a method for realizing sea ice detection based on Beidou satellite reflection signals. Background technique [0002] As the global warming effect increases, sea ice detection is particularly important. Sea ice, as a member of the global ocean and atmosphere system, interacts with the ocean and atmosphere and has a major impact on global climate change. The formation, development and melting process of sea ice reflect and affect the exchange process between the ocean and the atmosphere, which in turn affects the circulation pattern between the ocean and the atmosphere. my country's sea ice has become the most serious marine disaster except storm surges. At the same time, the existence of sea ice also directly affects the energy budget of the earth and atmospheric systems. Therefore, it is necessary to detect sea ice. [0003] At present, the main standard for sea ice dete...

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Application Information

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IPC IPC(8): G01S19/14
CPCG01S19/14G01S19/35
Inventor 张云孟婉婷顾祈明韩彦岭洪中华
Owner SHANGHAI OCEAN UNIV
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