Sea ice detecting method based on reflected signals of BeiDou satellite

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...

AI Technical Summary

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), which has all-weather and all-time imaging capabilities, but if you want to observe continuous sea ice characteristics in a large range, you need very high cost

In addition, the traditional sea ice measurement method uses a single satellite detection, and the sea ice detection range is limited; thirdly, in the prior art, the GPS system of the United States is usually used as the signal source, which can only locate, does not have communication functions, and has limited coverage

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