Apparatus for generating simulation navigational satellite reflected signal

A technology for navigation satellites and reflected signals, applied in measuring devices, radio wave reflection/re-radiation, and re-radiation utilization, etc., can solve the problem of lack of reflected signal generation capabilities, lack of debugging, testing, and verification methods, and increase system development costs, etc. question
CN101349749AInactive Publication Date: 2009-01-21BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2009-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a generator for simulating navigation satellite reflected signals, comprising a common computer, an antenna, a navigation information module (3), an intermediate frequency signal generating module and a radio frequency module (2), wherein the navigation information module (3) and the intermediate frequency signal generating module are stored in the memory of the computer, the intermediate frequency signal generating module comprises a frequency spread modulator (1), a code digital control oscillator (4), a carrier digital control oscillator (5), a code delay generator (6) and a Doppler shift generator (7). The invention simulates the change of navigation satellite signals at a reflector surface or a reflector and generates the transmission time delay and Doppler shift of the reflected signals according to the change of the track of the receiver. The generator can test delay mapping receivers, to provide a new test method for the development of marine remote sensors and the utilization of reflected signals of global navigation satellite systems.
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Description

technical field

[0001] The present invention relates to a device for generating analog signals, more particularly, a device for generating reflected signals used for simulating the changes of navigation satellite signals after passing through reflectors or reflectors. Background technique

[0002] Using the reflected signals of the Global Navigation Satellite System (GNSS) to invert the ocean wind field, a large number of experiments have been done in the United States, Europe and China, and preliminary applications have been obtained. With the construction of the European Galileo Navigation Satellite System (GALILEO), the construction of China's Beidou system, and the modernization process of the Russian Global Orbit Navigation Satellite System (GLONASS), more and more applications need to use the reflected signals of navigation satellites to form a dual-base passive system. The radar system retrieves the physical parameters of the reflector or reflector, such as the sea su...

Claims

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