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Satellite signal separating device and method

A satellite signal, separation and processing technology, used in satellite radio beacon positioning systems, measurement devices, instruments, etc., can solve the problems of high hardware cost and implementation complexity, and achieve the reduction of size and cost, and the number of antenna array elements. Effect

Active Publication Date: 2019-03-05
TSINGHUA UNIV
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Problems solved by technology

Both approaches have high hardware cost and implementation complexity

Method used

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  • Satellite signal separating device and method
  • Satellite signal separating device and method
  • Satellite signal separating device and method

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Embodiment approach

[0063] Therefore, according to an embodiment of the present application, the signal separation problem is transformed into the following optimization problem based on multi-linear constraints:

[0064]

[0065] Among them, w represents the weight vector of the antenna array for the satellite signal to be separated, a j (j=1,...,M) represents the steering vector of the antenna array for each satellite, M represents the total number of visible satellites, i represents the satellite to be separated, α j Represents the predetermined threshold of attenuation, min represents minimization, and s.t. represents the constraint condition.

[0066] In this way, according to the embodiment of the present application, when performing satellite signal separation, the incoming and outgoing information of all satellite signals is considered, and the steering vectors of the antenna array for all satellites are used to calculate the weighted vector of the antenna array for the satellite signa...

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Abstract

The invention provides a satellite signal separating device and method. The satellite signal separating device comprises an antenna array and a processor, the antenna array comprises multiple array elements, and the processor adjusts the shape of a synthesis directional diagram of the array elements, forms directional gain in the coming direction of a satellite signal to be separated and forms attenuation in the incoming direction of other satellite signals, and thus, separates the satellite signal to be separated. The number of needed array elements is reduced greatly, and the size and cost of the antenna array are reduced greatly.

Description

technical field [0001] The present application relates to a satellite signal separation and processing device and method. Background technique [0002] As the global satellite navigation system (GNSS) is widely used in the military and civilian fields, the research on navigation countermeasures around the GNSS system is also gaining more and more attention. [0003] In complex forwarding deception jamming scenarios, it is necessary to separate the received satellite signals, so as to introduce a set delay and Doppler to each satellite signal. In this way, the target can be jammed to the designated position, which has higher concealment and controllability than direct forwarding without signal separation. [0004] Public civil signals can be separated based on pseudocode. But for the authorization signal with unknown pseudo-random code, there are currently two main airspace processing methods for signal separation. The first method uses multiple parabolic antennas, and eac...

Claims

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Application Information

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IPC IPC(8): G01S19/28G01S19/37
CPCG01S19/28G01S19/37
Inventor 崔晓伟张佳琪石钦陆明泉
Owner TSINGHUA UNIV
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