Realistic simulation method for satellite signals

A satellite signal and simulation method technology, applied in the field of electronic information, can solve problems affecting the authenticity of satellite signal propagation

Pending Publication Date: 2019-03-15
西安雷擎电子科技有限公司
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Problems solved by technology

[0003] Before deceiving the intruding UAV, the real position and speed of the UAV must be confirmed, so the UAV needs to be positioned through satellite signals. However, in the process of simulating the propagation of satellite signals, the existing The simulation calculation only adopts the method of introducing coefficients to compensate

Method used

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Embodiment Construction

[0022] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0023] A method for truly simulating a satellite signal, comprising the steps of:

[0024] Step 1, radio frequency interference simulation: use the in-band strong noise of the satellite signal to simulate the broadband radio frequency, modulate the broadband radio frequency into the intermediate frequency of the satellite signal, and use a single tone that falls within the passband of the satellite signal to simulate the narrowband radio frequency;

[0025] Step 2, environmental noise simulation: use a standard uniform random number generator to generate white noise, and transform it into a Gaussian distribution to simulate environmental noise;

[0026] Step 3, ionospheric error simulation: calculate the ionospheric delay error using the 8 ionospheric parameters released by the navigation message according to the Klobuchar model;

[0027] Step 4, ...

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Abstract

The invention discloses a realistic simulation method for satellite signals. The method comprises the following steps of radio frequency interference simulation, environment noise simulation, ionizedlayer error simulation, troposphere error simulation and error introduction simulation calculation. The method has the advantages that errors and interference of a satellite propagation process are divided into radio frequency interference, environmental noise, ionized layer errors and troposphere errors through the method, and the errors and the interference are simulated through a mathematical method and finally introduced into satellite propagation simulation calculation, so that the propagation simulation process of the satellite signals is more consistent with real situations; satellite position and speed are calculated through an earth-centered earth-fixed coordinate system, and different earth-centered earth-fixed coordinates are adopted according to different satellite types so that different satellites can use more targeted mathematical models to obtain more real simulation results.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a real simulation method of satellite signals. Background technique [0002] Due to the low cost, convenient operation, powerful functions and easy acquisition of drones, it is easy to form "black flying". Usually, due to their slow flight speed, small size, and low flying altitude, these UAVs have a small radar reflection cross-sectional area and are difficult to be detected and intercepted. Some unqualified and unapproved individuals and organizations use drones to carry out flight activities and easily pose serious security threats to national society, air routes, key targets, and large-scale activities. What's more serious is that some criminals can use drones to carry explosives, cameras, drugs, etc., causing great security risks to important areas such as prisons, airports, nuclear facilities, military facility bases, and borders, and seriously endangering t...

Claims

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 段章山王徐华
Owner 西安雷擎电子科技有限公司
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