An Adaptive Multi-satellite Spread Spectrum Signal Analysis Interpreter

Abstract

The invention discloses an adaptive multi-satellite spread spectrum signal analysis and interpretation device. The adaptive multi-satellite spread spectrum signal analysis and interpretation device comprises a frequency reference unit, a down-conversion unit, a first power divider and a plurality of signal analysis processors, wherein the signal analysis processors comprise analog front-end modules and kernel modules; the frequency reference unit is used for providing time and frequency references for each unit, and transmitting the provided time and frequency references to a centralized monitoring server; the down-conversion unit is used for performing down conversion on a plurality of paths of local output signals to obtain 70MHz intermediate-frequency signals, and transmitting the 70MHz intermediate-frequency signals to the power divider and the centralized monitoring server; the first power divider is used for equally distributing the intermediate-frequency signals to the plurality of analog front-end modules; the analog front-end modules are used for performing IQ orthogonal down conversion on the signals transmitted by the power divider, and outputting IQ orthogonal digital zero intermediate-frequency signals; and the kernel modules are used for performing dispreading and demodulating processing and IO phase de-blurring processing on the IQ orthogonal digital zero intermediate-frequency signals, and outputting the processed signals to an IO end.

Description

technical field [0001] The invention belongs to the technical field of ground measurement, launch and control systems at launch sites, and relates to an adaptive multi-satellite spread spectrum signal analysis and interpretation device. Background technique [0002] At present, my country's space launch missions have entered a high-density launch period. In order to improve the utilization rate of the payload, the multi-satellite launch mode has become the main way for future satellite launches. Satellite testing is the most important part before launch, and the quality of radio frequency test signal forwarding must be guaranteed. At the same time, in order to save satellite frequency resources, multi-satellite measurement and control is realized by the same frequency code division multiple access technology. During the test, multiple satellites were installed in the same small space of the launch tower. After starting up at the same time, the electromagnetic environment in...

AI Technical Summary

Problems solved by technology

Multi-satellite signals cannot achieve effective signal isolation through antenna space diversity, resulting in multi-signal aliasing, and it is easy to generate strong signals to suppress weak signals, resulting in satellite measurement and control signals that cannot be demodulated, or the locking state is extremely unstable, and the locking of radio frequency forwarding signals and demodulation are very difficult

At present, the commonly used technology only uses the same-frequency forwarding technology. This technology does not have the functions of despreading and signal interpretation, and can only basically meet the requirements of single-satellite test forwarding. There is no effective measure for multi-satellite test signal forwarding.

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