Regenerative signal source for second-generation Beidou satellite signal and generating method thereof

Abstract

The invention discloses a regenerative signal source for a second-generation Beidou satellite signal and a generating method thereof. The signal source comprises a power supply device, an outdoor active receiving antenna, a signal-regenerating processing device and an indoor transmitting antenna, wherein the power supply device is used for supplying power to the signal-regenerating processing device; an output end of the outdoor receiving antenna is connected with an input end of the signal-regenerating processing device; an input end of the indoor transmitting antenna is connected with an output end of the signal-regenerating processing device. The signal source is relatively small in volume and flexible in power supplying manner, can despread and filter received signals so as to filter out noise and keep effective signals, so that signals obtained through up-conversion are enabled to be similar to signals sent from a satellite, the fact that signal coverage with a high signal-to-noise ratio and a high dynamic range is achieved in an area where real satellite signals cannot reach is ensured, and the problem that a multi-array element anti-interference antenna cannot receive the signals effectively in a clouding environment is solved.

Description

technical field [0001] The invention relates to the field of satellite communication positioning, in particular to a method for realizing Beidou second-generation regenerative satellite signals. Background technique [0002] As the strategic layout of Beidou satellite navigation system independently designed by my country gradually matures, Beidou satellite navigation equipment, especially anti-jamming navigation equipment, has entered a critical period of industrial application; in the scientific research, production and inspection of anti-jamming navigation equipment, it is often necessary to The outdoor real satellite signal is forwarded to the indoor to complete the device's ephemeris reception, time correction, positioning and other functions. The traditional solution is to use an ordinary repeater to forward the outdoor signal in an analog manner, that is, to amplify the signal and noise at the same time; after the multi-element anti-jamming antenna receives the signal,...

AI Technical Summary

Problems solved by technology

The traditional solution is to use an ordinary repeater to forward the outdoor signal in analog mode, that is, to amplify the signal and noise at the same time; after the multi-element anti-jamming antenna receives the signal, even if the low noise amplifier with the smallest noise figure is used, the noise The power will only increase, resulting in a decrease in the signal-to-noise ratio

Since the traditional transponder does not improve the signal quality, a slightly stronger signal will be easily suppressed as an interference signal; and if the signal is slightly weaker, it will not meet the receiving sensitivity requirements, which will cause serious damage to the actual use. large instability

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