Beidou RDSS radio frequency transmission signal detection device

Abstract

The invention discloses a Beidou RDSS radio frequency transmission signal detection device, comprising a host, a Beidou RDSS unit for receiving BeiDou RDSS satellite data, and a BeiDou RNSS / GPS unit for receiving BeiDou RNSS navigation satellite data and GPS satellite data. A power supply management unit is used for supplying power to the Beidou RDSS unit, the Beidou RNSS / GPS unit and the host. Further included is a radio frequency transceiver frequency conversion chip for receiving an output signal of a low noise amplifier. An intermediate frequency output end and an intermediate frequency input end of the radio frequency transceiver frequency conversion chip are both connected with an intermediate frequency filter. While detecting radio frequency signal parameters, such as power, frequency accuracy, modulation errors and the like, the device of the invention realizes digital signal processing through a built-in ADC module and an FPGA, can accurately demodulate modulated information,realizes the diagnostic function of a RDSS user equipment transmission link, greatly reduces the inspection cost, is convenient and quick, and greatly improves the inspection efficiency. The device ofthe invention not only allows the free selection of an analog intermediate frequency signal and a digital intermediate frequency signal, but also facilitates the adjustment of a clock output frequency.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a Beidou RDSS radio frequency transmission signal detection device. Background technique [0002] The Beidou navigation system is a global satellite navigation system independently developed by China. It consists of three parts: the space segment, the ground segment and the user segment. The system has both RDSS and RNSS business models. RDSS is an active positioning system with short message communication services and requires users to transmit signals; RNSS is a passive navigation and positioning system that does not require users to transmit signals. The two services of RDSS and RNSS have good complementarity. The GPS satellite navigation system is a global satellite navigation system established by the United States. It has a development history of more than 30 years. It has mature technology and is widely used. It occupies a dominant position in the current satellite ...

AI Technical Summary

Problems solved by technology

After the RDSS user machine has been used for a period of time, due to the aging of electronic components, the power and frequency accuracy of the RF signal emitted by it will change to a certain extent, which will affect the performance of the user machine. In serious cases, it may not be usable. , the detection cost is too high and the benefit is low. At present, there is a lack of such general-purpose portable detection equipment to reduce detection and maintenance costs.

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