BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device

A technology of a receiving device and Beidou, applied in the field of satellite navigation, can solve the problems of increasing the production cost of the receiver, trouble for users, etc., and achieve the effect of stabilizing the amplitude and phase characteristics and reducing the extra cost.

Inactive Publication Date: 2013-02-20
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

Therefore, the research and development of BD receivers must take into account the transition and compatibility from the regional satellite navigation system to the global system, otherwise, the receiver for the regional system cannot be used in the global system, which will not only bring troubles to users, but also increase the reception rate. machine production cost

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  • BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device
  • BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device
  • BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device

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Embodiment Construction

[0021] see figure 1 , a preferred Beidou Phase I and Beidou Phase II RF compatible receiving device of the present invention is mainly composed of a power supply module, an antenna connected to the power supply module, a low-noise amplification module, a radio frequency module and a baseband signal processing module. In operation, the receiver receives the Beidou satellite signal from the antenna, and completes the positioning calculation. The radio frequency module completes the signal down-conversion, A / D conversion to the intermediate frequency digital signal, and the baseband signal processing module completes the synchronization of the signal and the message of the navigation information. Decoding, pseudo-range extraction and PVT calculation, and finally serial output of positioning information.

[0022] In the present invention, the antenna is used to receive the Beidou navigation signal, and then send it to the low-noise amplification module for amplification. The perf...

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Abstract

The invention discloses a BD1 (Beidou 1) and BD2 radio frequency compatible receiving method and device. The device mainly comprises a power module as well as an antenna, a low noise amplification module, a radio frequency module and a baseband signal processing module which are connected with the power module, wherein the low noise amplification module comprises an anti-interference filter, a first-level amplifier, a power divider, two narrow-band filters and two second-level amplifiers; and the radio frequency module comprises two down converters, two band-pass filters, two automatic gain controllers, two intermediate frequency dividers, four intermediate frequency filters, a frequency synthesizer and an analog-digital converter. The BD1 and BD2 radio frequency compatible receiving method and device can solve the compatibility problem in regional-to-global transition of a BD system, and the compatible receiving of signals of BD1 and BD2 is an effective path to realize the stable transition.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a Beidou Phase I and Beidou Phase II radio frequency compatible receiving method and device. Background technique [0002] China's Beidou satellite navigation system (BD) is the fourth largest satellite navigation system in the world after the US GPS, GLONASS, and European Galileo. China's Beidou satellite navigation system will cover the Asia-Pacific region in 2012, that is, the Beidou regional satellite navigation system (BD2 Phase I), and in 2020, it will form a network of more than 30 satellites with the ability to cover the whole world, that is, the Beidou global satellite navigation system (BD2 Phase II). BD is China's independent satellite navigation system, which not only has the function of high-precision PNT (positioning, navigation, timing), but also has the function of short message communication. BD will be used in all walks of life, and its applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/32
Inventor 孙希延纪元法符强王守华吴孙勇邓洪高
Owner GUILIN UNIV OF ELECTRONIC TECH
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