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GPS and glonass multimode signal selection method and multiplexer

A signal selection and multiplexing technology, applied in the field of satellite signal tracking system, can solve the problem of not being able to receive GPS and GLONASS signals at the same time

Inactive Publication Date: 2011-12-21
BEIJING UNISTAR MICROELECTRONICS
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  • Claims
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Problems solved by technology

Traditional satellite signal tracking systems can only receive GPS or GLONASS signals alone, and cannot receive GPS and GLONASS signals at the same time

Method used

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  • GPS and glonass multimode signal selection method and multiplexer
  • GPS and glonass multimode signal selection method and multiplexer
  • GPS and glonass multimode signal selection method and multiplexer

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with accompanying drawing:

[0009] Analog-to-digital converter multiplexer switch (ADC multiplexer)

[0010] The ADC multiplexing switch is programmable and has two modes of operation: 16-bit binary data (multiplexing mode), 8-bit quadrature data (2×2 complex multiplexing mode) ). In binary data mode, the A / D converter supports input in three formats: unsigned binary, signed and magnitude, or two’s complement input. The A / D converter multiplexer switch can be configured as a binary multiplexer Multiplexing input (16 input channels) or binary complex signal I&Q (8 input channels)

[0011] The data represents a band-pass signal with a frequency between 1MHz and 19MHz. This signal is sampled at a sampling frequency of 40MHz and thus upconverted to 21MHz to 39MHz.

[0012] Source Selector Multiplexer

[0013] The source selector is a multiplexer. It determines which 16-bit input signal is used (see th...

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Abstract

A GPS and GLONASS multi-mode signal selection method and a multiplexer, including two operating modes: 16-bit binary data (multiplexing mode), 8-bit quaternary data (2 by 2 complex multiplexing mode) multiplexing mode), in the binary data mode, the ADC supports three formats of input: unsigned binary, sign and magnitude, or two's complement, the input ADC multiplexing switch can be configured as Binary multiplex input (16 input channels) or binary complex I&Q (8 input channels).

Description

technical field [0001] The invention relates to a satellite signal tracking system, mainly referring to a GPS and GLONASS multimode signal selection method and a multiplexer. Background technique [0002] It is known that GPS uses code division multiple access signals, and GLONASS uses frequency division multiple access signals, and the two belong to different navigation satellite systems, and have completely different signal encoding and transmission methods. Traditional satellite signal tracking systems can only receive GPS or GLONASS signals alone, and cannot receive GPS and GLONASS signals at the same time. Contents of the invention [0003] The purpose of the present invention is to provide a kind of GPS and GLONASS multi-mode signal selection method and multiplexer, by 16-bit binary data (multiplexing mode), 8-bit quaternary data (2 multiplied by 2 complex multiplexer) multiplexing mode), which better overcomes the shortcomings of the prior art. [0004] The method...

Claims

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Application Information

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IPC IPC(8): G01S19/33
Inventor 庄巍王泽复谢德明陈跃斌王星
Owner BEIJING UNISTAR MICROELECTRONICS
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