CN202586943U

CN202586943U - Novel shortwave broadband multichannel digital receiver

Info

Publication number: CN202586943U
Application number: CN 201220107968
Authority: CN
Inventors: 闫捌林; 朱屏
Original assignee: CHENGDU ZHONGAN SPECTRUM TECHNOLOGY CO LTD
Current assignee: CHENGDU ZHONGAN SPECTRUM TECHNOLOGY CO LTD
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-12-05
Anticipated expiration: 2022-03-21

Abstract

Disclosed is a novel shortwave broadband multichannel digital receiver, comprising a pre-selecting module, an RF module, an AD module, a broadband processing module, a narrowband intermediate frequency processing module, a digital panorama module, an original IQ module, a 512MB data buffer memory module, and a gigabit net, wherein an input terminal of the pre-selecting module is connected with an interface module while an output terminal of the pre-selecting module is connected with an input terminal of the RF module; an output terminal of the RF module is connected with an input terminal of the AD module; an output terminal of the AD module is connected with an input terminal of the broadband processing module; an output terminal of the broadband processing module is connected with an input terminal of the narrowband intermediate frequency processing module; an output terminal of the narrowband intermediate frequency processing module is connected with the digital panorama module, the original IQ module, and an input terminal of the 512MB data buffer memory module; and the digital panorama module, the original IQ module, and the 512MB data buffer memory module are connected with a network via the gigabit net. The novel shortwave broadband multichannel digital receiver of the utility model features small size, powerful functions, and high indexes.

Description

A kind of novel short wave bandwidth multi-channel digital receiver

Technical field

The utility model relates to a kind of multi-channel digital receiver, particularly a kind of novel short wave bandwidth multi-channel digital receiver.

Background technology

Receiver is the common apparatus of the radio monitoring and the communications field; Receiver in the market has analog-and digital-two kinds; These two kinds of receivers all are to adopt super-heterodyne architecture, promptly realize that by circuit such as resonant tank, local oscillator synthesizer, mixing, filtering, amplifications difference is the processing mode that intermediate frequency is later; Adopt analog circuitry processes behind the analog receiver intermediate frequency; And digital receiver adopts high-speed A/D converter, converts analog intermediate frequency signal to digital signal, again through digital signal processor processes output.These two kinds of receivers all can only receive the signal of a narrow band frequency, promptly have only one to receive narrow channel, can't receiving wide-band signal.Present traditional receiver has only analog interface, 232 Serial Control mouths, lacks network interface.

Signal of communication is quite intensive in short wave channel, and general communication, monitoring system need receive and monitor a plurality of signals, because a receiver can only receive a signal; Just need many receivers; Cause that monitoring system is huge, complicacy and cost be high, again because each receiver all need connect an aerial signal, so monitoring system also must be equipped with complicated common antenna distribution network; Owing to lack network interface, can't satisfy the needs of present information processing platform.

Summary of the invention

The purpose of the utility model just is to provide a kind of novel short wave bandwidth multi-channel digital receiver; Adopt state-of-the-art FPGA and DSP technology to accomplish digital processing; Can handle radio signal up to the 8MHz real-time broadband; Accomplish simultaneously in the bandwidth up to the receiving and analyzing demodulation of 64 independent narrow band channels, be equivalent to No. 64 narrow-band receivers and the band receiver of having a lot of social connections, have the kilomega network output interface; And be distributed to back-end network distributed computer work station and receive processing, have characteristics such as size is little, function is strong, index height.

To achieve these goals; The technical scheme that the utility model adopts is such: the novel short wave bandwidth multi-channel digital receiver of the utility model; Comprise ac-dc power supply, preliminary election module, radio-frequency module, AD module, broadband processing module, narrowband intermediate frequency processing module, digital panoramic module, original I Q module, 512MB data cache module and kilomega network; The preliminary election module is provided with antenna; The input of preliminary election module connects an interface module; The output of preliminary election module connects the input of radio-frequency module, and the output of radio-frequency module connects the input of AD module, and the output of AD module connects the input of broadband processing module; The output of broadband processing module connects the input of narrowband intermediate frequency processing module; The output of narrowband intermediate frequency processing module connects the input of digital panoramic module, original I Q module and 512MB data cache module, and the output of digital panoramic module, original I Q module and 512MB data cache module is connected with network through kilomega network, and said ac-dc power supply provides power supply for each module.

Further, all be connected a GPS module on said digital panoramic module, original I Q module and the 512MB data cache module.

Further, on the said ac-dc power supply switch is set.

Compared with prior art, the advantage of the utility model is: the utility model adopts state-of-the-art FPGA and DSP technology to accomplish digital processing, can receive the radio signal up to the 8MHz real-time broadband; Accomplish simultaneously in the bandwidth up to the receiving and analyzing demodulation of 64 independent narrow band channels, be equivalent to No. 64 narrow-band receivers and the band receiver of having a lot of social connections, have the kilomega network output interface; And be distributed to back-end network distributed computer work station and receive processing, the separate unit receiver can be accomplished 64 signal numbers that narrow-band receiver could receive in the past, and integrated level improves greatly; Volume reduces tens times; Complexity reduces greatly, simplifies or remove the aerial signal distribution network, and the result after receiver is handled is transferred to the user by the kilomega network of band distribution function; Satisfy the needs of present information processing platform; The GPS time service guarantees that the time is accurately synchronous, and the big data buffering of 512MB pond helps catching the crucial header of signal of interest, the utlity model has characteristics such as size is little, function is strong, index height.

Description of drawings

Fig. 1 is the functional block diagram of the utility model.

Embodiment

To combine accompanying drawing that the utility model is described further below.

Referring to Fig. 1; The novel short wave bandwidth multi-channel digital receiver of the utility model; Comprise ac-dc power supply, preliminary election module, radio-frequency module, AD module, broadband processing module, narrowband intermediate frequency processing module, digital panoramic module, original I Q module, 512MB data cache module and kilomega network; The preliminary election module is provided with antenna, and the input of preliminary election module connects an interface module, and the output of preliminary election module connects the input of radio-frequency module; The output of radio-frequency module connects the input of AD module; The output of AD module connects the input of broadband processing module, and the output of broadband processing module connects the input of narrowband intermediate frequency processing module, and the output of narrowband intermediate frequency processing module connects the input of digital panoramic module, original I Q module and 512MB data cache module; The output of digital panoramic module, original I Q module and 512MB data cache module is connected with network through kilomega network; Said ac-dc power supply provides power supply for each module, all is connected a GPS module on said digital panoramic module, original I Q module and the 512MB data cache module, and correct time and pulse per second (PPS) are provided; Make the data markers precision 1ms of output, a switch is set on the said ac-dc power supply.

This operation of receiver principle: the antenna receiving inputted signal is given the preliminary election module through N type connector; The preliminary election module selects the working frequency range signal to send to radio-frequency module, and radio-frequency module is through preposition amplification, automatic gain control adjustment back entering high-speed AD module, and the AD disposable plates of 81.92MHz sampling rate is delivered to the broadband processing module after with the analog intermediate frequency digitlization; Getting into narrowband intermediate frequency after the DDC Digital Down Convert of processing modules implement broadband, broadband handles; Accomplish that 64 road narrow-band digital low-converters are handled, tuning, filtering, demodulation, automatic gain control control, realize that 64 road narrow band signals receive, the arrowband result is delivered to modules such as digital panoramic, original I Q, 512MB numeral buffer memory; The digital panoramic module is accomplished the variable broadband power spectrum and is handled; Power spectrum output 0.125-8MHz bandwidth varying, original I Q module packing 8MHz broadband IQ data are given the kilomega network module, and the 512MB data cache module is accomplished up-to-date 13 seconds wideband data circular buffers; And through kilomega network output; The kilomega network transmission wide and narrow strip data that field programmable gate array is realized also receive control command, interface module control preliminary election module and radio-frequency module work, and the alterating and direct current source module provides 3.3v, 5v, 12v power supply for all modules; Switch is through front panel switch control; And be connected to the indicator light whether equipment works, and all dateouts have the Embedded GPS module provides correct time information, and all modules of this receiver are installed in 19 inches 1U standard PC cases.

Claims

1. novel short wave bandwidth multi-channel digital receiver; It is characterized in that: comprise ac-dc power supply, preliminary election module, radio-frequency module, AD module, broadband processing module, narrowband intermediate frequency processing module, digital panoramic module, original I Q module, 512MB data cache module and kilomega network; The preliminary election module is provided with antenna; The input of preliminary election module connects an interface module; The output of preliminary election module connects the input of radio-frequency module, and the output of radio-frequency module connects the input of AD module, and the output of AD module connects the input of broadband processing module; The output of broadband processing module connects the input of narrowband intermediate frequency processing module; The output of narrowband intermediate frequency processing module connects the input of digital panoramic module, original I Q module and 512MB data cache module, and the output of digital panoramic module, original I Q module and 512MB data cache module is connected with network through kilomega network, and said ac-dc power supply provides power supply for each module.

2. a kind of novel short wave bandwidth multi-channel digital receiver according to claim 1 is characterized in that: all be connected a GPS module on said digital panoramic module, original I Q module and the 512MB data cache module.

3. a kind of novel short wave bandwidth multi-channel digital receiver according to claim 1 is characterized in that: a switch is set on the said ac-dc power supply.