CN202634451U - Broadband wireless radio-frequency spectrum monitoring station - Google Patents

Abstract

The utility model belongs to the field of radio and digital signal processing, and particularly discloses a broadband radio-frequency spectrum monitoring station. The broadband radio-frequency spectrum monitoring station comprises a short wave antenna, a broadband ultra-short wave antenna, a short wave band radio frequency front end with 1.5-20 Mhz, an ultra-short radio frequency front end with 20-3000 Mhz, a microwave switch and a signal processing board card (containing a high-speed analogue-digital converter) based on a complex signal multi-phase digital filter group. The signal processing board card realizes parallel processing of a plurality of the channels through a multi-phase digital filter group, so that total probability signal capturing and the acceleration search of high-speed and broadband radio signals can be realized.

Description

Wideband radio-frequency spectrum monitoring station

Technical field

The utility model belongs to radio and digital processing field, is specifically related to a kind of broadband radio spectrum monitoring station that is applied to radio signal monitoring and spectrum management.

Background technology

Existing radio-frequency spectrum monitoring station comprises receiver, signal processing unit and antenna.In the radio-frequency spectrum monitoring except will frequency-fixed signal monitoring to routine; Also to realize the monitoring and the analysis of high speed, broadband signal; Typical in jumping, spread spectrum receivers signal; Because broadband real-time frequency saltus step technology has been adopted in these radio station, makes these wire sizes have good anti-interference, anti-interception capability.Therefore, be the hot issue of research to the broadband of the unknown, the monitoring and the analysis of burst high speed signal always.

Traditional radio-frequency spectrum monitoring station is through after antenna, the receiver; Generally will pass through Digital Down Convert handles; It is usually said digital down converter (Digital Down Converter or DDC); The problem of the main solution of DDC comprises: the 1st, carry out moving of frequency spectrum, and solved the excessive problem of the too high data volume that causes of front end analog to digital converter ADC sample rate; The 2nd, can come to select flexibly signal bandwidth through changing the multiple that extracts, be beneficial to the demodulation of follow-up baseband signal.

This radio-frequency spectrum monitoring station based on the DDC system can change centre frequency and bandwidth; But and be not suitable for the real-time monitoring and the processing of parallel signal; To the signal in the wideband segment limit, particularly jumping, spread-spectrum signal can not cover fully, and then speed is fast inadequately as searching for and keeping watch on; Understand omission or lossing signal and produce false dismissal, be difficult for realizing the full probability signal interception of high speed, broadband signal.

The utility model content

In order to address the above problem, the purpose of the utility model is to provide that a kind of processing speed is faster, the wideband radio-frequency spectrum monitoring station of broadband signal full probability signal interception.

In order to realize above-mentioned utility model purpose, the technical scheme that the utility model adopted is following:

A kind of wideband radio-frequency spectrum monitoring station, this device comprise ultrashort wave radio-frequency front-end, microwave switch and the signal processing integrated circuit board of short-wave antenna, wideband ultrashort wave antenna, 1.5～20Mhz short-wave band radio-frequency front-end, 20～3000Mhz; Wherein, said short-wave antenna is used to receive the shortwave of 1.5～20Mhz; Wherein, the wideband ultrashort wave antenna is used to receive the ultrashort wave of 20～3000Mhz; Wherein, the rf inputs of said 1.5～20Mhz short-wave band radio-frequency front-end is connected with said short-wave antenna, directly output after the short-wave signal segmentation filtering of the 1.5～20Mhz that is used for short-wave antenna is received; Wherein, the rf inputs of the ultrashort wave radio-frequency front-end of said 20～3000Mhz is connected with said wideband ultrashort wave antenna, and the ultrashort wave conversion of signals of the 20～3000Mhz that is used for the wideband ultrashort wave antenna is received is the intermediate-freuqncy signal output of 70 ± 7.5Mhz; Wherein, Said microwave switch comprises two inputs, an output and the control end that the control input and output are switched; Two inputs connect the output of the ultrashort wave radio-frequency front-end of 1.5～20Mhz short-wave band radio-frequency front-end and 20～3000Mhz respectively; Its output is connected the signal input part of signal processing integrated circuit board; Its control end is connected the control signal output ends of signal processing integrated circuit board, is used for according to the instruction timesharing of signal processing integrated circuit board the ultrashort wave of 1.5～20Mhz shortwave, 20～3000Mhz being transferred to the signal processing integrated circuit board; Wherein, The complex signal multiphase digital bank of filters that the signal processing integrated circuit board comprises high-speed AD converter, is made up of extensive field programmable logic control device, 1.5～20Mhz shortwave of input, or the ultrashort wave signal of 20～3000Mhz after said high-speed AD converter sampling, realize multi channel parallel processing through said complex signal multiphase digital bank of filters.

Further, said 1.5～20Mhz short-wave band radio-frequency front-end comprises first variable attenuator, is connected first alternative behind said first variable attenuator and cuts and close, be connected said first alternative and cut second alternative after closing and cut and close, be connected on first alternative and cut and close and second alternative cuts the amplifier that closes wherein on the circuit, is connected said second alternative and cuts the 3rd multi-channel switch that closes output, be serially connected in 10 groups of band pass filters and the 4th multi-channel switch between the 3rd multi-channel switch and the 4th multi-channel switch.

Further, other filtering frequency range of the branch of said 10 groups of band pass filters is:

1.5～2Mhz、2～4Mhz、4～6Mhz、6～8Mhz、8～10Mhz、10～12Mhz、12～14Mhz、14～16Mhz、16～18Mhz、18～20Mhz。

Further, the ultrashort wave radio-frequency front-end of said 20～3000Mhz comprise second variable attenuator, be connected the 5th multi-channel switch behind said second variable attenuator, be serially connected in 8 groups of band pass filters, the 6th multi-channel switch between the 5th multi-channel switch and the 6th multi-channel switch, be connected the first stepping amplifier of said the 6th multi-channel switch output, second frequency mixer after being connected first frequency mixer behind the said first stepping amplifier, being connected the 3rd variable attenuator behind said first frequency mixer and being connected said the 3rd variable attenuator.

Further, the first intermediate-freuqncy signal frequency setting of said first frequency mixer output is that 980Mhz, bandwidth are 20Mhz, and the second intermediate-freuqncy signal frequency setting of said second frequency mixer output is that 70Mhz, bandwidth are 15Mhz.

Further, saidly realizing multi channel parallel processing through said complex signal multiphase digital bank of filters, specifically is to be divided into parallel D road through the sampled value y (n) of following formula after with the high-speed AD converter sampling:

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">j</figure-callout>}\frac{2\mathrm{\&pi;}}{D}\mathrm{kp}}$

$=\mathrm{DFT}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\},p=\mathrm{0,1},\mathrm{\&Lambda;},D-1.$

The utility model is divided into shortwave and two continuous wave band collections of ultrashort wave with input; Utilize a radio-frequency front-end to carry out different processing respectively; Through the multiphase digital bank of filters in the signal processing integrated circuit board, the sampled value y (n) after the high-speed AD converter sampling is divided into parallel D road, thereby has reduced the burden of subsequent treatment device greatly at last; And then make that the utility model processing speed is faster, also can realize broadband signal full probability signal interception.

Description of drawings

The picture that this description of drawings provided is used for assisting the further understanding to the utility model, constitutes the application's a part, does not constitute the improper qualification to the utility model, in the accompanying drawings:

Fig. 1 is the system architecture diagram of the utility model;

Fig. 2 is 1.5～20Mhz short-wave band structure of radio-frequency front end block diagram;

Fig. 3 is 20～3000Mhz ultrashort wave structure of radio-frequency front end block diagram;

Fig. 4 is the complex signal multiphase digital filter bank structure model of the utility model.

1, short-wave antenna 2, wideband ultrashort wave antenna

3,1.5～20Mhz short-wave band radio-frequency front-end

4, the ultrashort wave radio-frequency front-end of 20～3000Mhz

5, microwave switch 6, signal processing integrated circuit board

7, out-put supply

Embodiment

To combine accompanying drawing and practical implementation method to specify the utility model below, be used for explaining the utility model in the schematic enforcement and the explanation of the utility model, but not as the qualification to the utility model.

Embodiment 1:

As shown in Figure 1; Present embodiment discloses a kind of wideband radio-frequency spectrum monitoring station; The ultrashort wave radio-frequency front-end 4, microwave switch 5 and the signal processing integrated circuit board 6 that comprise short-wave antenna 1, wideband ultrashort wave antenna 2,1.5～20Mhz short-wave band radio-frequency front-end 3,20～3000Mhz also comprise the required output voltage 7 that the required electric energy of each several part work is provided usually certainly; Wherein, short-wave antenna 1 is used to receive the shortwave of 1.5～20Mhz; Wherein, wideband ultrashort wave antenna 2 is used to receive the ultrashort wave of 20～3000Mhz; Wherein, the rf inputs of 1.5～20Mhz short-wave band radio-frequency front-end 3 is connected with short-wave antenna 1, directly output after the short-wave signal segmentation filtering of the 1.5～20Mhz that is used for short-wave antenna is received; Wherein, the rf inputs of the ultrashort wave radio-frequency front-end 4 of 20～3000Mhz is connected with wideband ultrashort wave antenna 2, and the ultrashort wave conversion of signals of the 20～3000Mhz that is used for wideband ultrashort wave antenna 2 is received is the intermediate-freuqncy signal output of 70 ± 7.5Mhz; Wherein, Microwave switch 5 comprises two inputs, an output and the control end that the control input and output are switched; Two inputs connect the output of the ultrashort wave radio-frequency front-end 4 of 1.5～20Mhz short-wave band radio-frequency front-end 3 and 20～3000Mhz respectively; Its output is connected the signal input part of signal processing integrated circuit board 6; Its control end is connected the control signal output ends of signal processing integrated circuit board 6, is used for according to the instruction timesharing of signal processing integrated circuit board the ultrashort wave of 1.5～20Mhz shortwave, 20～3000Mhz being transferred to the signal processing integrated circuit board; Wherein, The complex signal multiphase digital bank of filters that signal processing integrated circuit board 6 comprises high-speed AD converter, is made up of extensive field programmable logic control device, 1.5～20Mhz shortwave of input, or the ultrashort wave signal of 20～3000Mhz after said high-speed AD converter sampling, realize multi channel parallel processing through said complex signal multiphase digital bank of filters.Wherein, saidly realizing multi channel parallel processing through said complex signal multiphase digital bank of filters, specifically is to be divided into parallel D road through the sampled value y (n) of following formula after with the high-speed AD converter sampling:

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">j</figure-callout>}\frac{2\mathrm{\&pi;}}{D}\mathrm{kp}}$

$=\mathrm{DFT}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\},p=\mathrm{0,1},\mathrm{\&Lambda;},D-1.$

As shown in Figure 2,1.5～20Mhz short-wave band radio-frequency front-end 3 comprises the first variable attenuator L1, be connected first alternative behind the first variable attenuator L1 cut close SW1, be connected first alternative cut second alternative that closes behind the SW1 cut close SW2, be connected on first alternative cut close SW1 and second alternative cut close SW2 wherein the amplifier G1 on circuit, be connected second alternative and cut the 3rd multi-channel switch SW3 that closes the SW2 output, be serially connected in 10 groups of band pass filter BRF1-10 and the 4th multi-channel switch SW4 between the 3rd multi-channel switch SW3 and the 4th multi-channel switch SW4.Wherein, other filtering frequency range of the branch of 10 groups of band pass filter BRF1-10 is: 1.5～2Mhz, 2～4Mhz, 4～6Mhz, 6～8Mhz, 8～10Mhz, 10～12Mhz, 12～14Mhz, 14～16Mhz, 16～18Mhz, 18～20Mhz.

As shown in Figure 2, present embodiment has adopted segmentation filter Direct Sampling mode.1.5 the radiofrequency signal of～20Mhz inserts through RFIN, by first variable attenuator L1 decay, decay is 30dB to the maximum.SW1 and SW2 are two 1 and select 2 diverter switches, can select the amplifier G1 of straight-through or 40dB.SW3 and SW4 are two multi-channel switch, are used to select any a group of 10 groups of band pass filter group BRF1-10, are exported by RF OUT afterwards.

As shown in Figure 3, the ultrashort wave radio-frequency front-end of 20～3000Mhz comprises the second variable attenuator L2, be connected the 5th multi-channel switch SW5 behind the second variable attenuator L2, be serially connected in 8 groups of band pass filter BRF1-8, the 6th multi-channel switch SW6 between the 5th multi-channel switch SW5 and the 6th multi-channel switch SW6, be connected the first stepping amplifier G2 of the 6th multi-channel switch SW6 output, the second frequency mixer H2 after being connected the first frequency mixer H1 behind the first stepping amplifier G2, being connected the 3rd variable attenuator L3 behind the said first frequency mixer H1 and being connected the 3rd variable attenuator L3.Wherein, the first intermediate-freuqncy signal frequency setting of first frequency mixer H1 output is that 980Mhz, bandwidth are 20Mhz, and the second intermediate-freuqncy signal frequency setting of second frequency mixer H2 output is that 70Mhz, bandwidth are 15Mhz.

As shown in Figure 3,20～3000Mhz ultrashort wave radio-frequency front-end 4 has adopted typical Wideband Intermediate Frequency mode.The radiofrequency signal of 20～3000Mhz inserts through RF IN, and by second variable attenuator L2 decay, the attenuation change scope is 1～30dB.SW5 and SW6 are two multi-channel switch, are used to select any a group of 8 groups of band pass filter group BRF1-8.Export first intermediate-freuqncy signal behind the first frequency mixer H1 but radiofrequency signal is amplified through the stepping amplifier G2 of 30dB after bank of filters output, the first intermediate-freuqncy signal frequency setting is 980Mhz, bandwidth 20Mhz.By the 3rd variable attenuator L3 decay, the attenuation change scope is 1～10dB then.Behind the second frequency mixer H2, export second intermediate-freuqncy signal again, the second intermediate-freuqncy signal frequency setting is 70Mhz, and bandwidth is 15Mhz, after IF OUT output intermediate-freuqncy signal.

Present embodiment is a kind of broadband radio spectrum monitoring station of realizing based on multinomial digital filter bank; It comprises 1.5～3000Mhz broadband receiver (1.5～30Mhz short-wave band radio-frequency front-end and 30Mhz～3000Mhz ultrashort wave radio-frequency front-end two parts), based on the signal processing integrated circuit board (containing high-speed AD converter) of complex signal multiphase digital bank of filters and corresponding peripheral hardware and interface; The extraction factor of adjusting this complex signal multiphase digital bank of filters is to realize the parallel processing of a plurality of channels, to realize the full probability signal interception of high speed, broadband signal.

Wherein, 1.5～30Mhz short-wave band radio-frequency front-end 3 and 30Mhz～3000Mhz ultrashort wave radio-frequency front-end 4 two parts, its technology path is the basis with software radio SDR, considers to adopt two kinds of technical systems.Because the short wave channel frequency range between 2～30Hhz, can adopt direct radio frequency sampling framework; As for 30Mhz～3000Mhz ultrashort wave radio-frequency front-end, can adopt Wideband Intermediate Frequency bandpass sampling mode.This sampling architectures based on software radio is relevant with switching rate and the operating frequency of follow-up high-speed AD converter A/D.

Wherein, Signal processing integrated circuit board 6 comprises high-speed AD converter; Complex signal multiphase digital bank of filters through extensive field programmable logic control device FPGA realization; Said high-speed AD converter has adopted the chip of 100MSps switching rate, 16 bit resolutions, improving the dynamic range of system as much as possible.MSps promptly is: 1,000,000 numbers of per second analog to digital converter conversion.

As shown in Figure 1; The signal of different frequency range is handled through different radio-frequency front-end after 2 select 1 microwave switch to switch back (switching command signal is handled integrated circuit board and sent) entering signal disposable plates to stick into capable signal processing, in the function of handling the inner multiphase digital bank of filters through extensive field programmable logic control device FPGA realization of integrated circuit board.Multiphase digital bank of filters specific algorithm structure is Fig. 4, and is specific as follows:

Sampled value y (n) after the high-speed ADC sampling is decomposed into the two paths of signals of quadrature, that is:

y ₀(n)＝Ｉ(n)+iQ(n)

The data of each channel that behind D item plural number multiphase filtering, obtains again are:

$y_k\left(m\right)=[y\left(n\right)e^{j{\mathrm{\&omega;}}_{k}n}*h\left(n\right)]\&CenterDot;\underset{n}{\mathrm{\&Sigma;}}\mathrm{\&delta;}(n-\mathrm{mD})=\underset{i}{\mathrm{\&Sigma;}}y(n-i)e^{j{\mathrm{\&omega;}}_{k}n}h\left(i\right)\&CenterDot;\underset{n}{\mathrm{\&Sigma;}}\mathrm{\&delta;}(n-\mathrm{mD})$

$=\underset{i}{\mathrm{\&Sigma;}}y(\mathrm{mD}-i)e^{j{\mathrm{\&omega;}}_k\mathrm{mD}}h\left(i\right)$

And with y _k(m) be divided into parallel D road:

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\underset{i}{\mathrm{\&Sigma;}}y(\mathrm{mD}-\mathrm{iD}-p)e^{j{\mathrm{\&omega;}}_k(\mathrm{mD}-\mathrm{iD}-p)}h(\mathrm{iD}+p)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}[y_p\left(m\right)e^{j{\mathrm{\&omega;}}_k\mathrm{mD}}*h_p\left(m\right)]e^{-j{\mathrm{\&omega;}}_{k}p}$

Because sequence of complex numbers real part and imaginary part phase difference of half sampled point, i.e. not alignment of the phase place of real part and imaginary part will address this problem, and must add one group of delay correction filter, can adopt with next group: Make the unit impulse response of delay correction filter be respectively h ₁(n) and h _Q(n, then: I (n)=[x (2n) (1) ⁿ* h ₁, (n), Q (n)=[x (2n) (1) ⁿ] * h _Q(n), with the levoform substitution

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">j</figure-callout>}\frac{2\mathrm{\&pi;}}{D}\mathrm{kp}}$

$=\mathrm{DFT}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\},p=\mathrm{0,1},\mathrm{\&Lambda;},D-1$

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\{y_p\left(l\right){(-1)}^{\mathrm{lD}}{e}^{\frac{\mathrm{j\&pi;<figure-callout\; id="2"\; label="l"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">l</figure-callout>}}{2}}*h_p\left(l\right)]\&CenterDot;\underset{l}{\mathrm{\&Sigma;}}\mathrm{\&delta;}(l-2m)\&CenterDot;e^{-j\frac{(2D-1)\mathrm{\&pi;}}{2D}p}\}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">j</figure-callout>}\frac{2\mathrm{\&pi;}}{D}\mathrm{kp}}$

$=\mathrm{DFT}\{y_p\left(l\right){(-1)}^{\mathrm{lD}}{e}^{\frac{\mathrm{j\&pi;<figure-callout\; id="2"\; label="l"\; filenames="HSA00000741116100011.png"\; state="\{\{state\}\}">l</figure-callout>}}{2}}*h_p\left(l\right)]\&CenterDot;\underset{l}{\mathrm{\&Sigma;}}\mathrm{\&delta;}(l-2m)\&CenterDot;e^{-j\frac{(2D-1)\mathrm{\&pi;}}{2D}p}\},p=\mathrm{0,1},\mathrm{\&Lambda;},D-1$

Following formula y _k(m) the discrete series y (n) after the analog-to-digital conversion is divided into parallel D road, can improves the ability of process information so greatly.

More than technical scheme that the utility model embodiment is provided carried out detailed introduction; Used concrete example among this paper principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims (6)

1. wideband radio-frequency spectrum monitoring station is characterized in that:

This device comprises ultrashort wave radio-frequency front-end (4), microwave switch (5) and the signal processing integrated circuit board (6) of short-wave antenna (1), wideband ultrashort wave antenna (2), 1.5～20Mhz short-wave band radio-frequency front-end (3), 20～3000Mhz;

Wherein, said short-wave antenna (1) is used to receive the shortwave of 1.5～20Mhz;

Wherein, wideband ultrashort wave antenna (2) is used to receive the ultrashort wave of 20～3000Mhz;

Wherein, the rf inputs of said 1.5～20Mhz short-wave band radio-frequency front-end (3) is connected with said short-wave antenna (1), directly output after the short-wave signal segmentation filtering of the 1.5～20Mhz that is used for short-wave antenna (1) is received;

Wherein, The rf inputs of the ultrashort wave radio-frequency front-end (4) of said 20～3000Mhz is connected with said wideband ultrashort wave antenna (3), and the ultrashort wave conversion of signals of the 20～3000Mhz that is used for wideband ultrashort wave antenna (2) is received is the intermediate-freuqncy signal output of 70 ± 7.5Mhz;

Wherein, Said microwave switch (5) comprises two inputs, an output and the control end that the control input and output are switched; Two inputs connect the output of the ultrashort wave radio-frequency front-end (4) of 1.5～20Mhz short-wave band radio-frequency front-end (3) and 20～3000Mhz respectively; Its output is connected the signal input part of signal processing integrated circuit board (6); Its control end is connected the control signal output ends of signal processing integrated circuit board (6), is used for according to the instruction timesharing of signal processing integrated circuit board (6) ultrashort wave of 1.5～20Mhz shortwave, 20～3000Mhz being transferred to signal processing integrated circuit board (6);

Wherein, The complex signal multiphase digital bank of filters that signal processing integrated circuit board (6) comprises high-speed AD converter, is made up of extensive field programmable logic control device, 1.5～20Mhz shortwave of input, or the ultrashort wave signal of 20～3000Mhz after said high-speed AD converter sampling, realize multi channel parallel processing through said complex signal multiphase digital bank of filters.

2. wideband radio-frequency spectrum according to claim 1 monitoring station is characterized in that said 1.5～20Mhz short-wave band radio-frequency front-end comprises first variable attenuator, is connected first alternative behind said first variable attenuator and cuts and close, be connected said first alternative and cut second alternative after closing and cut and close, be connected on first alternative and cut and close and second alternative cuts the amplifier that closes wherein on the circuit, is connected said second alternative and cuts the 3rd multi-channel switch that closes output, be serially connected in 10 groups of band pass filters and the 4th multi-channel switch between the 3rd multi-channel switch and the 4th multi-channel switch.

3. wideband radio-frequency spectrum according to claim 2 monitoring station is characterized in that other filtering frequency range of branch of said 10 groups of band pass filters is: 1.5～2Mhz, 2～4Mhz, 4～6Mhz, 6～8Mhz, 8～10Mhz, 10～12Mhz, 12～14Mhz, 14～16Mhz, 16～18Mhz, 18～20Mhz.

4. wideband radio-frequency spectrum according to claim 1 monitoring station is characterized in that the ultrashort wave radio-frequency front-end of said 20～3000Mhz comprises second variable attenuator, is connected the 5th multi-channel switch behind said second variable attenuator, is serially connected in 8 groups of band pass filters, the 6th multi-channel switch between the 5th multi-channel switch and the 6th multi-channel switch, is connected the first stepping amplifier of said the 6th multi-channel switch output, second frequency mixer after being connected first frequency mixer behind the said first stepping amplifier, being connected the 3rd variable attenuator behind said first frequency mixer and being connected said the 3rd variable attenuator.

5. wideband radio-frequency spectrum according to claim 4 monitoring station; The first intermediate-freuqncy signal frequency setting that it is characterized in that said first frequency mixer output is that 980Mhz, bandwidth are 20Mhz, and the second intermediate-freuqncy signal frequency setting of said second frequency mixer output is that 70Mhz, bandwidth are 15Mhz.

6. wideband radio-frequency spectrum according to claim 1 monitoring station; It is characterized in that saidly realizing multi channel parallel processing through said complex signal multiphase digital bank of filters, specifically is to be divided into parallel D road through the sampled value y (n) of following formula after with the high-speed AD converter sampling:

$y_k\left(m\right)=\underset{p=0}{\overset{D-1}{\mathrm{\&Sigma;}}}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\}{e}^{-j\frac{2\mathrm{\&pi;}}{D}\mathrm{kp}}$

$=\mathrm{DFT}\{y_p\left(m\right){(-1)}^m*h_p\left(m\right)]\&CenterDot;e^{-j\frac{(D-1)\mathrm{\&pi;}}{D}p}\},p=\mathrm{0,1},\mathrm{\&Lambda;},D-1.$

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