CN208691245U - A kind of ultra-broadband digital satellite beacon receiver based on software radio - Google Patents
A kind of ultra-broadband digital satellite beacon receiver based on software radio Download PDFInfo
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- CN208691245U CN208691245U CN201820929611.8U CN201820929611U CN208691245U CN 208691245 U CN208691245 U CN 208691245U CN 201820929611 U CN201820929611 U CN 201820929611U CN 208691245 U CN208691245 U CN 208691245U
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Abstract
The utility model discloses a kind of ultra-broadband digital satellite beacon receiver based on software radio, the ultra-wide band radio-frequency front end being interconnected including signal and digital signal processing module, and the power module of power supply is provided for the two.Ultra-wide band radio-frequency front end includes variable gain amplifier, orthogonal mixer, local oscillator, the road I amplifier, I path filter, the road I ADC and the road Q amplifier, Q path filter and the road Q ADC.Digital signal processing module includes frequency computing module, power computation module and control interface module.It uses digital signal processing method and adaptive frequency adjusts and gain adjustment, carries out precise frequency and power calculation to satellite beacon signals, and output frequency and power information form antenna rotating platform driving instruction, complete to star process to antenna controller.Have the characteristics that ultra wide band work, dynamic range is big, integrated level is high, stable and reliable for performance, versatile.
Description
Technical field
The utility model relates to a kind of ultra-broadband digital satellite beacon receivers, and in particular to one kind is based on software radio
The ultra-broadband digital satellite beacon receiver of technology, belongs to technical field of satellite communication.
Background technique
With the continuous development of satellite technology, satellite communication is with the features such as its reliability is high, good confidentiality, fast transmission speed
It is widely used in military affairs, news, fire-fighting, speedily carries out rescue work, the fields such as business, is designing and producing the manufacturer of satellite receiving terminal and equipment just
It shoots up like the mushrooms after rain, so that the price of Satellite Communication Receive terminal and equipment constantly drops, and towards generalization, small
The directions such as type are developed.
Satellite beacon signals are satellite launchs, characterization satellite exists and its a kind of distinctive signal of correlated characteristic, it is adopted
With simple signal, foundation is provided for the search of satellite ground tracking telemetry and command station, measurement and tracking satellite.Satellite beacon receiver on ground
After receiving beacon signal, beacon signal is converted to the signal proportional to its watt level it is sent in antenna controller and formed
Antenna-steering instructions drive antenna rotating platform according to antenna-steering instructions, so that antenna alignment satellite, to be better achieved to defending
The reception of star signal message.
It since satellite is in space environment, is influenced by various factors such as temperature, own beacon signal has certain frequency
Rate and amplitude shift, meanwhile, signal is in transmission process to the ground, and by external environmental interference, beacon signal can be generated further
Frequency and amplitude convert, and the frequency and amplitude for the beacon signal that satellite beacon receiver receives on ground can be in a certain ranges
Interior dynamic change brings certain trouble to the accurate reception of beacon signal.
In order to effectively drive antenna alignment satellite, to obtain better reception, satellite beacon receiver is usually required that
In the case where muting sensitivity, large range of frequency and amplitude shift can be fought, and meet miniaturization, low function as much as possible
The requirement of system design of consumption and low cost.In traditional satellite beacon receiver, usual way is using based on simulation side
The superhet phase lock loop locks of formula input beacon signal, to improve Signal-to-Noise, then obtain input letter using coherent demodulation
Number amplitude and error signal.But that there are equipment interoperability is poor for this method, lock speed is slow, equipment is more complex, debugging and system
Make the shortcomings such as difficulty, higher cost.
With the development of satellite technology, satellite frequency it is continuous broadening, other than traditional L-band, C-band, Ku wave band,
Newly-increased Ka wave band even Q-band satellite-signal, beacon signal is after prime low-converter amplifies down conversion process at this time, intermediate frequency
Signal frequency covering will substantially expand to 0.95~4.2GHz ultra wide band range from traditional L-band (i.e. 0.95~2.15GHz).
It is usually in simulation process although current digital processing technology has partially been introduced into the development of satellite beacon receiver
Numerically controlled method is used on the basis of mode, or adds digital processing part in the rearmost end of simulation process.Due to
Its radio-frequency front-end still uses analog form to handle, and processing frequency range is limited, causes performance still lower, it is difficult to meet satellite
The development need of communication engineering generalization, miniaturization is unfavorable for being widely used on a large scale.Therefore, a kind of ultra wide band, complete is developed
Covering, the good digital satellite beacon receiver that dynamic range is big, good just become the utility model and want to solve the problems, such as.
Summary of the invention
In view of above-mentioned existing situation and deficiency, the utility model proposes a kind of ultra wide band number based on software and radio technique
Word satellite beacon receiver, using the radio-frequency front-end under radio technology and digital information control to the larger range received
Frequency and the satellite beacon signals of amplitude shift carry out digitized processing, and carry out signal frequency using digital signal processing module
Accurate calculating and gain control, the digitlization for being finally completed satellite beacon signals power and frequency accurate information with power is defeated
Out, accurate foundation is provided for realization satellite antenna turning table control.
On specific framework, as shown in Figure 1, before the utility model is by the ultra-wide band radio-frequency based on software radio framework
End, digital signal processing module and power module three parts constitute digital satellite beacon receiver, and in extraneous antenna controller
Coordinated control under, complete each section between the angle of co-ordination and antenna rotating platform control.
Ultra-wide band radio-frequency front end uses software radio framework, according to preset bandwidth and gain information, by what is received
Satellite beacon signals are amplified, are filtered, and are finally down-converted to zero intermediate frequency signals, and carry out digitized processing, output by ADC
Into back-end digital signal processing module.Software radio uses zero intermediate frequency band logical sampling software radio, has radio circuit
Simply, work belt is wide, signal in receiving channel is not easy the advantages of being distorted.Digitized processing later makes the structure to waveform
Better adaptability.Zero intermediate frequency software radio ultra-wide band radio-frequency front end is a highly integrated general radio frequency receiver, can
For receiving RF signal and being amplified the digital signal for being converted into using for base band, as shown in Fig. 2, specifically including variable increasing
Beneficial amplifier, orthogonal mixer, local oscillator, the road I amplifier, the road Q amplifier, I path filter, Q path filter, the road I ADC and the road Q
ADC.Wherein variable gain amplifier amplifies signal, is mixed through orthogonal mixer with local oscillation signal, after amplification
Signal down is zero intermediate frequency signals, and is decomposed into I, Q two-way, and subsequent I, Q two paths of signals passes through the road I amplifier, the amplification of the road Q respectively
Device amplifies, and is filtered amplified I, Q signal subsequently into I path filter, Q path filter, will be mingled in signal
In high-frequency interferencing signal filter out, final I, Q signal pass through the road I ADC and the road Q ADC respectively and carry out digital sample, are output to rear end
In digital signal processing module.Since the bandwidth of variable gain amplifier and local oscillator is very wide, wide operating frequency range ensure that,
Simultaneously as amplifier, ADC, filter are digital configuration mode, big frequency drift has been effectively ensured in wide adaptation range
It is used under range and high dynamic range.
Digital signal processing module specifically includes frequency computing module, power computation module and control interface module.Such as Fig. 3
Shown, digital signal processing module obtains the accurate frequency of input signal by internal frequency computing module and power computation module
Rate information and power information, by carrying out the gain adjustment of prime ultra-wide band radio-frequency front end to the power signal being calculated, from
And improve the dynamic range of receiver.Under the coordination of control interface module, on the one hand digital signal processing module can be sent
On the other hand the power being calculated and frequency information can be output to a day line traffic control by frequency, gain control and adjustment instruction
Device forms corresponding antenna-steering instructions driving antenna rotating platform, completes antenna and accurately track satellite process.
Wherein, frequency computing module obtains the spectrum information of stable input signal based on Fast Fourier Transform (FFT),
And then obtain the frequency information of input beacon signal.To guarantee that antenna receives the accuracy of frequency, which employs " adaptive bandwidths
Technology ", specifically, it is initial to star in the case of a wide range of initial frequency deviation to guarantee, utilize software radio ultra-wide band radio-frequency
The reconfigurable feature of the filtering parameter of front end, the setting of intermediate frequency filtering bandwidth is most wide, it is convenient for extensive search beacon signal.
After searching beacon signal, intermediate-frequency bandwidth setting is narrowed, then ADC sample frequency is reduced, signal processing bandwidth becomes at this time
Narrow, the signal frequency and range signal of module output are more accurate.Power computation module is according to the calculating of Fast Fourier Transform (FFT)
As a result, carrying out performance number and signal-to-noise ratio computation, under based on ultra-wide band radio-frequency front end work optimum state, amplitude is finally obtained most
Specific performance number and signal-to-noise ratio corresponding to big value Frequency point realize the power information transmission of outwardly antenna controller.
For the dynamic range for expanding receiver, " adaptive gain processing technique " is used in power computation module, specifically
For, power computation module adjusts the increasing of variable gain amplifier in ultra-wide band radio-frequency front end according to the performance number being calculated
Benefit, judges whether ultra-wide band radio-frequency front-end gain meets the requirements.When power is excessive or too small, power computation module passes through control
The adjustment order of interface module output gain, carries out gain adjustment to ultra-wide band radio-frequency front end, the signal power satisfaction of output
The problems such as asking, preventing I, Q digital output signal intensity saturation or too small intensity, both can be to avoid signal strength is too big and goes out
Existing harmonic wave, but can avoid signal strength it is too small and the problems such as can not detect, to improve the dynamic of whole satellite beacon receiver
State range.
The effect of control interface module is: on the one hand receiving frequency, the gain preset instruction of extraneous antenna controller, completes
Frequency, gain preset instruction and later period adjustment instruction and frequency and power information are at ultra-wide band radio-frequency front end and digital signal
The transmission between module is managed, on the other hand the power being calculated and frequency information can be output to extraneous antenna controller
In, it forms antenna-steering instructions and drives antenna rotating platform, complete antenna tracking satellite process.
Power module is connected with above-mentioned module, provides stable DC source for above-mentioned modules.
The utility model is achieved through the following technical solutions:
A kind of ultra-broadband digital satellite beacon receiver based on software radio, the ultra wide band being interconnected including signal
Radio-frequency front-end and digital signal processing module, and the power module of power supply is provided for the two；Ultra-wide band radio-frequency front end includes letter
The variable gain amplifier and orthogonal mixer and the local oscillator being connected on orthogonal mixer of number connection, further include connecting all the way
The road I amplifier, I path filter and the road I ADC and another way on orthogonal mixer output end are connected on orthogonal mixer
The road Q amplifier, Q path filter and the road Q ADC on output end；Digital signal processing module includes that the frequency of sequential communication calculates
Module, power computation module, and the control interface module being connected respectively with frequency computing module, power computation module；It is variable
Gain amplifier receives the gain preset or adjustment instruction that digital signal processing module is sent, after the input down coversion received
Intermediate-freuqncy signal carry out variable gain amplification；Local oscillator receives the frequency preset or adjustment instruction that digital signal processing module is sent,
The intermediate-freuqncy signal after the input down coversion received is mixed together with orthogonal mixer, by the defeated of variable gain amplifier
The further frequency reducing of signal is zero intermediate frequency signals out, and is decomposed into I, Q two-way；The road I amplifier, I path filter, the road I ADC and Q
Road amplifier, Q path filter, the road Q ADC quadrature mixers export respectively the road I signal and the road Q signal are amplified, are filtered
With digital sampling processing, and I, Q two-way digital information are exported into digital signal processing module；Frequency computing module is with quick Fu
In based on leaf transformation, obtain the digital spectrum for receiving signal, it is right to calculate Amplitude maxima Frequency point institute in signal digital spectrum
The specific frequency values answered, are sent collectively in power computation module, and are sent out by control interface module to ultra-wide band radio-frequency front end
Frequency adjustment instruction out；Power computation module calculates in the signal digital spectrum received corresponding to Amplitude maxima Frequency point
Specific performance number and signal-to-noise ratio, judge whether performance number is saturated and whether signal-to-noise ratio meets the requirements, and pass through control interface mould
Block issues gain adjustment instruction to ultra-wide band radio-frequency front end；Control interface module is responsible for digital signal processing module and is penetrated with ultra wide band
Information transmission between frequency front end and extraneous antenna controller.
A kind of beneficial effect of ultra-broadband digital satellite beacon receiver based on software radio described in the utility model
Include:
1, precise frequency and power calculation are carried out to satellite beacon signals using digital signal processing method, and is output to day
Lane controller forms antenna-steering instructions and drives antenna rotating platform, enables the antenna to be accurately aimed at satellite.
2, ultra-wide band radio-frequency front end and digital signal processing module can be in the monolithic software wireless electrical chips of high integration
It is realized on digital signal processing chip, having the receiver, ultra wide band work, dynamic range is big, integrated level is high, performance is steady
The features such as fixed reliable, versatile.
3, " adaptive frequency calculating " and " adaptive gain control " two skills have been used in digital signal processing module
Art, can accurate frequency test signal and accurate test signal power, enable a system to signal input power change very greatly,
Within the scope of big frequency drift, satellite beacon signals are accurately tracked.
4, show that the present apparatus within the scope of 70MHz~6000MHz, can accurately capture maximum frequency drift by test
Reach scholar 1000kHz, amplitude transformation range passes through digital form accurately in -100dBm~-5OdBm beacon signal
Output power value greatly exceeds the precision and performance for having beacon receiver on the market.
Detailed description of the invention
Fig. 1 is that a kind of ultra-broadband digital satellite beacon receiver based on software radio described in the utility model uses shape
The structural schematic block diagram of state；
Fig. 2 is the structural block diagram of the ultra-wide band radio-frequency front end；
Fig. 3 is the structural block diagram of the digital signal processing module.
Specific embodiment
With reference to the accompanying drawing 1, Fig. 2, Fig. 3 defend a kind of ultra-broadband digital based on software radio described in the utility model
Star beacon receiver is described in further detail:
A kind of ultra-broadband digital satellite beacon receiver based on software radio described in the utility model, including signal
Interconnected ultra-wide band radio-frequency front end and digital signal processing module, and the power module of power supply is provided for the two.Ultra-wide
It include the variable gain amplifier and orthogonal mixer and the sheet being connected on orthogonal mixer of signal communication with radio-frequency front-end
Vibration, further includes the road I amplifier, I path filter and the road the I ADC being connected on orthogonal mixer output end all the way and another way
The road Q amplifier, Q path filter and the road the Q ADC being connected on orthogonal mixer output end.Digital signal processing module includes suitable
The frequency computing module of sequence connection, power computation module, and the control being connected respectively with frequency computing module, power computation module
Interface module processed.
After it is intermediate-freuqncy signal that extraneous satellite beacon signals are downconverted, variable gain amplifier receives control interface first
The gain preset instruction that module is sent, carries out variable gain amplification to the intermediate-freuqncy signal after the extraneous down coversion received, then
It is mixed through orthogonal mixer with local oscillation signal, is zero intermediate frequency signals by variable gain amplified signal frequency reducing, and be decomposed into I, Q
Two-way, the road I amplifier, I path filter and the road I ADC amplify the road I signal, filters and digitized processing, meanwhile, Q is put on road
Big device, Q path filter and the road Q ADC respectively amplify the road Q signal, filters and digitized processing, and exports two number of I, Q
Word information is into frequency computing module；Then, frequency computing module is based on Fast Fourier Transform (FFT), in conjunction with filtering processing,
The digital spectrum for obtaining receiving signal calculates specific frequency values corresponding to Amplitude maxima Frequency point in signal digital spectrum,
And be sent collectively in power computation module, power computation module calculates Amplitude maxima frequency in the signal digital spectrum received
Specific performance number and signal-to-noise ratio corresponding to rate point judge whether signal-to-noise ratio meets the requirements and whether performance number is saturated, accordingly
Adaptive frequency adjustment instruction or gain adjustment instruction are issued to ultra-wide band radio-frequency front end by control interface module, it is so past
It is multiple, until the signal-tonoise information being calculated is met the requirements, finally, by corresponding to the Amplitude maxima Frequency point being calculated
Specific frequency information and power information are transmitted in extraneous antenna controller by control interface module, and antenna controller controls day
Line turntable carries out position adjustment, completes antenna to star process.
A kind of specific method of reseptance of above-mentioned ultra-broadband digital satellite beacon receiver based on software radio includes:
Step 1: frequency of the antenna controller according to satellite beacon signals to be received, through digital signal processing module to super
Broadband rf front end issues frequency, gain preset instruction, is beacon frequency, band by the reception frequency preset of ultra-wide band radio-frequency front end
Width is set as most wide, and gain is set as maximum.
Step 2: ultra-wide band radio-frequency front end receives the input of the intermediate frequency after LNB down coversion in the frequency range of setting
Signal after amplifying, filter by signal, being down-converted to zero intermediate frequency signals, carries out digitized processing by ADC, finally exports
To digital signal processing module.Wherein, input signal is put by the variable gain amplifier progress signal in ultra-wide band radio-frequency front end
Greatly, be mixed by orthogonal mixer and local oscillation signal, frequency reducing be zero intermediate frequency signals after be decomposed into I, Q two-way, I, Q two paths of signals
Amplify respectively by the road I amplifier and the road Q amplifier, filtered respectively through I path filter and Q path filter, then passes through the road I
The road ADC and Q ADC carries out digital sample respectively, is finally output in digital signal processing module.
Step 3: the frequency computing module in digital signal processing module believes the number received by internal software
Number carry out Fast Fourier Transform (FFT), obtain receive signal digital spectrum, meanwhile, calculate signal digital spectrum in Amplitude maxima
The corresponding specific frequency values of Frequency point, and be sent collectively in power computation module, power computation module passes through internal software
Calculate the corresponding specific performance number of Amplitude maxima Frequency point and signal-to-noise ratio in receiving signal digital frequency spectrum.
When this example initially searches star, filtering bandwidth is selected as 5MHz, and AD sample rate is 5Msps, Fourier transform
Points are 4096 points, and respective frequencies resolution ratio is 2.4kHz.
Step 4: then represent as power computation module judges signal-to-noise ratio >=6dB and searched beacon signal, number letter
Number processing module is transferred to locking mode；Otherwise, return step two continues searching.
Step 5: frequency computing module issues frequency adjustment instruction to radio-frequency front-end by control interface module, reduce super
The frequency bandwidth of broadband rf front end and the sample frequency of ADC, then, frequency computing module is most freshly harvested according to radio-frequency front-end
Signal recalculates the inscribed digital spectrum collected mail number of locked frequency band, meanwhile, recalculate in signal digital spectrum amplitude most
Specific frequency values corresponding to big value Frequency point, and being sent collectively in power computation module, power computation module to connecing again
The corresponding specific performance number of Amplitude maxima Frequency point and signal-to-noise ratio are calculated in the signal digital spectrum received.Wherein, frequency
Rate adjustment mode is that frequency bandwidth is reduced to frequency corresponding to the signal digital spectrum Amplitude maxima Frequency point being calculated
5~8 times of rate value, ADC sample frequency are reduced to that frequency corresponding to signal digital spectrum Amplitude maxima Frequency point is calculated
10~16 times of rate value.
In this example, it will be filtered according to frequency values corresponding to the signal digital spectrum Amplitude maxima Frequency point being calculated
Bandwidth selection is 2.5MHz, and AD sample rate is 2.5Msps, and the points of Fourier transformation are 4096 points, it is ensured that 0.6kHz's
Frequency resolution.It, can also be right in order to eliminate the influence for modulating spuious information and extraneous environmental noise of satellite beacon signals itself
The result of Fast Fourier Transform (FFT) is filtered operation, that is, filtering bandwidth is used to obtain newest for the Finite Impulse Response filter of 40Hz
Acquire the frequency spectrum and amplitude information of signal.
Step 6: that is, the maximum beyond radio-frequency front-end A/D module handles range value as calculated performance number has been saturated,
Then power computation module sends gain adjustment instruction by control interface module, adjusts to the gain of ultra-wide band radio-frequency front end
It is whole, until finding a suitable gain voltage value, make the work of ultra-wide band radio-frequency front end in optimum state, then, power calculation
Module recalculates after adjustment in radio-frequency front-end signal digital spectrum in locked frequency band corresponding to Amplitude maxima Frequency point
Specific performance number and signal-to-noise ratio.Wherein, gain adjustment mode is to carry out gain adjustment by grade from high to low, first highest is selected to increase
Benefit after searching for and tracing into signal, if signal amplitude is excessive, successively reduces gain, every grade of gain adjustment range is
10dB。
In this example, 5 grades are selected according to the gain interval of 10dB and carries out adaptive yield value adjustment, from high to low, until
A suitable gain voltage value is found, meets the work of ultra-wide band radio-frequency front end signal in the requirement of optimum state.
Step 7: the quality for then representing locking signal is met the requirements as power computation module judges signal-to-noise ratio >=10dB, control
Interface module processed exports in locked frequency band frequency values corresponding to Amplitude maxima Frequency point and power value information to extraneous day
Lane controller, otherwise, return step two re-search for signal.
Frequency values in extraneous antenna controller and power value information are fed back after antenna controller is handled, and form antenna
The control parameter of turntable, complete antenna rotating platform orientation control, realize antenna to star process.
Embodiment one
A kind of ultra-broadband digital satellite beacon receiver based on software radio, comprising: super based on software radio
Broadband rf front end chip AD9361, digital signal processing module chip ZYNQ7010 and power module.
The frequency control that ultra-wide band radio-frequency front-end chip AD9361 is fed back according to digital signal processing module chip ZYNQ7010
System and power control information, the intermediate-freuqncy signal of input are amplified, and be down-converted to the zero of 0-30MHz by orthogonal mixer
Intermediate frequency I, Q signal are output to low-pass filter, and carry out high-speed AD processing, so as to back-end digital signal processing module chip work
Make.Digital signal processing module chip has frequency meter using chip ZYNQ7010, the ZYNQ7010 built-in chip type of XILINX company
Calculate module, power computation module and control interface module.The clock frequency of ZYNQ7010 is 1GHz, utilizes built-in hardware multiplication
Device has very big help to the arithmetic speed for improving signal frequency and power calculation, in addition, being integrated with serial transmission bus in chip
The interfaces such as I2C, serial device interfaces SPI, and the ADC module of built-in 12bit sampling precision, are not only easy to use, also effectively
Hardware cost is reduced, Function Extension is more convenient.AD9361 allows the gain ranging of 75dB, selects according to the gain interval of 15dB
5 typical yield values out.When initial progress signal lookup, high-gain is first selected, after searching and tracing into signal, if signal
Amplitude is excessive, then successively reduces chip gain, is found with meeting the work of ultra-wide band radio-frequency front end signal in optimum state for requirement
One suitable gain voltage value.Power module provides the DC power supply of high stable for each module.Wherein, provide for AD9361+
3.3V ,+1.8V DC power supply provide+1.8V ,+3.3V DC power supply for digital signal processing module.
In this example, ultra-wide band radio-frequency front-end chip, digital signal processing module chip and power module are integrated in one block of electricity
On the plate of road, circuit board uses 10 layers of printed board of 110 × 80mm2, and top layer and bottom are signals layer, meanwhile, also walk part
Power and ground.Wherein, radio frequency analog part only needs an AD9361 chip, and other main signal processing work are in number
It is realized in signal processing module chip ZYNQ7010.The cost and debugging difficulty of system are not only reduced, and is had very high
Level of integrated system, ensure that the performance of system, increase the reliability and versatility of system.
Claims (1)
1. a kind of ultra-broadband digital satellite beacon receiver based on software radio, which is characterized in that mutually interconnected including signal
Logical ultra-wide band radio-frequency front end and digital signal processing module, and the power module of power supply is provided for the two；
The ultra-wide band radio-frequency front end includes the variable gain amplifier of signal communication and orthogonal mixer and is connected to orthogonal
Local oscillator on frequency mixer further includes the road I amplifier, I path filter and the road I being connected on orthogonal mixer output end all the way
ADC and another way are connected on the road Q amplifier, Q path filter and the road Q ADC on orthogonal mixer output end；
The digital signal processing module includes the frequency computing module of sequential communication, power computation module, and respectively and frequency
The connected control interface module of rate computing module, power computation module；
The variable gain amplifier receives the gain preset or adjustment instruction that digital signal processing module is sent, to what is received
Intermediate-freuqncy signal after inputting down coversion carries out variable gain amplification；
The local oscillator receives the frequency preset or adjustment instruction that digital signal processing module is sent, and docks together with orthogonal mixer
Intermediate-freuqncy signal after the input down coversion received is mixed, and is zero by the further frequency reducing of the output signal of variable gain amplifier
Intermediate-freuqncy signal, and it is decomposed into I, Q two-way；
The road I amplifier, I path filter, the road I ADC and the road Q amplifier, Q path filter, the road Q ADC are respectively to orthogonal mixed
The road the I signal and the road Q signal of frequency device output amplify, filters and digital sampling processing, and exports I, Q two-way digital information and arrive
In digital signal processing module；
The frequency computing module is obtained the digital spectrum for receiving signal, is calculated signal number based on Fast Fourier Transform (FFT)
Specific frequency values corresponding to Amplitude maxima Frequency point, are sent collectively in power computation module in word frequency spectrum, and pass through control
Interface module processed issues frequency adjustment instruction to ultra-wide band radio-frequency front end；
The power computation module calculates specific function corresponding to Amplitude maxima Frequency point in the signal digital spectrum received
Rate value and signal-to-noise ratio judge whether performance number is saturated and whether signal-to-noise ratio meets the requirements, and by control interface module to super
Broadband rf front end issues gain adjustment instruction；
The control interface module be responsible for digital signal processing module and ultra-wide band radio-frequency front end and extraneous antenna controller it
Between information transmission.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988830A (en) * | 2020-01-03 | 2020-04-10 | 零八一电子集团有限公司 | Multi-frequency-band radar target simulator |
| CN114257258A (en) * | 2021-11-24 | 2022-03-29 | 杭州万高科技股份有限公司 | Wireless radio frequency receiver and data detection method |
-
2018
- 2018-06-15 CN CN201820929611.8U patent/CN208691245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988830A (en) * | 2020-01-03 | 2020-04-10 | 零八一电子集团有限公司 | Multi-frequency-band radar target simulator |
| CN114257258A (en) * | 2021-11-24 | 2022-03-29 | 杭州万高科技股份有限公司 | Wireless radio frequency receiver and data detection method |
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| CP03 | Change of name, title or address |
Address after: 215505 3rd floor, R & D building, No.5, National University Science and Technology Park entrepreneurial base, No.1 Jindu Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Dashun Weier Technology Co.,Ltd. Address before: 215500 3rd floor, R & D building, No.5, National University Science and Technology Park entrepreneurial base, No.1 Jindu Road, Changshu high tech Industrial Development Zone, Changshu City, Suzhou City, Jiangsu Province Patentee before: CHANGSHU DASHUNWEIER COMMUNICATION TECHNOLOGY Co.,Ltd. |