CN108880718A - Frequency modulation broadcasting real-time monitoring system, receiver and frequency modulation broadcasting method of real-time - Google Patents
Frequency modulation broadcasting real-time monitoring system, receiver and frequency modulation broadcasting method of real-time Download PDFInfo
- Publication number
- CN108880718A CN108880718A CN201710334065.3A CN201710334065A CN108880718A CN 108880718 A CN108880718 A CN 108880718A CN 201710334065 A CN201710334065 A CN 201710334065A CN 108880718 A CN108880718 A CN 108880718A
- Authority
- CN
- China
- Prior art keywords
- signal
- mentioned
- real
- audio
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
- H04B17/18—Monitoring during normal operation
Abstract
The present invention provides a kind of frequency modulation broadcasting real-time monitoring system, receiver and frequency modulation broadcasting method of real-time, which is characterized in that including：Signal generator, output audio signal；Transmitter receives audio signal, emits audio modulation signal after modulated；And receiver, it receives audio modulation signal and is demodulated, obtain audio demodulation signal, wherein receiver includes real-time monitoring module, receives and handles audio signal and audio demodulation signal in real time, to export transmitter performance index parameter.The technical solution provided through the invention can complete the monitoring of frequency-modulated broadcast transmitter performance under the premise of not using other special test equipment equipment, and not need to interrupt the normal work of frequency-modulated broadcast transmitter, to meet the needs of real-time monitoring.
Description
Technical field
The present invention relates to frequency-modulated broadcast transmitter testing fields, particularly, be related to a kind of frequency modulation broadcasting real-time monitoring system,
Receiver and frequency modulation broadcasting method of real-time with real time monitoring function.
Background technique
In the prior art, any one broadcasting station, no matter its scale, such as：State radio, provincial radio station,
City-level radio station, radio station at county level, township level radio station, campus radio station, enterprises and institutions radio station and army's barracks radio station etc., are all broadcast by audio
Control equipment, voiceband facility, frequency-modulated broadcast transmitter and transmitting antenna feeder composition.The side that frequency-modulated broadcast transmitter passes through frequency modulation
Formula sends audio signal.
In traditional frequency-modulated broadcast transmitter performance test, receiver usually requires to complete noise by special equipment
It is both inconvenient or lack effect than equipment such as the measurements, such as decibel meter, distortion factor instrument of indexs such as, the distortion factor and frequency response values
Rate.In addition, frequency-modulated broadcast transmitter performance test needs to interrupt normal broadcast program, i.e. off-line test, it can not be wide in frequency modulation
The performance indicator for broadcasting real-time monitoring frequency-modulated broadcast transmitter when transmitter works normally, is not suitable with current frequency-modulation broadcasting transmitter
The demand of performance real-time monitoring.
Summary of the invention
The technical problem to be solved by the present invention is to：In frequency-modulated broadcast transmitter performance test, need by special equipment
Carry out measurement performance index, cause test process to lack convenience and efficiency, and test must carry out offline, needs to interrupt normal
Broadcast program is not suitable with the demand of current frequency-modulation broadcasting transmitter performance real-time monitoring.
To solve the above problems, the embodiment of the invention provides a kind of frequency modulation broadcasting real-time monitoring systems, including：Signal hair
Raw device, output audio signal；Transmitter receives audio signal, emits audio modulation signal after modulated；And receiver, it connects
Radio reception frequency modulation is simultaneously demodulated, and audio demodulation signal is obtained, wherein receiver includes real-time monitoring module, is received simultaneously
Processing audio signal and audio demodulation signal in real time, to export transmitter performance index parameter.
Optionally, above-mentioned real-time monitoring module includes：Sample-synchronous unit distinguishes audio signal and audio demodulation signal
It sampled, postponed and Fourier transformation processing, and processing result scanned for and judged；And computing unit, according to place
Reason result is calculated, to obtain transmitter performance index parameter.
Optionally, the sample frequency of above-mentioned sample-synchronous unit is at least 44.1KHZ, and sampling bit wide is at least 16.
Optionally, above-mentioned sample-synchronous unit and above-mentioned computing unit include field programmable gate array chip, number letter
Number processing at least one of chip and the processing chip based on ARM framework.
Optionally, above-mentioned audio signal is tone signal, stereo signal or monophonic signal.
Optionally, above-mentioned transmitter performance index parameter includes at least one in signal-to-noise ratio, the distortion factor and frequency response values
Kind.
The embodiment of the invention also provides a kind of receivers with frequency modulation broadcasting real time monitoring function, connect from external device (ED)
Audio signal and the audio modulation signal through ovennodulation are received, and the audio modulation signal received is demodulated, obtains audio
Demodulated signal, including：Real-time monitoring module receives and handles audio signal and audio demodulation signal in real time, to export transmitter
Performance indicator parameter.
Optionally, above-mentioned real-time monitoring module includes：Sample-synchronous unit distinguishes audio signal and audio demodulation signal
It sampled, postponed and Fourier transformation processing, and processing result scanned for and judged；And computing unit, according to place
Reason result is calculated, to obtain transmitter performance index parameter.
The embodiment of the invention also provides a kind of frequency modulation broadcasting method of real-time, include the following steps：Step S1：By believing
Number generator sends audio signal；Step S2：Above-mentioned audio signal is received by transmitter, voice modulation letter is emitted after modulated
Number；And step S3：Audio modulation signal is received by receiver and is demodulated, obtains audio demodulation signal, wherein by receiving
Real-time monitoring module in machine receives and handles in real time audio signal and audio demodulation signal, to export transmitter performance index ginseng
Number.
Optionally, above-mentioned steps S3 specifically includes following steps：Step S31：By sample-synchronous unit to audio signal and
Audio demodulation signal sampled respectively, is postponed and Fourier transformation processing, and processing result is scanned for and judged；And
Step S32：It is calculated by computing unit according to above-mentioned processing result, to obtain transmitter performance index parameter.
Optionally, above-mentioned steps S31 specifically includes following steps：Step S311：First is obtained to sampled audio signal to adopt
Sample signal obtains the second sampled signal to audio demodulation signal sampling, and is obtained by relevant treatment and relevant peaks maximum value search
Time delay to above-mentioned second sampled signal relative to the first sampled signal；Step S312：When the delay of first sampled signal is above-mentioned
It delays and carries out Fourier transformation and obtain first Fourier's signal, search for obtain the first Amplitude maxima and right by Amplitude maxima
The first frequency answered, and the second sampled signal progress Fourier transformation is obtained into second Fourier's signal, pass through Amplitude maxima
Search obtains the second Amplitude maxima and corresponding second frequency；And step S313：Judge whether first frequency is equal to second
Frequency carries out relevant treatment and relevant peaks maximum value search to audio signal and audio demodulation signal again if unequal, if
It is equal, then execute subsequent step.
Optionally, above-mentioned steps S32 specifically includes following steps：Step S321：First Fourier's signal is in first frequency
The value at place is the first complex values, and value of the second Fourier's signal at second frequency is the second complex values, most according to the first amplitude
The ratio of big value and the second Amplitude maxima estimates amplitude difference values, and according to the ratio of the first complex values and the second complex values,
And first frequency estimates sampling frequency offset estimated value；Step S322：To first Fourier's signal compensation amplitude difference values and sampling
Offset estimation value obtains the first thermal compensation signal；Step S323：Second Fourier's signal subtracts the first thermal compensation signal, obtains noise
Signal；And step S324：According to second Fourier's signal and noise signal, transmitter performance index parameter is calculated.
Optionally, in above-mentioned steps S311, the sample frequency sampled to audio signal and audio demodulation signal is extremely
It is less 44.1KHZ, sampling bit wide is at least 16.
Optionally, in above-mentioned steps S1, audio signal is tone signal, stereo signal or monophonic signal.
Optionally, in above-mentioned steps S3, transmitter performance index parameter includes signal-to-noise ratio, the distortion factor and frequency response values
At least one of.
Compared with prior art, technical solution of the present invention has the advantages that：
Frequency modulation broadcasting real-time monitoring system, receiver and the frequency modulation broadcasting method of real-time provided according to the present invention, can
To be directed to the performance monitoring of frequency-modulated broadcast transmitter, under the premise of not using other special test equipment equipment, frequency modulation is completed
The real-time monitoring of broadcast transmitter performance improves the convenience and efficiency of monitoring.In addition, frequency-modulated broadcast transmitter performance test
The normal work for not needing interruption frequency-modulated broadcast transmitter, can monitor the performance indicator of frequency-modulated broadcast transmitter in real time online,
The demand of current frequency-modulation broadcasting transmitter performance real-time monitoring is better adapted to.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the specific embodiment of frequency modulation broadcasting real-time monitoring system of the present invention；
Fig. 2 is a kind of flow diagram of the specific embodiment of frequency modulation broadcasting method of real-time of the present invention；
Fig. 3 is to sample in a kind of frequency modulation broadcasting method of real-time of the present invention to audio signal and audio demodulation signal
With the flow diagram of the specific embodiment of processing；And
Fig. 4 be in a kind of frequency modulation broadcasting method of real-time of the present invention to audio signal and audio demodulation signal at
The flow diagram of reason, the specific embodiment of judgement and calculating.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
The embodiment of the invention provides a kind of frequency modulation broadcasting real-time monitoring systems.As shown in Figure 1, Fig. 1 is of the invention a kind of
The schematic diagram of the specific embodiment of frequency modulation broadcasting real-time monitoring system.The frequency modulation broadcasting real-time monitoring system includes signal generator
1, transmitter 2 and receiver 3.1 output audio signal of signal generator, wherein audio signal can be tone signal, stereo letter
Number or monophonic signal.Transmitter 2 receives audio signal, and emits audio modulation signal after audio signal is modulated.Such as
Fruit transmitter 2 is stereo type, then signal generator 1 exports stereo signal；And if transmitter 2 is monophone channel type, believe
Number generator 1 exports monophonic signal.Receiver 3 receives audio modulation signal and is demodulated, and obtains audio demodulation signal.Its
In, structure, the function of signal generator 1 and transmitter 2 are consistent with the prior art, therefore repeat no more in this.Transmitter 2 is to audio
The modulation of signal and receiver 3 are also consistent with the prior art to the demodulation of audio modulation signal, repeat no more in this.
Further, receiver 3 further includes real-time monitoring module 30, receives and handles what signal generator 1 exported in real time
Audio signal and receiver 3 carry out the audio demodulation signal obtained after demodulation process, to export transmitter performance index parameter.
Wherein, real-time monitoring module 30 is integrated in receiver 3, and transmitter performance index parameter includes signal-to-noise ratio, the distortion factor and frequency
At least one of response.
Real-time monitoring module 30 includes sample-synchronous unit 31 and computing unit 32.Sample-synchronous unit 31 is to audio signal
And audio demodulation signal is sampled respectively, is postponed and Fourier transformation processing, and processing result is scanned for and is judged.Its
In, the sample frequency of sample-synchronous unit 31 is at least 44.1KHZ, and sampling bit wide is at least 16.Computing unit 32 is according to place
Reason result is calculated, to obtain transmitter performance index parameter.Sample-synchronous unit 31 and computing unit 32 include scene can
Program gate array (Field-Programmable Gate Array, FPGA) chip, Digital Signal Processing (Digital
Signal Processing, DSP) at least one of chip and the processing chip based on ARM framework.
The embodiment of the invention also provides a kind of frequency modulation broadcasting method of real-time.As shown in Fig. 2, Fig. 2 is the present invention one
The flow diagram of the specific embodiment of kind frequency modulation broadcasting method of real-time.In one embodiment, this method can be applied to
Aforementioned frequency modulation broadcasting real-time monitoring system.This method includes the following steps：
Step S1：Audio signal is sent by signal generator 1；
Step S2：Audio signal is received by transmitter 2, emits audio modulation signal after modulated；And
Step S3：Audio modulation signal is received by receiver 3 and is demodulated, obtains audio demodulation signal, wherein by connecing
Real-time monitoring module 30 in receipts machine 3 receives and handles audio signal and audio demodulation signal in real time, to export transmitter performance
Index parameter.
In step S2 and step S3, to the modulated process of audio signal, and to the demodulating process of audio modulation signal and
The prior art is consistent, repeats no more in this.
It in step s3, is real-time perfoming to the processing of audio signal and audio demodulation signal.
In step s3, real-time monitoring module 30 makes further the audio signal and audio demodulation signal that receive
Sampling and calculation processing.Fig. 3 is in a kind of frequency modulation broadcasting method of real-time of the present invention to audio signal and audio demodulation signal
The flow diagram for the specific embodiment for being sampled and being handled.As shown in figure 3, step S3 specifically includes the following steps：
Step S31：Audio signal and audio demodulation signal are sampled respectively by sample-synchronous unit 31, postponed and Fu
In leaf transformation handle, and processing result is scanned for and is judged；And
Step S32：It is calculated by computing unit 32 according to above-mentioned processing result, to obtain transmitter performance index ginseng
Number.
In step S31,44.1KHZ is at least to the sample frequency of audio signal and audio demodulation signal, samples bit wide
At least 16.
Fig. 4 be in a kind of frequency modulation broadcasting method of real-time of the present invention to audio signal and audio demodulation signal at
The flow diagram of reason, the specific embodiment of judgement and calculating.As shown in figure 4, step S31 specifically includes the following steps：
Step S311：First sampled signal is obtained to sampled audio signal, second is obtained to audio demodulation signal sampling and is adopted
Sample signal, and by relevant treatment and relevant peaks maximum value search obtain the second sampled signal relative to the first sampled signal when
Prolong；
Step S312：Progress Fourier transformation obtains the first Fourier letter after first sampled signal is postponed above-mentioned time delay
Number, it searches for obtain the first Amplitude maxima and corresponding first frequency by Amplitude maxima, and the second sampled signal is carried out
Fourier transformation obtains second Fourier's signal, searches for obtain the second Amplitude maxima and corresponding second by Amplitude maxima
Frequency；And
Step S313：Judge whether first frequency is equal to second frequency, if unequal, again to audio signal and audio
Demodulated signal carries out relevant treatment and relevant peaks maximum value search and executes subsequent step if equal.
In step S311, relevant treatment is carried out to the first sampled signal and the second sampled signal, and search for relevant peaks most
The position being worth greatly, and then obtain time delay of second sampled signal relative to the first sampled signal.
In step S312, search for first Fourier's signal Amplitude maxima, with obtain the first Amplitude maxima and with
The corresponding first frequency of first Amplitude maxima.The Amplitude maxima of second Fourier's signal is searched for, to obtain the second amplitude most
Big value and second frequency corresponding with the second Amplitude maxima.
In step S313, if first frequency is equal to second frequency, the specific steps of S32 are thened follow the steps.Such as Fig. 4 institute
Show, step S32 specifically includes the following steps：
Step S321：Value of the first Fourier's signal at first frequency is the first complex values, and second Fourier's signal exists
Value at second frequency is the second complex values, estimates amplitude difference according to the ratio of the first Amplitude maxima and the second Amplitude maxima
Different value, and sampling frequency offset estimated value is estimated according to the ratio and first frequency of the first complex values and the second complex values；
Step S322：To first Fourier's signal compensation amplitude difference values and sampling frequency offset estimated value, the first compensation is obtained
Signal；
Step S323：Second Fourier's signal subtracts the first thermal compensation signal, obtains noise signal；And
Step S324：According to second Fourier's signal and noise signal, transmitter performance index parameter is calculated.
It compares it is found that using frequency modulation broadcasting real-time monitoring system, receiver and frequency modulation broadcasting provided by the present invention
Method of real-time can complete frequency-modulation broadcasting transmitter performance under the premise of not using other special test equipment equipment
Monitoring, and test process do not need interrupt frequency-modulated broadcast transmitter normal work, frequency modulation broadcasting can be monitored in real time online
The performance indicator of transmitter, it is more convenient, it is more efficient, and it is real-time to better adapt to current frequency-modulation broadcasting transmitter performance
The demand of monitoring.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (15)
1. a kind of frequency modulation broadcasting real-time monitoring system, which is characterized in that including：
Signal generator, output audio signal；
Transmitter receives above-mentioned audio signal, emits audio modulation signal after modulated；And
Receiver receives above-mentioned audio modulation signal and is demodulated, obtains audio demodulation signal,
Wherein, above-mentioned receiver includes real-time monitoring module, receives and handles above-mentioned audio signal and above-mentioned audio demodulation in real time
Signal, to export transmitter performance index parameter.
2. frequency modulation broadcasting real-time monitoring system as described in claim 1, which is characterized in that above-mentioned real-time monitoring module packet
It includes：
Sample-synchronous unit, above-mentioned audio signal and above-mentioned audio demodulation signal are sampled respectively, postpone and Fourier become
Processing is changed, and processing result is scanned for and judged；And
Computing unit is calculated according to above-mentioned processing result, to obtain above-mentioned transmitter performance index parameter.
3. frequency modulation broadcasting real-time monitoring system as described in claim 2, which is characterized in that wherein, above-mentioned sample-synchronous list
The sample frequency of member is at least 44.1KHZ, and sampling bit wide is at least 16.
4. frequency modulation broadcasting real-time monitoring system as described in claim 2, which is characterized in that wherein, above-mentioned sample-synchronous list
First and above-mentioned computing unit includes field programmable gate array chip, digital signal processing chip and the processing based on ARM framework
At least one of chip.
5. frequency modulation broadcasting real-time monitoring system as described in claim 1, which is characterized in that wherein, above-mentioned audio signal is
Tone signal, stereo signal or monophonic signal.
6. frequency modulation broadcasting real-time monitoring system as described in claim 1, which is characterized in that wherein, above-mentioned transmitter performance
Index parameter includes at least one of signal-to-noise ratio, the distortion factor and frequency response values.
7. a kind of receiver with frequency modulation broadcasting real time monitoring function receives audio signal from external device (ED) and through ovennodulation
Audio modulation signal, and the above-mentioned audio modulation signal received is demodulated, audio demodulation signal is obtained, feature exists
In, including：Real-time monitoring module receives and handles in real time above-mentioned audio signal and above-mentioned audio demodulation signal, to export transmitting
Machine performance indicator parameter.
8. receiver as described in claim 7, which is characterized in that above-mentioned real-time monitoring module includes：
Sample-synchronous unit, above-mentioned audio signal and above-mentioned audio demodulation signal are sampled respectively, postpone and Fourier become
Processing is changed, and processing result is scanned for and judged；And
Computing unit is calculated according to above-mentioned processing result, to obtain above-mentioned transmitter performance index parameter.
9. a kind of frequency modulation broadcasting method of real-time, which is characterized in that include the following steps：
Step S1：Audio signal is sent by signal generator；
Step S2：Above-mentioned audio signal is received by transmitter, emits audio modulation signal after modulated；And
Step S3：Above-mentioned audio modulation signal is received by receiver and is demodulated, obtains audio demodulation signal, wherein by upper
It states the real-time monitoring module in receiver and receives and handle in real time above-mentioned audio signal and above-mentioned audio demodulation signal, to export hair
Penetrate machine performance indicator parameter.
10. frequency modulation broadcasting method of real-time as described in claim 9, which is characterized in that above-mentioned steps S3 is specifically included
Following steps：
Step S31：Above-mentioned audio signal and above-mentioned audio demodulation signal are sampled respectively by sample-synchronous unit, postpone and
Fourier transformation processing, and processing result is scanned for and judged；And
Step S32：It is calculated by computing unit according to above-mentioned processing result, to obtain above-mentioned transmitter performance index parameter.
11. frequency modulation broadcasting method of real-time as described in claim 10, which is characterized in that above-mentioned steps S31 is specifically wrapped
Include following steps：
Step S311：First sampled signal is obtained to above-mentioned sampled audio signal, is obtained to above-mentioned audio demodulation signal sampling
Two sampled signals, and above-mentioned second sampled signal is obtained relative to above-mentioned first by relevant treatment and relevant peaks maximum value search
The time delay of sampled signal；
Step S312：Progress Fourier transformation obtains the first Fourier letter after above-mentioned first sampled signal is postponed above-mentioned time delay
Number, search for obtain the first Amplitude maxima and corresponding first frequency by Amplitude maxima, and by above-mentioned second sampled signal
It carries out Fourier transformation and obtains second Fourier's signal, search for obtain the second Amplitude maxima and corresponding by Amplitude maxima
Second frequency；And
Step S313：Judge whether above-mentioned first frequency is equal to above-mentioned second frequency, if unequal, above-mentioned audio is believed again
Number and above-mentioned audio demodulation signal carry out relevant treatment and relevant peaks maximum value search and execute subsequent step if equal.
12. frequency modulation broadcasting method of real-time as described in claim 11, which is characterized in that above-mentioned steps S32 is specifically wrapped
Include following steps：
Step S321：Value of the above-mentioned first Fourier signal at above-mentioned first frequency is the first complex values, in above-mentioned second Fu
Value of the leaf signal at above-mentioned second frequency is the second complex values, most according to above-mentioned first Amplitude maxima and above-mentioned second amplitude
The ratio estimation amplitude difference values being worth greatly, and according to the ratio of above-mentioned first complex values and above-mentioned second complex values and above-mentioned
First frequency estimates sampling frequency offset estimated value；
Step S322：To the above-mentioned amplitude difference values of above-mentioned first Fourier signal compensation and above-mentioned sampling frequency offset estimated value, obtain
First thermal compensation signal；
Step S323：Above-mentioned second Fourier signal subtracts above-mentioned first thermal compensation signal, obtains noise signal；And
Step S324：According to above-mentioned second Fourier signal and above-mentioned noise signal, above-mentioned transmitter performance index is calculated
Parameter.
13. frequency modulation broadcasting method of real-time as described in claim 11, which is characterized in that in above-mentioned steps S311,
The sample frequency sampled to above-mentioned audio signal and above-mentioned audio demodulation signal is at least 44.1KHZ, and sampling bit wide is at least
It is 16.
14. frequency modulation broadcasting method of real-time as described in claim 9, which is characterized in that above-mentioned in above-mentioned steps S1
Audio signal is tone signal, stereo signal or monophonic signal.
15. frequency modulation broadcasting method of real-time as described in claim 9, which is characterized in that above-mentioned in above-mentioned steps S3
Transmitter performance index parameter includes at least one of signal-to-noise ratio, the distortion factor and frequency response values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334065.3A CN108880718B (en) | 2017-05-12 | 2017-05-12 | Frequency modulation broadcast real-time monitoring system, receiver and frequency modulation broadcast real-time monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334065.3A CN108880718B (en) | 2017-05-12 | 2017-05-12 | Frequency modulation broadcast real-time monitoring system, receiver and frequency modulation broadcast real-time monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108880718A true CN108880718A (en) | 2018-11-23 |
| CN108880718B CN108880718B (en) | 2020-06-09 |
Family
ID=64319802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710334065.3A Active CN108880718B (en) | 2017-05-12 | 2017-05-12 | Frequency modulation broadcast real-time monitoring system, receiver and frequency modulation broadcast real-time monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880718B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1154580A1 (en) * | 2000-05-09 | 2001-11-14 | Alcatel | A method for controlling the transmitter part of a radio transceiver and a corresponding radio transceiver |
| CN1799033A (en) * | 2003-06-03 | 2006-07-05 | 安捷伦科技有限公司 | A network analyzing method and a network analyzing apparatus |
| CN1835530A (en) * | 2005-03-18 | 2006-09-20 | 阿尔卡特公司 | Communication interface and testing method therefore |
| CN101442368A (en) * | 2008-12-26 | 2009-05-27 | 北京航空航天大学 | Phase noise emulator for broadcast communication transmitter and significance testing method capable of resisting phase noise |
-
2017
- 2017-05-12 CN CN201710334065.3A patent/CN108880718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1154580A1 (en) * | 2000-05-09 | 2001-11-14 | Alcatel | A method for controlling the transmitter part of a radio transceiver and a corresponding radio transceiver |
| CN1799033A (en) * | 2003-06-03 | 2006-07-05 | 安捷伦科技有限公司 | A network analyzing method and a network analyzing apparatus |
| CN1835530A (en) * | 2005-03-18 | 2006-09-20 | 阿尔卡特公司 | Communication interface and testing method therefore |
| CN101442368A (en) * | 2008-12-26 | 2009-05-27 | 北京航空航天大学 | Phase noise emulator for broadcast communication transmitter and significance testing method capable of resisting phase noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108880718B (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102113249B (en) | Methods and apparatus for sensing presence of transmission signal in wireless channel | |
| CN104601259B (en) | Wireless communication receiver with i/q imbalance estimation and correction techniques | |
| CN102298685B (en) | Automotive electronic radio-frequency identification parameter detecting system based on virtual instrument | |
| CN109560825A (en) | Zero intermediate frequency reciver quadrature error bearing calibration | |
| CN106249114A (en) | Multifunctional belt electric detection means based on WIFI transmission and method | |
| CN107192984A (en) | High-precision indoor locating system | |
| CN110351766A (en) | The method for carrying out multiple cell blind examination and measurement processing for 5G NR | |
| CN109921863A (en) | Doppler VHF omnirange digitalization surveillance & control system and method | |
| CN104135326A (en) | Radio frequency test device and radio frequency test suitable for 8PSK (8 Phase Shift Key) signal of EDGE (Enhanced Data Rates for GSM Evolution) system | |
| CN105223542B (en) | A kind of monitoring and direction-finding method that direction-finding equipment is carried based on aircraft | |
| CN103869334A (en) | Automatic identification and processing method for GNSS (global navigation satellite system) space signal distortion | |
| CN102869091B (en) | Method and device for determining arrival time of location reference signals | |
| CN108880718A (en) | Frequency modulation broadcasting real-time monitoring system, receiver and frequency modulation broadcasting method of real-time | |
| CN108880719A (en) | Frequency modulation broadcasting method of real-time | |
| CN108880705A (en) | Frequency modulation broadcasting real-time monitoring system | |
| CN109412726A (en) | Receiver | |
| CN102170318B (en) | Spectral analysis algorithm used for receiver performance test | |
| CN203446031U (en) | System capable of detecting and positioning radio exam cheating digital message signal | |
| CN105848200B (en) | Upgoing energy measurement method and device in a kind of TD-SCDMA system | |
| CN113419152B (en) | Acoustic-electric composite based fault insulator online detection device and detection method | |
| CN102263981B (en) | Method and device for automatically detecting analog television PAL (Phase Alternating Line) system | |
| CN107241151A (en) | A kind of specific region radio signal detection device and method | |
| CN108037416A (en) | The method and device of circuit where a kind of definite ammeter | |
| CN207184496U (en) | A kind of specific region radio signal detection device | |
| CN106301464B (en) | A kind of signal-noise ratio estimation method for chirp signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |