CN102223566A - Testing method and system for network coverage of ground broadcast network of digital television - Google Patents
Testing method and system for network coverage of ground broadcast network of digital television Download PDFInfo
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Abstract
The invention brings forward a testing method for network coverage of a ground broadcast network of a digital television. The testing method comprises the following steps that: a testing receiving plate of a ground broadcast network of a digital television receives a ground broadcast network signal of the digital television and sends receiving analytical data to a data processing module according to the round broadcast network signal of the digital television; according to the receiving analytical data, the data processing module determines field intensity and receiving performance corresponding to a specific position by combining a field intensity signal as well as latitude and longitude information; and field intensity of the current time and real-time statistical information of an error code are displayed according to the field intensity and the receiving performance corresponding to the specific position. According to a technical scheme provided in the invention, the variation of different interfaces can be shielded by means of software; testing data, time and geographic information are combined by utilizing a GIS assembly, so that a test process can be displayed vividly and visually; meanwhile, a network coverage test of a ground broadcast network of a digital television can also be effectively realized.
Description
Technical field
The present invention relates to digital information transmission technical field, particularly Digital Television Terrestrial Broadcasting network of network coverage test method and system.
Background technology
Nineteen nineties, the digitized agitation of radio and television begins to have swept the globe.Studio record and broadcast digitlization, satellite transmits digitlization, CATV transmission digitlization and digitization of terrestrial television broadcasts are pushed forward comprehensively.At the ground digital television broadcast transmission field, nineteen ninety-five, 1997 and 1999, the U.S., Europe and Japan have issued three kinds of different ground digital television broadcast transmission technical standards respectively, are respectively: ATSC, DVB-T and ISDB-T.After the standard promulgation, this country/regional Digital Television has all been accelerated in countries in the world/area, the paces of terrestrial DTV development particularly, each state/area selects different terrestrial DTV transmission standards to actively promote the development of this country/regional terrestrial DTV industry respectively according to the actual conditions in this country/area.In addition, national governments have all given certain policy inclination and guiding according to self-technique and market situation at aspects such as legal assurance, financial support, content of TV program.After the promotion and application of experience several years, the terrestrial DTV market of present many country /region is with considerable scale.
Present stage, the ground TV broadcast system was the important component part of radio and television system in China, and it is with digital video broadcast-satellite system and cable digital TV broadcast system and other auxiliary system is collaborative mutually provides nationwide audient to cover.And in above-mentioned three kinds of different broadcasting coverage modes, ground TV broadcast is the most important components in the comprehensive nerve of a covering of China's radio and television, and China still has 2/3rds TV user to rely on the terrestrial wireless mode to carry out television broadcasting signal to receive at present.In addition, relative cable TV and satellite television, under situations such as natural calamity, war, as emergency system, ground TV broadcast, especially ground system of digital television broadcast has more advantage.
On August 30th, 2006, Standardization Administration of China has issued that China has the terrestrial DTV transmission national standard of independent intellectual property right: " digital television ground broadcast transmission system frame structure, chnnel coding and modulation " standard, standard No. is GB20600-2006.This standard is a state compulsory standard, and approved date is on August 18th, 2006, and this standard was formally implemented on August 1st, 2007.The formal promulgation of terrestrial DTV transmission national standard be China's terrestrial DTV enforcement, popularize and established solid foundation.
On January 1st, 2008, on the basis of Beijing area terrestrial DTV engineering test, State Administration of Radio Film and Television's official approval is adopted terrestrial DTV transmission national standard to carry out the test professional and the SD business of ground digital television broadcast high definition and is broadcasted in the Beijing area, on May 1st, 2008 formally broadcasted, thereby had drawn back the prelude that China's terrestrial DTV transmission national standard is used.After this, under the unified plan of SARFT(The State Administration of Radio and Television), by in August, 2008, comprise that ground such as 6 Olympic Games cities in Beijing, Shanghai, Tianjin, Qingdao, Qinhuangdao, Shenyang and Guangzhou, Shenzhen adopt terrestrial DTV transmission national standard started broadcasting terrestrial DTV high definition business and SD business successively.
Terrestrial DTV transmission standard GB 20600-2006 " digital television ground broadcast transmission system frame structure, chnnel coding and modulation " is China's research and development emerging standards that formulate, that have independent intellectual property right.After the standard promulgation, external traditional terrestrial DTV test, measuring equipment and instrument production, manufacturing enterprise just takes up research, exploitation meets the test of China's terrestrial DTV transmission standard, measuring equipment and instrument, and the test of domestic radio and television, measuring equipment and instrument production, manufacturing enterprise lacks research always, the research and development experience of the relevant device of exploitation terrestrial DTV transmission standard, so far, the domestic market still lacks the maturation test that meets China's terrestrial DTV transmission national standard, measuring equipment and instrument, this will hinder the process of China's terrestrial DTV industrialization.
In application, enforcement and the universal process of ground digital television broadcast transmission standard, will be referred to the use of large number of ground digital television broadcasting making, playing device, all need to carry out performance and network and detect and authentication and be used for various device that terrestrial DTV broadcasts.Yet the shortage that meets the test of terrestrial DTV transmission national standard, measuring equipment will hinder the further popularization of ground digital television broadcast transmission national standard.
In addition, in the process of construction of ground digital television broadcast network, comprehensive coverage effect for comprehensive assessment ground digital television broadcast network, further carry out the ground digital television broadcast network, the particularly optimization of single frequency network, and the ground digital TV broadcasting network is carried out correlation technique check and accept, engineers and technicians need be by being specifically designed to the ground digital television broadcast network coverage and performance test apparatus or instrument means of testing and the testing tool as necessity.
In sum, be necessary to research and develop a series of multifunctional ground Digital Television comprehensive testers that meet terrestrial DTV transmission national standard, help relevant enterprise to carry out the research and development and the production of terrestrial digital television system Related product, and carry out the ground digital television broadcast network design for radio and television operator and correlation engineering technical staff, build and carry out network operation necessary means of testing is provided, thereby further standard terrestrial digital television system production market, promote the sound development of terrestrial DTV industry, promote the sustainable development of terrestrial DTV.Therefore, be necessary to propose a kind of scheme of effective Digital Television Terrestrial Broadcasting network coverage test, realize Digital Television Terrestrial Broadcasting network of network coverage test work.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly solves the problem of Digital Television Terrestrial Broadcasting network of network coverage test.The technical scheme that the present invention proposes combines test data, time, geography information, shows intuitively that vividly test process, tester no longer need to come into contacts with uninteresting data, just can know test result by map.
For achieving the above object, the present invention proposes a kind of Digital Television Terrestrial Broadcasting network of network coverage test method, comprising:
Digital Television Terrestrial Broadcasting network test dash receiver receiving digital television terrestrial broadcast networks signal, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to data processing module;
Described data processing module in conjunction with field intensity signal and latitude and longitude information, is determined the field intensity and the receptivity of ad-hoc location correspondence according to described receiving and analyzing data;
According to the field intensity and the receptivity of described ad-hoc location correspondence, show the field intensity of current time and the real-time statistics information of error code.
The embodiment of the invention has also proposed a kind of Digital Television Terrestrial Broadcasting network of network coverage test system on the other hand, comprises Digital Television Terrestrial Broadcasting network test dash receiver, frequency spectrograph, and GPS receiver and data processing equipment,
Described Digital Television Terrestrial Broadcasting network test dash receiver, be used for receiving digital television terrestrial broadcast networks signal, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to described data processing equipment;
Described frequency spectrograph is used for exporting corresponding field intensity signal according to described Digital Television Terrestrial Broadcasting network signal;
Described GPS receiver is used to export the latitude and longitude information of current location
Described data processing equipment, be used for according to described receiving and analyzing data, in conjunction with field intensity signal and latitude and longitude information, determine the field intensity and the receptivity of ad-hoc location correspondence, and, show the field intensity of current time and the real-time statistics information of error code according to the field intensity and the receptivity of described ad-hoc location correspondence.
The such scheme that the present invention proposes has solved the problem of the coverage test in the Digital Television Terrestrial Broadcasting network implementation internet.The technical scheme that proposes according to the present invention has shielded the otherness of distinct interface by software approach, uses peripheral hardware just as using common digital product convenient for the tester.Test macro has used the GIS assembly, and test data, time, geography information are combined, and shows intuitively that vividly test process, tester no longer need to come into contacts with uninteresting data, just can know test result by map.Test macro not only can carry out field intensity simply and easily, parameter measurements such as error code, and, can realize the covering performance test of Digital Television Terrestrial Broadcasting network signal effectively by all right playback of database and statistical test data.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is an embodiment of the invention Digital Television Terrestrial Broadcasting network of network coverage test method flow chart;
Fig. 2 is the model structure schematic diagram of MapX assembly;
Fig. 3 is an embodiment of the invention Digital Television Terrestrial Broadcasting network of network coverage test system configuration schematic diagram.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
In order to realize the present invention's purpose, the invention discloses a kind of Digital Television Terrestrial Broadcasting network of network coverage test method, may further comprise the steps:
Digital Television Terrestrial Broadcasting network test dash receiver receiving digital television terrestrial broadcast networks signal, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to data processing module; Described data processing module in conjunction with field intensity signal and latitude and longitude information, is determined the field intensity and the receptivity of ad-hoc location correspondence according to described receiving and analyzing data; According to the field intensity and the receptivity of described ad-hoc location correspondence, show the field intensity of current time and the real-time statistics information of error code.
As shown in Figure 1, be embodiment of the invention Digital Television Terrestrial Broadcasting network of network coverage test method flow chart, may further comprise the steps:
S101: the acceptance test signal, and the receiving and analyzing data are sent to data processing module.
In step S101, Digital Television Terrestrial Broadcasting network test dash receiver receiving digital television terrestrial broadcast networks signal, Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to data processing module.
Particularly, as embodiments of the invention, Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data by the general-purpose serial bus USB interface to data processing module.
High speed and high accuracy become the main flow of present data acquisition, also are a kind of trend of Future Development.Traditional data-interface generally adopts pci bus or RS-232 universal serial bus.Pci bus has higher transmission rate, can reach 132Mbit/s, also can plug and play, but their expansion slot is limited and the plug inconvenient; The RS-232 universal serial bus connects more convenient, but transmission rate is too slow, is not easy for high-speed transferring data and transmits mass data.USB (Universal Serial Bus, USB) support is up to the data transmission rate of 480Mbit/s, and have plug and play and hot swap characteristics and a dispense with outer connecting power easily, this has just concentrated the advantage of PCI and RS-232 universal serial bus, therefore, it is fit closely the USB interface technology being applied to data acquisition.
As embodiments of the invention, the receiving and analyzing data comprise the error rate and/or the video information of received signal.Particularly, can obtain the parameter of some reflection channel situation by the signal demodulating process of test dash receiver, as the Packet Error Ratio of coded data packet, bit error rate etc.If what receive is the PN sequence, can calculate error rate BER with the PN sequence contrast that this locality generates; If what receive is video information, can carry out video playback by the demultiplexing and the decoder of this machine.Test macro utilizes frequency spectrograph to measure level value, is not having under the situation of frequency spectrograph, and test macro also can be estimated incoming level, and the recording level value.
S102: data processing module in conjunction with field intensity signal and latitude and longitude information, is determined the field intensity and the receptivity of ad-hoc location correspondence according to the receiving and analyzing data.
In step S102, data processing module in conjunction with field intensity signal and latitude and longitude information, is determined the field intensity and the receptivity of ad-hoc location correspondence according to described receiving and analyzing data.
Particularly, field intensity signal produces for by frequency spectrograph described Digital Television Terrestrial Broadcasting network signal being analyzed the back, field intensity signal is by GPIB (General Purpose Interface Bus, general-purpose interface bus)/VISA (Virtual Instrument Software Architecture, virtual instrument software structure) interface imports described data processing module.
Gpib interface is the interface of at present the most frequently used intelligent instrument, this socket system is proposed by U.S. Hewlett-Packard Corporation at first, the back is also referred to as IEEE-488 interface or IEC-625 interface by the standard interface that U.S. electric and the IEEE of Electronic Engineering Association and the IEC of International Electrotechnical Commission are accepted as programmable instrument and automatic measuring and controlling system.Use gpib interface, the instrument of the various models that different manufacturers can be produced couples together easily with a passive STD bus, forms various Auto-Test Systems.
VISA is a senior API API who is used for carrying out with various instrument bus communication, is I/O interface software standard and the related specifications general name thereof that alliance of VPP system formulates.The VISA built-in function is a cover function that can conveniently call, core function may command all kinds device wherein, and need not consider the interface type of device.
Test macro uses the collection peripheral hardware of Agilent N9340A hand-hold type RF spectrum analysis instrument as the field intensity data, because frequency spectrograph is a USB interface, does not provide gpib interface, so need operate by the VISA built-in function.Test macro adopts the NI-VISA storehouse of NI company, to control information, as frequency is set, bandwidth, and the field intensity value is promptly read in reference levels etc. and data output, encapsulates.
Particularly, latitude and longitude information is imported described data processing module for obtain the back by the GPS receiver, and shows the field intensity of current time and the real-time statistics information of error code by GIS-Geographic Information System GIS.
Particularly, the model of the OEM of gps receiver original equipment manufacturer plate is a lot of, and performance is different, but the NMEA-0183 communication standard form that their GPS locating information serial output format adopts American National ocean Institution of Electronics to formulate mostly.What its dateout adopted is ASCII character, content comprised latitude, longitude, highly, information such as speed, date, time, course and satellite situation, common expressions has 6 kinds, comprises GGA, GLL, GSA, GSV, RMC and VTG.And if satellite communication is normal, can receive following data: $GPRMC,＜1 〉,＜2 〉,＜3〉and,＜4 〉,＜5〉and,＜6 〉,＜7〉and,＜8 〉,＜9〉and,＜10 〉,＜11〉and,＜12 〉
*Hh＜CR〉＜LF 〉, its specifying information is as shown in table 1.
Table 1 gps data format description
| Data bit | Data content |
| $GPRMC | The short data of representing that GPS recommends |
| <1> | The UTC time, the hhmmss form |
| <2> | Positioning states, A represent that effectively V represents invalid |
| <3> | Latitude, the ddmm.mmmm form |
| <4> | Latitude hemisphere, N represents the Northern Hemisphere, S represents the Southern Hemisphere |
| <5> | Longitude, the dddmm.mmmm form |
| <6> | Longitude hemisphere, E represents east longitude, W represents west longitude |
| <7> | Ground speed, 000.0～999.9 joint |
| <8> | The course, ground, 000.0～359.9 degree |
| <9> | The UTC date, the ddmmyy form |
| <10> | Magnetic declination, 000.0～180.0 degree |
| <11> | The magnetic declination direction, E represents east, W represents the west |
| <12> | The pattern indication |
| *hh | Verification and, promptly receive character string verification and |
| <CR><LF> | Full stop |
A complete NEMA-0183 statement is from initial symbol “ $GPRMC " one section character string till the full stop "＜CR〉＜LF〉".The information that needs to be grasped is the time of longitude and latitude, longitude and latitude direction, GPS positioning states and received signal.So when receiving so complete NEMA-0183 statement, the method of extracting useful information is: the position of judging initial symbol $GPRMC earlier, begin to read in data from initial symbol, in statement, seek again character "; ", intercept the data that character (string) acquisition between former and later two ", " is concerned about then, and with the carriage return character be the full stop of a GPS statement, obtain complete gps signal data.
As embodiments of the invention, the gps signal data send to data processing module by serial ports.Serial ports is a most frequently used data transmission channel between computer and the external series equipment.When data from CPU through serial ports when sending, byte data is converted to the position of serial; When receiving data, the position of serial is converted into byte data.Serial communication has in the industrial automation field very to be used widely, in some industrial control systems, requires system to have real-time computing usually, the needs that serial ports can satisfy efficient Interrupt Process, multitask and communicate by letter.
Though the GPS receiver on the market has various interface to be connected to the PC end now, portion communicates by serial ports and computer within it.The serial communication flow process is: opens serial ports, the serial communication parameter is set, comprise communication terminal slogan and communication format, and the read/write serial ports, incident and fault processing are closed serial ports.In test macro, the GPS receiver of employing is the satellite positioning receiver of USB interface or blue tooth interface, as long as use corresponding driving that the interface data that GPS sends is converted to serial data, just can operate satellite positioning receiver.
S103: show the field intensity of current time and the real-time statistics information of error code.
In step S103,, show the field intensity of current time and the real-time statistics information of error code according to the field intensity and the receptivity of ad-hoc location correspondence
The field intensity of ad-hoc location correspondence and receptivity, need use GIS-Geographic Information System GIS is to gather, store, manage, describe, to analyze the information system of earth surface and the space data relevant with geographical distribution.Assembly type GIS exploitation is comparatively popular at present, GIS development mode efficiently and fast, and it had both continued to use the powerful drawing function of professional GIS product, can realize various management functions as required flexibly again.Its construction cycle is short, and cost is low, can break away from large scale business GIS software platform independent operating, and not high to developer's GIS specialty context request.
The GIS design that is based on MapX that test macro adopts.MapX is the ActiveX control product with map analysis function formidably that MapInfo company provides to the user.MapX when creating layer, will set up a table for it by figure layer tissue map, with the geography information of not only having stored object in the figure layer in the corresponding table of figure layer, has also stored other attribute information that is associated with object.Usually the figure layer that uses in MapX all is the polar plot layer, can carry out unlimited convergent-divergent and the geography information of not losing this figure layer.
The MapX control adopts OO method to handle GIS-Geographic Information System, and the operation of geodata is actually operation to types of objects.The basic composition unit of MapX is single object Object and set Collection, and mutual mutually by content Constants and incident Events.Fig. 2 shows the model structure schematic diagram of MapX assembly.Map is the top layer attribute of MapX, and each Map object mainly comprises Datasets, Layers, three object sets of Annotations.Layer is used to operate the figure layer of map, and all geography information all are stored in the figure layer; Annotation is used for increasing text or symbol on map, and Annotation is positioned at the top of all other figure layers and is not connected with any data; Dataset is used to realize the binding of map and data, and the data source of binding can be DAO, ADO, odbc data source, RDO, MapInfo Table file, can also be a text of stipulating form.Comprise retrieval, inquiry and attributive character under the Layer object; Comprise spatial data, data area and data theme under the Dataset object; Comprise graphical annotations under the Annotation object.
In addition, GE (Google Earth, Google Earth) is a virtual earth software by Google's exploitation, it GIS information placement such as satellite image, aerial photograph, three-dimensional ground models on the threedimensional model of One Earth One Family, browsing use for people, is popular at present popular GIS-Geographic Information System.Test macro can become the data conversion of lane database the file of specific format, the file of GE by generating, just can be with level, the sign of field intensity is presented on the satellite image, so just can observe out the concrete environment of some test point easily, high building for example, viaduct etc. form the place in shadow region easily, this be non-satellite mapping can not provide.
In addition, the such scheme of the present invention's proposition can also have the function of preserving with playback to test data.As embodiments of the invention, test macro uses the Access database to preserve data, and manages and operating database by the OLEDB technology.Data processing module is stored the field intensity of described current time and the real-time statistics information of error code, the field intensity that data processing module can the playback different time and the real-time statistics information of error code.
The said method that the present invention proposes has solved the problem of the coverage test in the Digital Television Terrestrial Broadcasting network implementation internet.The said method that proposes according to the present invention has shielded the otherness of distinct interface by software approach, uses peripheral hardware just as using common digital product convenient for the tester.Said method has used the GIS assembly, and test data, time, geography information are combined, and shows intuitively that vividly test process, tester no longer need to come into contacts with uninteresting data, just can know test result by map.Said method not only can carry out field intensity simply and easily, parameter measurements such as error code, and, can realize the covering performance test of Digital Television Terrestrial Broadcasting network signal effectively by all right playback of database and statistical test data.
As shown in Figure 3, the embodiment of the invention has also proposed a kind of Digital Television Terrestrial Broadcasting network of network coverage test system, comprises Digital Television Terrestrial Broadcasting network test dash receiver 100, frequency spectrograph 200, GPS receiver 300 and data processing equipment 400.
Wherein, Digital Television Terrestrial Broadcasting network test dash receiver 100 is used for receiving digital television terrestrial broadcast networks signal, and Digital Television Terrestrial Broadcasting network test dash receiver 100 sends the receiving and analyzing data according to the Digital Television Terrestrial Broadcasting network signal to data processing equipment 400.
Wherein, the receiving and analyzing data comprise the error rate and/or the video information of received signal.Particularly, can obtain the parameter of some reflection channel situation by the signal demodulating process of test dash receiver, as the Packet Error Ratio of coded data packet, bit error rate etc.If what receive is the PN sequence, can calculate error rate BER with the PN sequence contrast that this locality generates; If what receive is video information, can carry out video playback by the demultiplexing and the decoder of this machine.Test macro utilizes frequency spectrograph to measure level value, is not having under the situation of frequency spectrograph, and test macro also can be estimated incoming level, and the recording level value.
Particularly, Digital Television Terrestrial Broadcasting network test dash receiver 100 sends receiving and analyzing data by the general-purpose serial bus USB interface to data processing equipment 400 through the usb communication module.
Frequency spectrograph 200 is used for exporting corresponding field intensity signal according to the Digital Television Terrestrial Broadcasting network signal.
Wherein, field intensity signal produces for analyze the back by 200 pairs of Digital Television Terrestrial Broadcasting network signals of frequency spectrograph, and passes through GPIB/VISA interface input data processing equipment 400 through the GPIB/VISA communication module.
GPS receiver 300 is used to export the latitude and longitude information of current location.
Wherein, latitude and longitude information is imported data processing equipment 400 for obtain the back by GPS receiver 300 by serial communication modular, and through the GIS module
Show the field intensity of current time and the real-time statistics information of error code by GIS-Geographic Information System GIS through error code display module and field intensity display module, wherein, real-time statistics information obtains by the real-time statistics module under the data analysis module in the data processing equipment 400.
Data processing equipment 400 is used for according to the receiving and analyzing data, in conjunction with field intensity signal and latitude and longitude information, determine the field intensity and the receptivity of ad-hoc location correspondence, and, show the field intensity of current time and the real-time statistics information of error code according to the field intensity and the receptivity of ad-hoc location correspondence.
Particularly, data processing equipment 400 also comprises data memory module, is used to store the field intensity of current time and the real-time statistics information of error code, the field intensity that data processing equipment 400 can the playback different time and the real-time statistics information of error code.
Embodiment as said system, data processing equipment 400 is by the Access database stores information, realize the field intensity of playback different time and the real-time statistics information of error code by OLEDB (Object Linking and Embedding Database, object-oriented and embedded database) technical management and operating database.
Use this test macro to carry out the coverage test of Digital Television Terrestrial Broadcasting network wireless, only need a reception antenna is placed the testing vehicle roof, power divider by one-to-two is supplied with test dash receiver and portable frequency spectrum instrument, can not estimate field intensity if there is frequency spectrograph with the test dash receiver yet, the GPS receiver itself carries antenna, and whole test system can be by vehicle-mounted inverter power supply.
Test macro shows great convenience in actual test process, finished a large amount of Digital Television Terrestrial Broadcasting network coverage test jobs smoothly.From these test results, can obtain the receiving feature of Digital Television Terrestrial Broadcasting network, thereby provide guidance the design of whole transmission system.
The said system that the present invention proposes has solved the problem of the coverage test in the Digital Television Terrestrial Broadcasting network implementation internet.The said system that proposes according to the present invention has shielded the otherness of distinct interface by software approach, uses peripheral hardware just as using common digital product convenient for the tester.Said method has used the GIS assembly, and test data, time, geography information are combined, and shows intuitively that vividly test process, tester no longer need to come into contacts with uninteresting data, just can know test result by map.Said system not only can be carried out field intensity simply and easily, parameter measurements such as error code, and, can realize the covering performance test of Digital Television Terrestrial Broadcasting network signal effectively by all right playback of database and statistical test data.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a Digital Television Terrestrial Broadcasting network of network coverage test method is characterized in that, comprising:
Digital Television Terrestrial Broadcasting network test dash receiver receiving digital television terrestrial broadcast networks signal, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to data processing module;
Described data processing module in conjunction with field intensity signal and latitude and longitude information, is determined the field intensity and the receptivity of ad-hoc location correspondence according to described receiving and analyzing data;
According to the field intensity and the receptivity of described ad-hoc location correspondence, show the field intensity of current time and the real-time statistics information of error code.
2. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 1 is characterized in that, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data by the general-purpose serial bus USB interface to data processing module.
3. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 2, it is characterized in that, described field intensity signal produces for by frequency spectrograph described Digital Television Terrestrial Broadcasting network signal being analyzed the back, and described field intensity signal is imported described data processing module by the GPIB/VISA interface.
4. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 3, it is characterized in that, described latitude and longitude information is imported described data processing module for obtain the back by the GPS receiver, and shows the field intensity of current time and the real-time statistics information of error code by GIS-Geographic Information System GIS.
5. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 1 is characterized in that described receiving and analyzing data comprise the error rate and/or the video information of received signal.
6. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 1, it is characterized in that, described data processing module is stored the field intensity of described current time and the real-time statistics information of error code, the field intensity that described data processing module can the playback different time and the real-time statistics information of error code.
7. Digital Television Terrestrial Broadcasting network of network coverage test method as claimed in claim 6, it is characterized in that, described data processing module is realized the field intensity of playback different time and the real-time statistics information of error code by the Access database stores information by OLEDB technical management and operating database.
8. a Digital Television Terrestrial Broadcasting network of network coverage test system is characterized in that, comprises Digital Television Terrestrial Broadcasting network test dash receiver, frequency spectrograph, and GPS receiver and data processing equipment,
Described Digital Television Terrestrial Broadcasting network test dash receiver, be used for receiving digital television terrestrial broadcast networks signal, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data according to described Digital Television Terrestrial Broadcasting network signal to described data processing equipment;
Described frequency spectrograph is used for exporting corresponding field intensity signal according to described Digital Television Terrestrial Broadcasting network signal;
Described GPS receiver is used to export the latitude and longitude information of current location
Described data processing equipment, be used for according to described receiving and analyzing data, in conjunction with field intensity signal and latitude and longitude information, determine the field intensity and the receptivity of ad-hoc location correspondence, and, show the field intensity of current time and the real-time statistics information of error code according to the field intensity and the receptivity of described ad-hoc location correspondence.
9. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 8 system is characterized in that, described Digital Television Terrestrial Broadcasting network test dash receiver sends the receiving and analyzing data by the general-purpose serial bus USB interface to data processing equipment.
10. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 9 system, it is characterized in that, described field intensity signal produces for by frequency spectrograph described Digital Television Terrestrial Broadcasting network signal being analyzed the back, and imports described data processing equipment by the GPIB/VISA interface.
11. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 10 system, it is characterized in that, described latitude and longitude information is imported described data processing equipment for obtain the back by described GPS receiver, and shows the field intensity of current time and the real-time statistics information of error code by GIS-Geographic Information System GIS.
12. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 8 system is characterized in that described receiving and analyzing data comprise the error rate and/or the video information of received signal.
13. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 8 system, it is characterized in that, described data processing equipment is stored the field intensity of described current time and the real-time statistics information of error code, the field intensity that described data processing equipment can the playback different time and the real-time statistics information of error code.
14. Digital Television Terrestrial Broadcasting network of network coverage test as claimed in claim 13 system, it is characterized in that, described data processing equipment is realized the field intensity of playback different time and the real-time statistics information of error code by the Access database stores information by OLEDB technical management and operating database.
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