CN102645928A - Test platform for baseband equipment of test control system - Google Patents
Test platform for baseband equipment of test control system Download PDFInfo
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Abstract
The invention provides a test platform for baseband equipment of a test control system, and aims at improving the detecting efficiency of the baseband equipment of the test control system before various kinds of test control tasks and reducing the diagnosis and isolation time of fault occurrence in the test control tasks. The test platform is realized through the following technical scheme that the test platform mainly comprises a frequency scale generating unit, a time code generating unit, a target simulating unit, a data simulating unit and a test plan management unit, wherein the frequency scale generating unit is used for generating frequency signals, the time code generating unit is used for generating time signals, the target simulating unit is used for generating tracking, remote control and data transmission intermediate frequency signals, the data simulating unit is used for generating tracking, remote control and data transmission data signals, and the test plan management unit is used for sending test commands and responding test results. The frequency scale generating unit and the time code generating unit respectively transmit frequency signals and time signals into the target simulating unit, and the target simulating unit and the data simulating unit carry out information exchange through a bus. Target data simulating application software and test plan management application software are respectively deployed on the data simulating unit and the test plan management unit to form a software platform, and the communication is carried out through networks.
Description
Technical field
The present invention relates to a kind of TT&C system that is applicable to that various aircraft observing and controlling place is used, the test plan management platform of especially baseband equipment being carried out integration test.
Background technology
In TT&C system; Baseband equipment is that collection modulation-demodulation technique, information coding technique, encryption technology, error correction coding, digital baseband transmission technology, multiplex technique, simultaneous techniques and network technology are the visual plant of one, is mainly used in and accomplishes the up modulation of remote signal; Find range, test the speed, telemetry intelligence (TELINT) receives and demodulation; Angle error is extracted; Functions such as image, speech and message data transmission.At present; China's aircraft observing and controlling cause is in flourish period; Various TT&C tasks constantly increase, the observing and controlling level improves constantly, the scientific research cycle obviously shortens; Baseband equipment is when having advantages such as index advanced person, complexity are high, technology-intensive, and Equipment Inspection efficient was low before the limitation that exists, power of test imperfection heavy owing to test job, equipment self-diagnosis ability caused new task to be used, defective such as difficult diagnosis after the device fails.Current, the baseband equipment structure of domestic TT&C system is generally integrated industrial computer, in circuit design, adopts software and radio technique, and adopts the BIT technology to carry out closed loop and detect and fault diagnosis.Yet the BIT The Application of Technology is limited by 10% software and hardware increment, can not accomplish the automatic detection and the fault diagnosis of baseband equipment all functions index.In various on-the-spot joint-trial tests; At present manual types that adopt more; Utilize import or homemade various analog machines to produce aircraft target simulation signals, all devices of assembling TT&C system is then formed the simulation test environment jointly baseband equipment is carried out simulation test.Because the influence of various factorss such as scheduling of resource, plan, this method test cycle is long, efficiency-cost ratio is low.In case the design defect of discovering device, the very difficulty that then undergoes technological transformation, the task of having a strong impact on whole TT&C system is accomplished.In baseband equipment development and system integration test, press for all that design is a kind of can to provide various dynamic target signals simulations that the integral test system of automatic test and management can be provided again, with realize to baseband equipment comprehensively, test fast.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming of existing TT&C system baseband equipment in method of testing; Provide a kind of general, convenient; Hardware and software interface are general, measurement is accurate; Do not rely on the operate outside environment of equipment, can provide various dynamic target signals simulations that the integral test system of automatic test and management can be provided again.To improve the detection efficiency of baseband equipment before various TT&C tasks and to be reduced in diagnosis and the isolation time that breaks down in the TT&C task.
Above-mentioned purpose of the present invention can reach through following measure.The present invention provides a kind of test platform that is used for the TT&C system baseband equipment; Comprise; By hardware platform and the common integrated industrial computer mode configuration of forming of software platform; It is characterized in that; Described hardware platform mainly comprises, the frequency marking generation unit of generation frequency signal, the time-code generation unit of generation time signal, generation tracking, remote control, the target simulation unit of counting crossing frequency signal, generation tracking, remote control, the digital simulation unit of counting the biography data-signal, transmission test command and response test result's test plan administrative unit, wherein; Frequency marking generation unit and time-code generation unit are sent frequency signal and time signal into the target simulation unit respectively, and target simulation unit and digital simulation unit carry out message exchange through bus; Target data simulation application software and test plan management application software are deployed in respectively on digital simulation unit and the test plan administrative unit forms software platform; Test plan management application software and target data simulation application software carry out communication through network; Interactive device parameter control command and response message, test command and test result information.
The beneficial effect that the present invention compares art methods is:
The present invention is through accomplish the various functional parameter tests of baseband equipment automatically; Shorten the baseband equipment test duration significantly, improve the test plan management platform of testing efficiency; Having changed the observing and controlling analog machine only has the present situation of aircraft echo signal analog functuion, and aircraft target operational data analog functuion is provided.Aircraft target simulation function is concentrated on target simulation unit and the digital simulation unit; Adopt the digital simulation application software to carry out the real-time testing result data information that simulation generation and network send, reception baseband equipment to be tested sends through network of real-time testing data information frame, calculate test result and analytical test index accordance, the feedback test result gives the test plan management application software.Simultaneously, target data simulation application software is also supported duty and the two-way transparent forwarding of running parameter between target simulation unit and the test plan administrative unit.
The present invention provides the automatic realization of the various functional test flow processs of TT&C system baseband equipment, passes on Gong and can test like distant control function test, telemetry function test, following function test, number.Wherein, the distant control function test event comprises that mainly issue an order delay testing, remote control time of remote control mistake instruction testing, remote control meets accuracy test etc.The telemetry function test event mainly comprises telemetry demodulation delay testing, error rate test etc.The following function test event mainly comprises AGC range of control and accuracy test, the test of AGC time constant, capture time test, distance accuracy test, rate accuracy test etc.Number is passed on Gong and can test event be comprised that mainly the test of reception capture time, the test of AGC control accuracy, the test of AGC time constant, carrier loop bandwidth test, the test of frequency dynamic scope, number pass error rate test, the packet delay test of number biography and number and pass packet jitter test etc.
The present invention combines test plan and management function and target simulation function, effectively reduces present employing independently the work complexity of target simulation device build test environment and manual testing's workload.
Test plan administrative unit of the present invention is the center of testing equipment planning management, and the test plan management application software of its deploy can provide good operation and control interface to support the operations such as inquiry, customization and deletion of test plan for the user; The test plan that can carry out on request under the various functional modes generates, handles; Automatically according to plan parameter being set realizes testing process, analyzes the confession test result, shows test mode, generation test report and printout test result form and corresponding results figure in real time.The test plan management application software also disposes the database that data such as test plan, test index, test parameter, test simulation data, test result are stored; And adopt document form data to store raw measurement data; For the test overall process provides detailed record, help carrying out of test analysis work.The test plan management application software also possesses Routine Management function such as user authority management, log record, systematic parameter configuration etc., and online help is provided.
The present invention carries out hardware and software nuclear interface standardizing, General design; Not only realize that through the hardware interface of employing standard the hardware interface between testing apparatus and the equipment to be tested is general; And adopt extend markup language (XML) to realize the transparent exchange and the general procedure of information between testing apparatus and the equipment to be tested, between the testing apparatus internal module, to realize towards the bright support of full impregnated of different TT&C system base band users' interactive information.The network information interface of realizing transparent information exchange between testing apparatus and the equipment to be tested has two types, and one type is the monitor message interface, and main mutual information has equipment status parameter, equipment work parameter, testing of equipment order etc.Another kind of is the data service information interface, and main mutual information has target following information, telemetry intelligence (TELINT), remote information, data transport service information etc.
Below in conjunction with accompanying drawing and embodiment this method is further specified.
Description of drawings
Fig. 1 is the composition frame chart that the present invention is used for the test platform of TT&C system baseband equipment.
Fig. 2 is the test platform software architecture block diagram that the present invention is used for the TT&C system baseband equipment.
Fig. 3 is the test platform software interface general procedure block diagram that the present invention is used for the TT&C system baseband equipment.
Fig. 4 is a remote control mistake instruction testing process flow diagram of the present invention.
Fig. 5 is the remote control of the present invention delay testing process flow diagram of issuing an order.
Fig. 6 meets the accuracy test process flow diagram at the remote control time of the present invention.
Fig. 7 is a telemetry demodulation delay testing process flow diagram of the present invention.
Fig. 8 is that number of the present invention passes packet delay and packet jitter test flow chart.
Fig. 9 is AGC range of control of the present invention and accuracy test process flow diagram.
Figure 10 is AGC time constant of the present invention and carrier loop bandwidth test process flow diagram.
Figure 11 is a frequency dynamic scope test flow chart of the present invention.
Figure 12 is a test plan management Timing Processing process flow diagram of the present invention.
Embodiment
Further specify the present invention through embodiment below.In following examples,
Consult Fig. 1.In following examples; The test platform that is used for the TT&C system baseband equipment; Comprise; By hardware platform and the common integrated industrial computer mode configuration of forming of software platform; Hardware platform mainly comprises, the frequency marking generation unit of generation frequency signal, the time-code generation unit of generation time signal, generation tracking, remote control, the target simulation unit of counting crossing frequency signal, generation tracking, remote control, the digital simulation unit of counting the biography data-signal, transmission test command and response test result's test plan administrative unit.Hardware platform is mainly used in to be realized the dynamic target signals high-precision analog and produces simulation test data and acceptance test return message as a result in real time.Target data simulation application software and test plan management application software are deployed in respectively on digital simulation unit and the test plan administrative unit forms software platform; Test plan management application software and target data simulation application software carry out communication through network; Interactive device parameter control command and response message, test command and test result information.
Frequency marking generation unit in the hardware platform is that test platform and tested baseband equipment provide unified frequency signal, and the frequency signal waveform is sinusoidal wave.Frequency marking generation unit and time-code generation unit are sent frequency signal and time signal into the target simulation unit respectively, and target simulation unit and digital simulation unit carry out message exchange through bus.The time-code generation unit is that test platform and tested baseband equipment provide the unified time signal; The target simulation unit receives, sends existing various space vehicle dynamic observing and controlling intermediate-freuqncy signals and transmits simulation, can simulate up unidirectional, descending unidirectional, uplink dual respectively to, descending two-way remote measurement, remote control, the number number of delivering a letter.The digital simulation unit produces simulation test data and acceptance test return message as a result in real time, like remote information frame, data transmission information frame etc.The test plan administrative unit is the center of test plan management, and the operations such as inquiry, customization and deletion of test plan can be provided to the user, according to plan parameter is set and realizes testing process automatically and Measurement results is provided.
Physical interface between test platform and the tested baseband equipment has intermediate-freuqncy signal interface and network communication interface.The intermediate-freuqncy signal interface is used to transmit by the target simulation intermediate-freuqncy signal of test platform generation and the test intermediate-freuqncy signal of baseband equipment to be tested transmission.Network interface has the communication interface between target data simulation application software and tested baseband equipment, main interactive simulation data signal under test and test result feedback data signal etc.; Communication interface between test plan management application software and tested baseband equipment, main interactive testing control command signal and response signal etc.Test platform externally provides network information interface to have two types, and one type is the monitor message interface, and main mutual information has equipment status parameter, equipment work parameter, testing of equipment order etc.Another kind of is the data service information interface, and main mutual information has target following information (like ranging data, frequency measurement data, angle measurement data etc.), telemetry intelligence (TELINT), remote information, data transport service information etc.
Consult Fig. 2.Software platform of the present invention is made up of target data simulation application software and test plan management application software.Simulation generation and network that target data simulation application software mainly carries out the real-time testing data information frame send, receive real-time testing result data information, calculating test result and the analytical test index accordance that baseband equipment to be tested sends through network, and the feedback test result gives the test plan management application software.This software also need be supported duty and the two-way transparent forwarding of running parameter between target simulation unit and the test plan administrative unit.The test plan management application software mainly provides good operation and control interface to the user, and the test plan that is undertaken under the various functional modes by customer requirements generates, handles and carries out, and shows test mode in real time, generates test report and printout test result.Test plan management application software configuration database is stored data such as test plan, test index, test parameter, test simulation data, test results, and adopts document form data storage raw measurement data.This application software also possesses Routine Management function such as user authority management, log record, systematic parameter configuration etc., and online help is provided.
Consult Fig. 3.The present invention realizes that the method in common of above-mentioned two kinds of network information Fabric Interfaces is: at first need carry out data analysis work to using platform information; Handle through extraction, conversion, analysis and modelling; Generate XML pattern (XML Schema) file and clearly describe in concrete data, data structure and pattern, data performance, the data in position, the data linking relationship and use relation, with the validity of constraint XML document and verifying XML document.Generate and the XML file that matees according to the XML schema file then.
The method of XML technical application network interface between observing and controlling base band ATE and tested baseband equipment is: the XML file 1 that comprises interface message that at first will generate is loaded in the monitor client application program as configuration; After test platform receives network UDF packet, carry out data parsing and follow-up processing according to XML file 1 configuration rule, can generate the XML file in order to information retrieval afterwards; When test platform when tested baseband equipment sends network data, the monitor client application program is carried out UDP message according to XML file 1 configuration rule and is sealed dress.
The method of XML technical application network interface between test platform close beta planning management unit and digital simulation unit is: the XML file 2 that comprises interface message that at first will generate is loaded into as configuration in test plan analogue unit application program and the digital simulation application program; The mode of transmission information is to adopt the XML file between both sides' application program, and both sides' application program carries out all need carrying out when network data receives and sends the conversion of data parsing and XML file.
The testing process design of the various functional modes of TT&C system baseband equipment is the basis of realizing the planning management of baseband equipment index automatic test.From the angle of test signal presentation mode, the treatment scheme that is used for the functional test project that the test platform of TT&C system baseband equipment provides can be divided into two types.The concrete realization as follows:
Consult Fig. 4～Fig. 6.The first kind produces the simulated data information frame by the digital simulation unit of the test platform that is used for the TT&C system baseband equipment; Send to tested baseband equipment through network; After tested baseband equipment reception, handling; Feed back to the digital simulation equipment of the test platform that is used for the TT&C system baseband equipment; Calculated, analyzed by the digital simulation testing equipment result of the test platform that is used for the TT&C system baseband equipment, test result is reported the test plan administrative unit, issuing an order like remote control mistake instruction testing, remote control, delay testing, remote control time meet accuracy test, number passes error rate test.Wherein, number passes the error rate test flow process and remote control mistake instruction rate testing process is similar, and it is different only to produce Frame information.The idiographic flow of each test event such as Fig. 4-shown in Figure 6:
Fig. 4 has described remote control mistake instruction testing flow process:
At first, running parameter, test parameter (comprising testing standard frame, test interval, test data number of frames etc.), the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, the digital simulation unit of test platform produces the remote information frame that has the frame number sign, and the digital simulation unit sends to tested baseband equipment through network with the remote information frame;
Tested baseband equipment receives the remote information frame and is modulated into intermediate-freuqncy signal output; The target simulation unit of test platform send the digital simulation unit through the IF interface receiving intermediate frequency signal, after demodulating the remote information frame with information; By the digital simulation unit with the information frame data that receive and testing standard frame data carry out byte-by-byte comparative statistics mistake frame number, whether the frame number of analyzing the Frame of double reception count the frame losing number continuously, calculate test result (comprising frame losing number, mistake frame number, testing total frame number, testing progress and frame losing data frame number information etc.); The digital simulation unit sends to the test and management unit with test result through network, and display result is also preserved the result into database.
The digital simulation unit judges according to test parameter whether testing process is accomplished, if do not accomplish, then repeats above-mentioned steps; If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Fig. 5 has described the remote control delay testing flow process of issuing an order:
At first; Through the test and management unit of test platform equipment work parameter, test parameter (comprising testing standard frame, test interval, test data number of frames etc.), the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously;
Then, the digital simulation unit of test platform produces the remote information frame of transmission types immediately, and the digital simulation unit sends to tested baseband equipment through network with the remote information frame, simultaneously this delivery time of digital simulation unit record T
1
Tested baseband equipment receives the remote information frame and is modulated into intermediate-freuqncy signal output, and tested baseband equipment is modulated T constantly through network with the remote information frame
2Report the digital simulation unit of test platform;
The digital simulation unit of test platform calculates the time delay △ T=T that issues an order
2-T
1, after the statistical computation of digital simulation unit test result (comprising maximum delay, minimal time delay, average delay, time delay fluctuation) being sent to the test and management unit through network, display result is also preserved the result into database.
The digital simulation unit judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b then)～d); If accomplish, whether need the printing test result by the test and management unit judges, if need then the test result form and the time delay wave pattern of the whole testing process of printout.
Fig. 6 has described the remote control time and has met the accuracy test flow process:
At first, running parameter, test parameter (comprising testing standard frame, test interval, test data number of frames etc.), the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, the digital simulation unit of test platform produces the remote information frame of transmission types immediately, and the digital simulation unit sends to tested baseband equipment through network with the remote information frame, simultaneously this delivery time of digital simulation unit record T
1
Tested baseband equipment receives the remote information frame and is modulated into intermediate-freuqncy signal output, and tested baseband equipment is modulated T constantly through network with the remote information frame
2Report the digital simulation unit of test platform;
The digital simulation unit of test platform meets precision ε T=∣ T computing time
2-T
1∣, the digital simulation unit sends to the test and management unit with test result through network, and display result is also preserved the result into database.
The digital simulation unit judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step then; If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Second type of target simulation unit by test platform produces intermediate-freuqncy signal and sends to tested baseband equipment; Tested baseband equipment receiving intermediate frequency signal; Demodulate data message; Detecting information is sent to the digital simulation unit or the test plan administrative unit of test platform through network; Carry out test result calculations, analysis by test platform, for example: number passes packet time delay and packet jitter test, counts the test of biography frequency dynamic scope, AGC range of control and accuracy test, the test of AGC time constant, carrier loop bandwidth test, the test of frequency dynamic scope.Wherein, Utilize tested baseband equipment BIT technology to test calculating, test result is reported test event to the test plan administrative unit of test platform through network has AGC range of control and accuracy test, the test of AGC time constant, carrier loop bandwidth test, the test of frequency dynamic scope.The idiographic flow of each test event is following:
Consult Fig. 7.Telemetry demodulation delay testing flow process is:
At first, running parameter, test parameter (comprising test interval, test data number of frames etc.), the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, the digital simulation unit of test platform produces number and passes information frame, and the digital simulation unit will be counted the biography information frame through bus and send to the target simulation unit, by the target simulation unit data-modulated become intermediate-freuqncy signal output;
The target simulation unit of tested baseband equipment demodulates and counts the breath of delivering a letter through the IF interface receiving intermediate frequency signal, with the synthetic T time of reception that has of data set
1Frame, through network this Frame is sent to the digital simulation unit of test platform then;
The digital simulation unit of test platform receives the Frame that network reports, and notes the moment T that network receives Frame
2The digital simulation unit calculates this data frame delay △ T=T
2-T
1
The digital simulation unit of test platform sends to the test and management unit with test result through network, by carrying out display result and the result is preserved into database in the test and management unit.
The digital simulation unit of test platform judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b then)～e); If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Consult Fig. 8.Number passes the packet receive time delay and the packet jitter testing process is:
At first, running parameter, test parameter (comprising test interval, test data number of frames etc.), the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, the digital simulation unit of test platform produces number and passes information frame, and the digital simulation unit will be counted the biography information frame through bus and send to the target simulation unit, by the target simulation unit data-modulated become intermediate-freuqncy signal output;
The target simulation unit of tested baseband equipment demodulates and counts the breath of delivering a letter through the IF interface receiving intermediate frequency signal, with the synthetic T time of reception that has of data set
1Frame, through network this Frame is sent to the digital simulation unit of test platform then;
The digital simulation unit of test platform receives the Frame that network reports, and notes the moment T that network receives Frame
2The digital simulation unit calculates this data frame delay △ T=T
2-T
1,, calculate packet jitter T=△ T by the mistiming of frame statistics network reception data
n-△ T
N-1
The digital simulation unit of test platform sends to the test and management unit with test result (comprising receive time delay, packet jitter) through network, by carrying out display result and the result is preserved into database in the test and management unit.
The digital simulation unit of test platform judges according to test parameter whether testing process is accomplished, if do not accomplish, then repeats above-mentioned steps; If accomplish, whether need the printing test result by the test and management unit judges, if need then the test result form and the packet jitter figure of the whole testing process of printout.
Consult Fig. 9.AGC range of control and accuracy test flow process are:
At first, running parameter, test parameter, the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, by the stepping pointwise device parameter is set by the test and management unit of test platform, sends to the digital simulation unit through network, the digital simulation unit produces corresponding intermediate-freuqncy signal through bus controlled target analogue unit and sends through IF interface;
Tested baseband equipment receiving intermediate frequency signal, the BIT of the receiver module of tested baseband equipment calculates the signal level behind the AGC, this signal level value is finally sent to the test and management unit of test platform through network; If after the locking of the receiver module of tested baseband equipment, tested baseband equipment produces locking information automatically and through network this information is sent to the test and management unit of test platform; If the receiver module non-locking of tested baseband equipment, tested baseband equipment produce non-locking information automatically and through network this information is sent to the test and management unit of test platform;
The test and management unit of test platform receives tested baseband equipment signal whether locking information and AGC signal level information (V) from network; Analyze; If the signal lock rule is calculated corresponding AGC level value (AGC) according to the AGC signal level information (V) that reports, maximal value (MAXAGC), the minimum value (MINAGC) of statistics AGC level value; Calculate AGC precision (PRECISIONAGC), judge the AGC range of control according to the semaphore lock state.
PRECISION
AGC?＝?MAX
AGC－MIN
AGC
The test and management unit of test platform carries out display result and the result is preserved into database.
The test and management unit of test platform judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b then)～e); If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Consult Figure 10.AGC time constant testing process is:
At first, running parameter, test parameter, the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, by the stepping pointwise device parameter is set by the test and management unit of test platform, sends to the digital simulation unit through network, the digital simulation unit produces corresponding intermediate-freuqncy signal through bus controlled target analogue unit and sends through IF interface;
Tested baseband equipment receiving intermediate frequency signal after the receiver module locking of tested baseband equipment, calculates the AGC time constant by its BIT, this signal level value is finally sent to the test and management unit of test platform through network;
The test and management unit of test platform carries out display result and the result is preserved into database.
The test and management unit of test platform judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b then)～d); If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Consult Figure 10.Carrier loop bandwidth test flow process is:
At first, running parameter, test parameter, the test index of test platform are set, set the running parameter of tested baseband equipment simultaneously through the test and management unit of test platform;
Then, by the stepping pointwise device parameter is set by the test and management unit of test platform, sends to the digital simulation unit through network, the digital simulation unit produces corresponding intermediate-freuqncy signal through bus controlled target analogue unit and sends through IF interface;
Tested baseband equipment receiving intermediate frequency signal after the tested baseband equipment receiver module locking, calculates the carrier loop bandwidth by its BIT, this signal level value is finally sent to the test and management unit of test platform through network;
The test and management unit of test platform carries out display result and the result is preserved into database.
The test and management unit of test platform judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b then)～d); If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
Consult Figure 11.Frequency dynamic scope testing process is:
At first, running parameter, test parameter, the test index of test platform are set, set the running parameter of tested observing and controlling baseband equipment simultaneously through the test and management unit of test platform;
Then, by the stepping pointwise device parameter is set by the test and management unit of test platform, sends to the digital simulation unit through network, the digital simulation unit produces corresponding intermediate-freuqncy signal through bus controlled target analogue unit and sends through IF interface;
Tested baseband equipment receiving intermediate frequency signal, if after the locking of the receiver module of tested baseband equipment, tested baseband equipment produces locking information automatically and through network this information is sent to the test and management unit of test platform; If the receiver module non-locking of tested baseband equipment, tested baseband equipment produce non-locking information automatically and through network this information is sent to the test and management unit of test platform;
The test and management unit of test platform receives whether locking information of tested baseband equipment signal from network, and the analytical information content is if locking then is regarded as in normal dynamic range.
The test and management unit of test platform carries out display result and the result is preserved into database.
The test and management unit of test platform judges according to test parameter whether testing process is accomplished, if accomplish, and repeating step b-e then); If accomplish, whether need the printing test result by the test and management unit judges, if need the then test result form of the whole testing process of printout.
The test plan management, information retrieval adopts relational database management system to realize with inquiry.Test plan is gone into library package and is drawn together test pattern, test event, test simulation parameter, test duration, test result etc.Test plan is formulated the operation interface that provides at the test plan management application software and is realized.
Consult Figure 11.After the test plan parameter was confirmed, application software was planned the conflict inspection, only will legal plan preserves that also the time sorts according to schedule automatically into database.The user can Query Database in implementation of the plan, cancel a plan or insert new plan, implementation strategy can also change one's plans through the priority that plan is set.The priority execution sequence of test plan is: high-level plan>general plan>rudimentary plan.When a plurality of plan priority are identical, should mate by the time.Test plan is carried out and is adopted regularly inquiry mechanism, the plan information in the application software polling data storehouse, and according to priority order is carried out flow processing, and shows test results in real time at test interface, preserves test result after the completion to be tested.Test plan has four types: in not carrying out, carrying out, end and invalid.To unenforced plan, at first need the validity of inspection plan time, expired if the time is assigned in plan, then such plan should be designated invalidly, disregards and explains the reason.When carrying out test plan, at first need to generate corresponding testing process, adopt each item information-driven test in the flow process to carry out set by step then according to test plan.In the execution of testing process, application software all has follow-up investigations to the implementation status of each step, if certain step is overtime can't be accomplished, then automatically performs next procedure; If time-out time does not arrive, the user can carry out emergency operation, revises the partial test parameter.
Above-mentioned frequency marking generation unit is realized the output of 10MHz frequency signal, and it can be made up of modules such as the 10MHz rubidium clock of high stability, constant-temperature crystal oscillator, channel amplifiers.The 10MHz frequency marking of rubidium clock output is delivered to channel amplifier, can tell the output of multichannel 10MHz frequency standard signal and use.Concrete realization can be adopted one plate card type rubidium clock (as: XCPCI-3319 of day electronics corporation difficult to understand).
The time-code generation unit can be made up of receiver module, time-code generation module and shunt module.Receiver module is made up of a cover GPS receiver and B sign indicating number; GPS receiver output time information and 1PPS signal second; The time-code generation module receives time signal and the 10MHz frequency signal that the GPS receiver is sent here, produces standard time sign indicating number, IRIG-B (DC) sign indicating number and pulse signal; Shunt module can be exported multichannel IRIG-B (DC) sign indicating number and pulse signal as requested.Concrete realization can be adopted the time-code card (as: XCPCI-002B of day electronics corporation difficult to understand) of a standard C pci bus interface.
The target simulation unit can be made up of transmitting-receiving processing module, signal imitation module.Reception, demodulation, storage forwarding and the Doppler of transmitting-receiving processing modules implement echo signal load.The transmitting-receiving processing module can adopt the integrated circuit board of a cpci bus standard; Its main built-up circuit is programmable digital device (FPGA), digital signal processor spare (DSP), A/D, BPF., amplifier, numerical-control attenuator, frequency synthesizer; Wherein adopt fpga chip to be used to realize demodulation function, the DSP chip is realized the storage forwarding capability.The signal imitation module realizes that remote information and telemetry intelligence (TELINT) produce.The signal imitation module can adopt the integrated circuit board of a cpci bus standard; Its main built-up circuit is programmable digital device (FPGA), digital signal processor spare (DSP), D/A, BPF., amplifier, numerical-control attenuator, frequency synthesizer; Adopt fpga chip to realize modulation function on it, can adopt dsp chip to realize data storage function.
The digital simulation unit can adopt a CPCI cpu motherboard to constitute, and also can adopt an embedded main board to constitute.Dispose hard disk, internal memory, network interface, USB interface, VGA interface, serial ports etc. on the mainboard, wherein need dispose the serial ports of 2 10/100/1000M self-adaptation network interfaces, 1 RS232 interface.The operating system of digital simulation unit can adopt the commercial embedded OS of main flow such as the Vxworks platform of WindRiver, the pSOS platform of CoreTek etc., adopts the C language development.
The test plan administrative unit can adopt a CPCI cpu motherboard to constitute, and disposes hard disk, internal memory, network interface, USB interface, VGA interface, PS/2 interface etc. on the integrated circuit board, wherein need dispose 3 10/100/1000M self-adaptation network interfaces at least.The operating system of test plan administrative unit can adopt the WindowsXP platform, and database can adopt SQL Server, Access, Visual FoxPro etc.Test plan administrative unit application software can adopt Visual Studio .Net exploitation, also can adopt the VC6.0 exploitation.
Claims (9)
1. test platform that is used for the TT&C system baseband equipment; Comprise; By hardware platform and the common integrated industrial computer mode configuration of forming of software platform; It is characterized in that; Described hardware platform mainly comprises, the frequency marking generation unit of generation frequency signal, the time-code generation unit of generation time signal, generation tracking, remote control, the target simulation unit of counting crossing frequency signal, generation tracking, remote control, the digital simulation unit of counting the biography data-signal, transmission test command and response test result's test plan administrative unit, wherein; Frequency marking generation unit and time-code generation unit are sent frequency signal and time signal into the target simulation unit respectively, and target simulation unit and digital simulation unit carry out message exchange through bus; Target data simulation application software and test plan management application software are deployed in respectively on digital simulation unit and the test plan administrative unit forms software platform; Test plan management application software and target data simulation application software carry out communication through network; Interactive device parameter control command and response message, test command and test result information.
2. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; The target simulation unit receives, sends various space vehicle dynamic observing and controlling intermediate-freuqncy signals and transmits simulation, simulates up unidirectional, descending unidirectional, uplink dual respectively to, descending two-way remote measurement, remote control, the number number of delivering a letter.
3. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; Described frequency marking generation unit is that the test platform and the tested baseband equipment that are used for the TT&C system baseband equipment provide unified frequency signal, and the frequency signal waveform is sinusoidal wave.
4. the test platform that is used for the TT&C system baseband equipment according to claim 1 is characterized in that, described time-code generation unit is that the test platform and the tested baseband equipment that are used for the TT&C system baseband equipment provide the unified time signal.
5. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that integration test observing and controlling baseband equipment externally provides main mutual information that the monitor message interface of equipment status parameter, equipment work parameter, testing of equipment command net information interface and mutual target following information is arranged.
6. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; The target simulation unit send the digital simulation unit through the IF interface receiving intermediate frequency signal, after demodulating the remote information frame with information; By the digital simulation unit with the information frame data that receive and testing standard frame data carry out byte-by-byte comparative statistics mistake frame number, whether the frame number of analyzing the Frame of double reception count the frame losing number continuously, calculate test result; The digital simulation unit sends to the test and management unit with test result through network, and display result is also preserved the result into database.
7. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; Described test plan administrative unit provides customization, inquiry, the deletion action of test plan; According to plan parameter is set and realizes testing process automatically and Measurement results is provided, and continue the center of test plan management.
8. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; Simulation generation and network that described target data simulation application software carries out the real-time testing data information frame send, receive real-time testing result data information, calculating test result and the analytical test index accordance that baseband equipment to be tested sends through network, and the feedback test result gives the test plan management application software.
9. the test platform that is used for the TT&C system baseband equipment according to claim 1; It is characterized in that; The digital simulation unit produces number and passes information frame; The digital simulation unit will be counted the biography information frame through bus and send to the target simulation unit, by the target simulation unit data-modulated become intermediate-freuqncy signal output.
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