CN105306156A - Remote sensing satellite data transmission product automatic testing system and method - Google Patents
Remote sensing satellite data transmission product automatic testing system and method Download PDFInfo
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Abstract
The invention provides a remote sensing satellite data transmission product automatic testing system and method. The remote sensing satellite data transmission product automatic testing system comprises a PXI system controller which provides a real-time operating system for a whole PXI platform; a PXI module set which is connected with a PXI bus and provides a direct interface for a tested product; a PXI case which provides a stable mechanically structured platform and a reliable power supply and heat radiation system for the PXI system; and a piece of testing system software which cooperates with the PXI module set to realize corresponding functions and provides an interacting interface for a user. Based on universal PXI architecture design, the remote sensing satellite data transmission product automatic testing system overcomes the disadvantages of huge device scale, high construction difficulty and long period of an existing remote sensing satellite data transmission ground testing system.
Description
Technical field
The present invention relates to satellite data transmission product test technical field, particularly, relate to remote sensing satellite number and pass product automation test macro.
Background technology
Remote sensing satellite data transmission subsystem product is generally made up of data prediction equipment, base band data treatment facility and apparatus for radio frequency processing, complete the works for the treatment of such as load data reception, preliminary treatment, access, format, coding, modulation, the transmission channel over the ground of satellite load data is provided.
First satellite data transmission ground testing system has needed the inverse process of on-board processing, the radiofrequency signal received is reverted to the reset condition of load data, and completes the signal quality estimation of data transmission procedure.In addition when carrying out subsystem product and testing separately, satellite data transmission ground testing system also needs the analog interface providing other system on star, provides the services such as data broadcast, instruction transmission, telemetry-acquisition to data transmission subsystem product.
Remote sensing satellite number passes ground testing system and is usually made up of radio frequency testing subsystem, Baseband Testing subsystem and digital simulation subsystem, the conventional satellite number of complete set passes ground testing system equipment sum often beyond 30, is far longer than the quantity of product on star.It is huge that tradition remote sensing satellite number passes ground testing system equipment scale, and structure difficulty is large, the cycle is long, is difficult to the satellite lead time adapting to constantly reduction.
Under the prerequisite of therefore not reducing in test function, constantly reduce equipment scale, reduce system constructing difficulty, shortening the system constructing cycle is the developing direction that following remote sensing satellite number passes ground test.
Summary of the invention
For the technical problem existed in above-mentioned prior art, the invention provides a kind of remote sensing satellite number and pass product automation test macro and method, this system and method can realize whole test functions that traditional remote sensing satellite number passes ground testing system, possesses the feature that system scale is little, structure is easy, the cycle is short simultaneously.
The present invention is realized by following technical proposals:
A kind of remote sensing satellite number passes product automation test macro, primarily of PXI system controller, test function module (being called for short PXI module collection), PXI cabinet and testing system software composition.
PXI system controller is the core component of whole test macro, for whole PXI platform provides Windows or other real time operating systems, is the middle bridge of PXI module and systems soft ware, PXI module and software is joined together jointly to complete test assignment.
PXI module collection is connected with PXI bus, and each module provides relatively independent test function.
Testing system software: coordinate with PXI module collection and realize corresponding function, the interactive interface with user is provided.
Described PXI module collection comprises:
1) telemetry-acquisition unit: analog satellite Integrated Electronic System telemetry-acquisition function, gathers the analog telemetering signal such as power supply, state, temperature that number passes product, is sent to PXI system controller after being processed into digital signal by PXI bus;
2) interface processing unit: analog satellite Integrated Electronic System and data transmission subsystem interface, data bus interface and Command Line Interface are provided, pass product broadcast platform data to number, send the instruction of note number, gather number and pass product digital telemetry data, carry out data interaction by PXI bus and PXI system controller.
Described PXI module collection also comprises radio-frequency signal source: generate specific waveforms signal (single carrier or modulating wave) according to configuration, the radiofrequency signal waveform that analog satellite number transfers out, product automation test macro is passed from closed loop, the matured product that this module can select special instrument manufacturer to issue for coordinating remote sensing satellite number.
Described PXI module collection also comprises high-speed data flow table: the real-time massive store unit providing test data, can carry out playback process as required, the matured product that this module can select special instrument manufacturer to issue to data afterwards.
Described PXI module collection also comprises VSA: the down-conversion and the intermediate frequency digital translation function that complete radiofrequency signal, fit applications software completes the radiofrequency signal quality analysis passed down satellite, fit applications software and high-speed data flow table complete the record of high-speed sample data, the matured product that this module can select special instrument manufacturer to issue.
Described PXI module collection also comprises programmable attenuator: the signal power adjustment completing radiofrequency signal, carries out data interaction, the matured product that this module can select special instrument manufacturer to issue by PXI bus and PXI system controller.
Described PXI cabinet provides solid and reliable mechanical structure platform for PXI controller and PXI module, and have good electric power system, cooling system design, cabinet can be designed to portable, rack or desk-top according to practical application request simultaneously.
Described testing system software operates in the operating system platform that PXI controller provides, and comprises PXI module driver, system software and user interface.
PXI module driver is the driver coordinating each test function module work and develop, so that by test function module integration in unified PXI test platform;
System software is the functional software based on LabVIEW, MATLAB or other program development, complete the functions such as testing process control, test data emulation, test data analysis, the main application software that the satellite data transmission test macro that the present invention proposes is equipped with comprises:
1) automatic test assignment planning control software: complete the control to whole data transmission subsystem product auto test flow, other application software collaborative works are organized according to test case regulation, configure the running parameter of other application software and test function module, collect each module testing result, generate test report;
2) System self-test control software design: send self-inspection order according to flow process to each PXI module, collect the feedback data of each PXI module, output system self-detection result after comprehensive descision;
3) satellite platform data simulation software: the emulated data generating prescribed form according to the interface protocol of data transmission subsystem and satellite other system, comprise satellite platform broadcast data, telemetry-acquisition order, telecommand data etc., and performed by interface processing unit;
4) telemetry analysis software: receive the satellite data transmission product working status remote measurement that PXI module (telemetry-acquisition unit, interface processing unit) feeds back, supply power voltage and the electric current of power module is gathered by LAN mouth or LXI mouth, rule according to a preconcerted arrangement carries out condition adjudgement, export telemetry sentence read result, and have regularly store and management function is carried out to telemetry;
5) Vector Signal Analysis software: the analysis having coordinated radiofrequency signal with VSA, the digitlization completing intermediate-freuqncy signal controls with storage, selects the software product supporting with VSA;
6) load data analysis software: complete the data analysis stored in high-speed data flow table, be bitstream data by I/Q data transformations, complete the functions such as number passes data format inspection, error rate analyzer, frame format is removed, load data decompress(ion) is looked soon, export main sentence read result, form test report;
7) other application software: the application software completing other functions, the local area network (LAN) time broadcast software etc. of function as provided the Data dissemination software of telemetry LAN broadcast function, when providing test macro school.
User interface is this test macro and user interactions interface, provides testing progress, Product Status, test result to show, and provides the input interfaces such as test case is worked out, test parameter is arranged.
Utilize above-mentioned remote sensing satellite number biography product automation test macro to carry out the method for automatic test, comprise following key step:
Step 1: complete testing equipment by test mode and be connected with Devices to test, runs automatic test assignment planning control software, and calling system self-inspection control software design starts self-inspection flow process;
Step 2: System self-test control software design collects each module self-checking result, and to automatic test assignment planning software feedback, self-inspection is by rear loading test case;
Step 3: start testing process by the time of user's setting, automatic test assignment planning control software transfer satellite platform data simulation software, telemetry analysis software, Vector Signal Analysis software and PXI module, send instruction by design use-case, receive process telemetry, utilize high-speed data flow table to receive satellite down-transmitting data, if measurement telemetry is abnormal, process by the prediction scheme of design in advance;
Step 4: after test data receives, automatic test assignment planning control software startup load data analysis software, transferring the I/Q data transformations stored in high-speed data flow table is bitstream data, carry out data format inspection, error rate analyzer, frame format is removed, load data decompress(ion) such as to look soon at the function, generates test report;
Step 5: the test output of load data analysis software collected by test assignment planning control software automatically, in conjunction with remote measurement sentence read result, exports final use-case test report.
Compared with prior art, the present invention has following beneficial effect:
Instant invention overcomes existing remote sensing satellite number biography ground testing system equipment scale huge, build the shortcoming that difficulty is large, the cycle is long, not only equipment scale comparatively existing equipment greatly reduce, and structure is easy, the cycle is short, in addition because system is based on general PXI architecture design, improve the flexibility of system.
Remote sensing satellite number disclosed in this invention passes ground testing system and has certain reference to other satellites or spacecraft ground Design of Test System.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is that remote sensing satellite number provided by the present invention passes product automation test macro block diagram.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Present system is the general PXI framework (PCIExtensionsforInstrumentation, the PCI towards instrument system expands, and is dominated a kind of universal test system bus of exploitation by National Instruments) based on ripe PC technology.
The present embodiment is that a kind of compact optical remote sensing satellite number passes product automation test macro and method of testing, as shown in Figure 1.This Optical remote satellite adopts the data transmission scheme of data compression → AOS format → concatenated coding → QPSK modulation → travelling wave tube amplification → aerial radiation, 1553B bus is adopted to communicate with Integrated Electronic System, receive data rate 800Mbps, chnnel coding adopts RS+3/4 convolutional encoding mode, transmitted data rates 200Mbps over the ground, it is X frequency range that number passes frequency range.
First test macro PXI module collection allocation plan and each module detail parameters is determined, specific as follows:
1) radio-frequency signal source, high-speed data flow table, VSA and the programmable attenuator matured product that special instrument manufacturer can be selected to issue according to the technical indicator of product on star, comprise the PXI module product of Agilent company and the production of NI company, concrete type selecting result is as following table.
Table 1 module type selecting table
2) telemetry-acquisition unit: gather the analog quantity remote measurement of data transmission subsystem product 16 tunnel, 16 road Temperature Quantity remote measurements under the control of application software, telemetry-acquisition unit carries out 10 bit quantizations to analog channel input signal, telemetry-acquisition chip adopts HI-546 or HI-548, send to controller by PXI bus after collection result is converted to digital quantity, the telemetry-acquisition cycle is 1 time/2 seconds.Signals collecting controls and adopts FPGA to process with the communication of PXI bus control unit.For the interface case that real simulation satellite integrated electronics subsystem passes with number, according to the PXI telemetry-acquisition unit of satellite interface control documents exploitation, design the requirement of building in specification in ground connection, overlap joint and wiring by satellite and carry out.
3) interface processing unit: two-way 1553B bus interface (master one is standby) and 18 road OC door Command Line Interface are provided.Interface disposable plates 1553B bus marco chip adopts 61580 chips, by configuration determine that a road is held as BC, another road and data transmission subsystem product all as RT end, chip can select DDC company, 58 or 772 product.Connector selects AXON company through the 1553B connector of ESA certification, and for avoiding wrong plug, the connector of main part and backup bus selects different model.OC door Command Line Interface in interface disposable plates adopts 7046 chips, and every sheet 7046 has 6 OC gate drivers, can with the load of 40mA.Instruction transmission, telemetry-acquisition and adopt FPGA to come with front-end information process such as the communications of PXI bus control unit.For the interface case that real simulation satellite integrated electronics subsystem passes with number, according to the PXI interface processing unit of satellite interface control documents exploitation, design the requirement of building in specification in ground connection, overlap joint and wiring by satellite and carry out.
According to the type selecting selecting PXI module model and application software scale to determine PXI system controller.Consider that the application software run in PXI controller is all higher to platform processes Capability Requirement, therefore the processor of more than outfit four core, the embedded controller of more than 4GB internal memory need be selected; Require higher when radio-frequency signal source, high-speed data flow table, VSA work simultaneously to overall system bandwidth in addition, therefore needing selective system total bandwidth to be not less than the product of 2GB/s, alternative products is the M9036A type of Agilent company production or the NI-PXIe-8135 type embedded controller of NI company production.Specific to the present embodiment, selection be the NI-PXIe-8135 controller of NI.
PXI cabinet type selecting is determined according to selecting the power of PXI module and PXI system controller and slot quantitative requirement.Consider that the groove number that radio-frequency signal source, high-speed data flow table, VSA take is more, module dissipation is also larger, therefore select the cabinet product of outfit 18 PXI/PXIe slots, alternative products is the M9018A type of Agilent company production or the NI-PXIe-1085 type PXI cabinet of NI company production.Specific to the present embodiment, selection be the NI-PXIe-1085 cabinet of NI.
PXI module driver aspect, radio-frequency signal source, high-speed data flow table, VSA and programmable attenuator pay corresponding driver by production firm with product, attach it on PXI controller.Master chip in telemetry-acquisition unit and interface processing unit is FPGA, utilizes the LabVIEW environment run in the controller to complete the drived control program development of corresponding PXI module.
Application software aspect, except Vector Signal Analysis software and load data analysis software is larger, function more complicated except, other softwares all can directly utilize LabVIEW or NITestStand to complete exploitation.Vector Signal Analysis software needs with selected PXI VSA in system supporting, and by PXI VSA, supplier provides software kit program, as the 89601VSA software of Agilent exploitation.Load data subsystem software has needed process, the function such as analysis and display of paired data, is developed by C++ or C# software.
User interface aspect, mainly comprise the display of testing process state, the display of use-case state, digital telemetering display, analog telemetering display, the display of data receiver disposition, the main display of remote measurement curve, warning message display etc., LabVIEW environment can be utilized to complete exploitation.
This test macro above-mentioned is utilized to carry out testing the programmable power supply also needing outfit one to have LAN/LXI interface, for powering to product on star.The satellite data transmission system of self-checking function is not possessed for part, also needs outfit load data simulator to be used for analog satellite load, pass product to number and send load data.
Above the implementation of a concrete case of the present invention is described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. remote sensing satellite number passes a product automation test macro, it is characterized in that, comprising:
PXI system controller: for whole PXI platform provides real time operating system;
PXI module collection: be connected with PXI bus, provides the direct interface with test product;
PXI cabinet: for PXI system provides secure mechanical structure platform, reliably power supply and cooling system;
Testing system software: coordinate with PXI module collection and realize corresponding function, the interactive interface with user is provided.
2. remote sensing satellite number according to claim 1 passes product automation test macro, and it is characterized in that, described PXI module collection comprises following assembly:
Telemetry-acquisition unit: gather the analog telemetering signal that number passes product, be sent to PXI system controller by PXI bus after being processed into digital signal;
Interface processing unit: provide data bus interface and Command Line Interface, passes product broadcast platform data to number, sends the instruction of note number, gather number and pass product digital telemetry data, carry out data interaction by PXI bus and PXI system controller.
3. remote sensing satellite number according to claim 2 passes product automation test macro, it is characterized in that, described analog telemetering signal comprises number and passes the power supply of product, state and temperature.
4. remote sensing satellite number according to claim 2 passes product automation test macro, it is characterized in that, also comprise radio-frequency signal source, specific waveforms signal is generated according to configuration, the radiofrequency signal waveform that analog satellite number transfers out, passes product automation test macro from closed loop for coordinating remote sensing satellite number.
5. remote sensing satellite number according to claim 2 passes product automation test macro, it is characterized in that, also comprises high-speed data flow table, provide the real-time massive store unit of test data, and carry out playback process to data as required.
6. remote sensing satellite number according to claim 2 passes product automation test macro, it is characterized in that, also comprise VSA, complete down-conversion and the intermediate frequency digital translation function of radiofrequency signal, fit applications software completes the radiofrequency signal quality analysis passed down satellite, and fit applications software and high-speed data flow table complete the record of high-speed sample data.
7. remote sensing satellite number according to claim 2 passes product automation test macro, it is characterized in that, also comprises programmable attenuator, completes the signal power adjustment of radiofrequency signal, carries out data interaction by PXI bus and PXI system controller.
8. remote sensing satellite number according to claim 1 passes product automation test macro, and it is characterized in that, described testing system software comprises PXI module driver, system software and user interface.
9. utilize arbitrary described remote sensing satellite number biography product automation test macro in claim 1 to 7 to carry out a method of testing, it is characterized in that, comprise the steps:
Step 1: complete testing equipment by test mode and be connected with Devices to test, runs automatic test assignment planning control software, and calling system self-inspection control software design starts self-inspection flow process;
Step 2: System self-test control software design collects each module self-checking result, and to automatic test assignment planning software feedback, self-inspection is by rear loading test case;
Step 3: start testing process by the time of user's setting, automatic test assignment planning control software transfer satellite platform data simulation software, telemetry analysis software, Vector Signal Analysis software and PXI module, send instruction by design use-case, receive process telemetry, utilize high-speed data flow table to receive satellite down-transmitting data, if measurement telemetry is abnormal, process by the prediction scheme of design in advance;
Step 4: after test data receives, automatic test assignment planning control software startup load data analysis software, transferring the I/Q data transformations stored in high-speed data flow table is bitstream data, carry out data format inspection, error rate analyzer, frame format is removed, load data decompress(ion) such as to look soon at the function, generates test report;
Step 5: the test output of load data analysis software collected by test assignment planning control software automatically, in conjunction with remote measurement sentence read result, exports final use-case test report.
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