CN109084805A - X-ray pulsar navigation terminal test system and method - Google Patents
X-ray pulsar navigation terminal test system and method Download PDFInfo
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- CN109084805A CN109084805A CN201811106202.9A CN201811106202A CN109084805A CN 109084805 A CN109084805 A CN 109084805A CN 201811106202 A CN201811106202 A CN 201811106202A CN 109084805 A CN109084805 A CN 109084805A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
Abstract
The present invention relates to X-ray pulsar navigation terminal test system and method, utilize the photon of Single energy X ray absorptionmetry source simulation X-ray pulsar radiation, after loading space background noise and electron source simulator load electronic noise by direct-current X-ray pipe respectively, it is received under vacuum conditions by pulsar navigation terminal, that is, X-ray detector, data are sent to controller processing and analyze and shown by display screen.The present invention is embodied as navigation terminal test and provides the purpose that similar spaces dynamic observes photon signal, provides high test environment true to nature for the development of pulsar navigation terminal and using type selecting.
Description
Technical field
The invention belongs to X-ray pulsar navigation technical fields, and in particular to a kind of X-ray pulsar navigation terminal test
System and method.
Background technique
X-ray pulsar navigation is a kind of new spatial celestial autonomous navigation technology, the pulse letter of X-ray pulsar radiation
Number have high stable cyclophysis and high stable state contour feature, good time base can be provided for spacecraft Deep-space TT&C network
Quasi- and georeferencing benchmark has potential deep space application value.As a kind of novel airmanship, space carrying is being carried out
Need to carry out navigation terminal a large number of experiments research before test and navigation application, and the X-ray that pulsar issues is can not to wear
It crosses atmosphere and reaches ground, this just needs to establish X-ray pulsar and space environment simulation source on ground.
Although the country establishes relevant ground simulation source for X-ray pulsar navigation, current simulation source can only be to X
Ray pulse star stationary singnal is simulated, and in practice in-orbit detector receive be contain orbit information, space effect
The dynamic X-ray pulse signal of information should be waited, but also is mingled with extremely complex space environment noise.With pulsar navigation
Technical research is goed deep into, and the source of X-ray pulsar ground simulation at present has been unable to satisfy ground experiment demand.In order to ground preferably
Pulsar navigation algorithm and system are verified, the dynamic pulse star signal for needing a set of energy in-orbit state observation of Simulated Spacecraft to arrive,
And it is able to verify that the evaluation system of navigation whole process.
Summary of the invention
The object of the present invention is to provide a kind of X-ray pulsar navigation terminal test system and method, solve existing skill
Present in art the disadvantages of dispersion test, numerical simulation and non-full physical testing, it is capable of providing pulsar navigation terminal test
The condition of full physics overall process realizes that navigation terminal to navigation terminal Performance Evaluation, tries on the ground for pulsar navigation space
It tests and preferably goes out optimal load with engineer application.
The technical scheme adopted by the invention is as follows:
X-ray pulsar navigation terminal test system, it is characterised in that:
Including photon generation and detecting area, control and data processing area and terminal demonstration area；
Photon generates and detecting area includes the grid-controlled X-ray tube of vacuum tube and its front end setting and the X-ray detection of rear end setting
Device；Modulating signal source is connected on grid-controlled X-ray tube；Grid-controlled X-ray tube includes direct-current X-ray pipe and Single energy X ray absorptionmetry source；Vacuum
The X-ray detector incidence end of pipe rear end is provided with slanting electron source simulator；
Control and data processing area include controller, and controller is interconnected with modulating signal source and X-ray detector respectively；
Terminal demonstration area includes display screen, and display screen and controller interconnect.
The grid-controlled X-ray tube transmitting terminal of vacuum tube front end is provided with collimating mirror.
Vacuum suction unit, including vacuum meter, mechanical pump and molecular pump are connected on vacuum tube.
Photon generates and the power supply of the interior setting of detecting area promising vacuum air pump group and grid-controlled X-ray tube power supply.
The controller of control and data processing area connection host computer, server and disk.
X-ray pulsar navigation terminal test method, it is characterised in that:
The following steps are included:
Using the x-ray photon of Single energy X ray absorptionmetry source simulation X-ray pulsar radiation, space is loaded by direct-current X-ray pipe respectively
After ambient noise and electron source simulator load electronic noise, visited under vacuum conditions by pulsar navigation terminal, that is, X-ray
It surveys device to receive, data are sent to controller processing and analyze and shown by display screen.
Controller is connected by modulating signal source with the grid-controlled X-ray tube being made of Single energy X ray absorptionmetry source and direct-current X-ray pipe
It connects, controller sends pulsar information to modulating signal source, and numeralization pulse profile is modulated into grid-control X by modulating signal source and is penetrated
The identifiable voltage signal of spool is sent to grid-controlled X-ray tube.
Grid-controlled X-ray tube and X-ray detector are respectively arranged at the front and back end of vacuum tube, and the grid-control X of vacuum tube front end is penetrated
Spool transmitting terminal is provided with collimating mirror, and quasi-parallel light is obtained after collimation.
The angularly disposed X-ray detector incidence end in vacuum tube rear end of electron source simulator, electron source simulator go out
The electronics beam trace and X-ray beam trace penetrated are at a certain angle, Chong Die with X-ray beam in detecting area.
The photonic data that X-ray detector is transmitted and received to controller, controller pass data to disk and are deposited
Storage.
The invention has the following advantages that
1, the present invention uses grid-controlled X-ray source analog pulse star signal, and host computer can calculate the how general of the in-orbit observation of spacecraft
Effect is strangled, to realize the modulation of pulsar Dynamic Signal, compared to the machinery modulation of optical chopper, realizes pulsar signal
Simulation is from static state to dynamic upgrading.
2, the present invention increases space background X-ray, space charged particle analog portion, by pulsar radiation mechanism and
Space environment modeling, realizes the simulation of electromagnetic environment in spatial observation.
3, the present invention organically combines hardware and software during pulsar navigation terminal test, and software configuration is flexible, shape
At organic whole.
4, the present invention realizes pulsar navigation terminal space and observes full physical process dynamic test, avoids numerical simulation
The uncertainty of randomness and partial element emulation, increases pulsar navigation terminal test reliability.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram；
Fig. 2 is the pulsar navigation terminal test process in the present invention；
Fig. 3 is the pulse profile schematic diagram of pulsar navigation terminal test of the present invention.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of X-ray pulsar navigation terminal test system, including photon generates and detecting area, control and
Data processing area and terminal demonstration area.Photon generate and detecting area include vacuum tube and its front end setting grid-controlled X-ray tube and
The X-ray detector of rear end setting；Modulating signal source is connected on grid-controlled X-ray tube；Grid-controlled X-ray tube includes direct-current X-ray
Pipe and Single energy X ray absorptionmetry source；The X-ray detector incidence end of vacuum tube rear end is provided with slanting electron source simulator.Control and
Data processing area includes controller, and controller is interconnected with modulating signal source and X-ray detector respectively.Terminal demonstration area includes aobvious
Display screen, display screen and controller interconnect.Each component passes through cable connection and communicates, and realizes the transmission and control of signal.
Quasi-parallel X-ray in order to obtain, the grid-controlled X-ray tube transmitting terminal of vacuum tube front end are provided with collimating mirror, after collimation
Quasi-parallel light reach vacuum tube exit end photon detected using navigation terminal, acquisition photonic data.
Vacuum suction unit, including vacuum meter, mechanical pump and molecular pump vacuum meter are connected on vacuum tube for measuring very
The vacuum degree of blank pipe, mechanical pump and molecular pump are for extracting vacuum air in tube.Vacuum tube and vacuum suction unit and its place
Platform collectively constitutes vacuum system, wherein vacuum pipe range 5m, bore diameter 40cm.
Photon generates and the power supply of the interior setting of detecting area promising vacuum air pump group and grid-controlled X-ray tube power supply, power supply point
It is not connected with controller and electrical equipment, power consumption control is carried out to electrical equipment according to the control instruction of controller.
The controller of control and data processing area connection host computer, server and disk.Host computer completes load pulses wheel
Wide numeralization, server provide x-ray photon data-handling capacity, and disk is for storing calibration pulse profile, navigation terminal
Receive data and data processed result.
X-ray pulsar navigation terminal test method based on above system, comprising the following steps:
Using the x-ray photon of Single energy X ray absorptionmetry source simulation X-ray pulsar radiation, space is loaded by direct-current X-ray pipe respectively
After ambient noise and electron source simulator load electronic noise, visited under vacuum conditions by pulsar navigation terminal, that is, X-ray
It surveys device to receive, data are sent to controller processing and analyze and shown by display screen.
Wherein:
Controller is connect by modulating signal source with the grid-controlled X-ray tube being made of Single energy X ray absorptionmetry source and direct-current X-ray pipe, control
Device processed sends pulsar information, including pulsar profile, flow, period etc. to modulating signal source.By modulating signal source by numerical value
Change pulse profile is modulated into the identifiable voltage signal of grid-controlled X-ray tube and is sent to grid-controlled X-ray tube.Controller is generated to photon
And detecting area sends voltage, current strength parameter in test run, grid-controlled X-ray tube controls X-ray according to voltage and current value
Photon radiation power.
Grid-controlled X-ray tube is modulated (grid-control) realization pulse signal simulation by being emitted flow to X-ray, and transmitting X is penetrated
Linear light, the generation of dynamic pulse X-ray are realized using grid-controlled X-ray tube.Its exit Xray waveform (or flow) is with grid
Modulated voltage signal waveform and corresponding change, can generate the dynamic X-ray pulse signal of high stable, high similarity.Direct-current X-ray
Guan being exactly to emit x-ray photon by grid-control adjustment mode, Single energy X ray absorptionmetry source is capable of providing the x-ray photon of 7 kinds of characteristic spectral lines
Signal is Al (1.49keV), Ti (4.51 keV), Cr(5.41 keV respectively), Fe (6.4 keV), Cu (8.05 keV), Zr
(15.77 keV), Mo(17.48 keV).
Grid-controlled X-ray tube and X-ray detector are respectively arranged at the front and back end of vacuum tube, and the grid-control X of vacuum tube front end is penetrated
Spool transmitting terminal is provided with collimating mirror, and quasi-parallel light is obtained after collimation.
The angularly disposed X-ray detector incidence end in vacuum tube rear end of electron source simulator, electron source simulator go out
The electronics beam trace and X-ray beam trace penetrated are Chong Die with X-ray beam in detecting area at 15 degree.
The photonic data that X-ray detector is transmitted and received to controller, arrival time and energy including x-ray photon
Amount, controller pass data to disk and are stored.
It controls and its task of data processing area includes:
1) to the generation of dynamic X-ray, detection, to navigation data treatment process and terminal demonstration carry out Interface Controller, parameter is set
Set, instruct transmission etc.；
2) pulsar database is constructed, simulation generates the modulation letter of the dynamic effects such as orbital data, space large scale, Doppler
Breath；
3) pulse profile is extracted from photon arrival time data, calculates navigation information；
4) processing analysis is carried out to the photonic data received, and is sent to display terminal；
Flow chart of data processing:
1, entire pulsar navigation terminal is installed on rearmost position in vacuum tube, realizes terminal and whole system electromechanical interface
Connection, seal vacuum tube；
2, the Interface Controller of whole system is checked, open terminal test mode, starting vacuum suction device realizes tube bank
10-3Pa adjusts temperature at pulsar navigation terminal, realizes optimum working temperature test；
3, by host computer loading simulation X-ray pulsar profile and period, pulse voltage is modulated by modulated signal device, is added
It is loaded on grid-controlled X-ray tube, gives off high x-ray photon true to nature；
4, grid-controlled X-ray tube radiation X ray photon, collimated mirror reflected radiation go out parallel X-ray light；
5, the Background X-ray photon of direct-current X-ray pipe radiation certain flow, electron source simulator loads electronic signal, through X-ray
Detector receives these photons, records its arrival time and energy information；
6, data are sent to control and data processing section, carry out data storage, complete data screening, time conversion and profile and mention
The processing such as take；
7, processing result is sent to terminal demonstration area, carries out the display of test result.
Fig. 3 be using the system carry out once test as a result, pulsar navigation terminal be MCP detector (microchannel
Template detector), vacuum chamber vacuum degree is maintained at 10-3Pa, test environment temperature are 20oC.The pulse profile of load is Crab
Pulsar signal, background noise levels are 3.6ph/cm as pulsar signal intensity2/ s, does not load electronic noise.Figure
3 observe pulse profile for MCP detector.
The contents of the present invention are not limited to cited by example, and those of ordinary skill in the art are by reading description of the invention
To any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (10)
1.X ray pulse star navigation terminal test macro, it is characterised in that:
Including photon generation and detecting area, control and data processing area and terminal demonstration area；
Photon generates and detecting area includes the grid-controlled X-ray tube of vacuum tube and its front end setting and the X-ray detection of rear end setting
Device；Modulating signal source is connected on grid-controlled X-ray tube；Grid-controlled X-ray tube includes direct-current X-ray pipe and Single energy X ray absorptionmetry source；Vacuum
The X-ray detector incidence end of pipe rear end is provided with slanting electron source simulator；
Control and data processing area include controller, and controller is interconnected with modulating signal source and X-ray detector respectively；
Terminal demonstration area includes display screen, and display screen and controller interconnect.
2. X-ray pulsar navigation terminal test system according to claim 1, it is characterised in that:
The grid-controlled X-ray tube transmitting terminal of vacuum tube front end is provided with collimating mirror.
3. X-ray pulsar navigation terminal test system according to claim 1, it is characterised in that:
Vacuum suction unit, including vacuum meter, mechanical pump and molecular pump are connected on vacuum tube.
4. X-ray pulsar navigation terminal test system according to claim 3, it is characterised in that:
Photon generates and the power supply of the interior setting of detecting area promising vacuum air pump group and grid-controlled X-ray tube power supply.
5. X-ray pulsar navigation terminal test system according to claim 1, it is characterised in that:
The controller of control and data processing area connection host computer, server and disk.
6.X ray pulse star navigation terminal test method, it is characterised in that:
The following steps are included:
Using the photon of Single energy X ray absorptionmetry source simulation X-ray pulsar radiation, space background is loaded by direct-current X-ray pipe respectively
After noise and electron source simulator load electronic noise, under vacuum conditions by pulsar navigation terminal, that is, X-ray detector
It receives, data are sent to controller processing and analyze and shown by display screen.
7. X-ray pulsar navigation terminal test method according to claim 6, it is characterised in that:
Controller is connect by modulating signal source with the grid-controlled X-ray tube being made of Single energy X ray absorptionmetry source and direct-current X-ray pipe, control
Device processed sends pulsar information to modulating signal source, and numeralization pulse profile is modulated into grid-controlled X-ray tube by modulating signal source
Identifiable voltage signal is sent to grid-controlled X-ray tube.
8. X-ray pulsar navigation terminal test method according to claim 7, it is characterised in that:
Grid-controlled X-ray tube and X-ray detector are respectively arranged at the front and back end of vacuum tube, the grid-controlled X-ray tube of vacuum tube front end
Transmitting terminal is provided with collimating mirror, and parallel X-ray light is obtained after collimation.
9. X-ray pulsar navigation terminal test method according to claim 8, it is characterised in that:
The angularly disposed X-ray detector incidence end in vacuum tube rear end of electron source simulator, the electricity of electron source simulator outgoing
Beamlet road and X-ray beam trace are Chong Die with X-ray beam in detecting area at 15 degree of angles.
10. X-ray pulsar navigation terminal test method according to claim 9, it is characterised in that:
The photonic data that X-ray detector is transmitted and received to controller, controller pass data to disk and are stored.
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