CN111654332A - Deep-buried equivalent communication test system after deep space impactor hits - Google Patents
Deep-buried equivalent communication test system after deep space impactor hits Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 115
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000004088 simulation Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000001228 spectrum Methods 0.000 claims description 38
- 230000002238 attenuated effect Effects 0.000 claims description 15
- 230000005855 radiation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
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- 238000005516 engineering process Methods 0.000 abstract description 4
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- 238000002474 experimental method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000013077 target material Substances 0.000 description 3
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- 230000005672 electromagnetic field Effects 0.000 description 2
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
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Abstract
The invention discloses a deep-buried equivalent communication test system after a deep space impactor hits, which comprises a deep space environment simulation cabin, a microwave darkroom, an impactor, a target, signal receiving test equipment and the like. The microwave darkroom is arranged in the deep space environment simulation cabin, the target is arranged in the microwave darkroom, the impactor is buried in the target, the signal receiving and testing equipment is used for receiving a signal sent by the communication module in the impactor through the signal transmitting antenna, a deep burying equivalent communication test is simulated after the deep space impactor is collided, and the communication performance of the deep space impactor after the deep space impactor is collided is tested. The target targets made of different materials are arranged in the microwave darkroom, and the signal quality of the communication module in the impactor under different working conditions is simulated and tested by considering conditions such as different pit collision depths, different forms and the like. The method for testing the deep-buried equivalent communication after the deep-space impactor is collided is simple and reliable, is easy to implement, can meet the requirements of the deep-buried equivalent communication test after the deep-space impactor is collided, and lays a foundation for the development of the deep-buried equivalent communication technology after the deep-space impactor is collided in the future.
Description
Technical Field
The invention belongs to the technical field of earth satellites or other deep space exploration aircrafts, and particularly relates to a deep-buried equivalent communication test system after a deep space impactor collides.
Background
The deep space exploration task is a complex systematic project, the impact penetration exploration is one of efficient means for realizing the internal exploration of the celestial body outside the ground in the deep space, and the deep space exploration and sampling device has the characteristics of simple structure, high integration level, flexible configuration and the like, can be penetrated into the celestial body by consuming less resources, carries out various forms of scientific tasks such as in-situ exploration, sampling return and the like, and has wide application prospects in the fields of deep space exploration and the like.
After the deep space impactor is impacted into the target celestial body, scientific experiments can be continuously carried out in the deep space impactor, test data are sent to the detector surrounding the target celestial body through the impactor, and the detector collects the data and then sends the data back to the ground for the ground to carry out scientific experiment data analysis. The communication capability of deep burying of the deep space impactor after the impact is one of key technologies for guaranteeing the survival capability of the impactor after the impact, and therefore, an equivalent communication test of the deep burying of the deep space impactor after the impact needs to be realized in a ground simulation environment.
Currently, no good method for comparing the quality of signals sent by communication modules in the deep space impactor under different satellite surfaces and different states after the impact is available for the equivalent communication test of deep burying of the deep space impactor after the impact. Lack the impacter and hit back deep buried communication contrast data, it is inconvenient to bring the development of future deep space impacter back deep buried communication technique, will be unfavorable for the deep space impacter to carry out the striking and pierce through the detection task.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the deep-buried equivalent communication test system after the deep-space impactor is collided is provided, the deep-buried communication state after the deep-space impactor is collided is effectively simulated, and the communication performance of the deep-buried impactor is tested.
The purpose of the invention is realized by the following technical scheme: a deep space impactor after-impact deep-buried equivalent communication test system comprises: the system comprises an environment simulation cabin, a microwave darkroom, an impactor communication module, an impactor communication antenna, a target, an impact pit, a signal receiving antenna, a signal attenuator and a spectrum analyzer; wherein the microwave anechoic chamber is arranged in the environment simulation cabin; the impactor, the target and the signal receiving antenna are arranged in the microwave darkroom, the target is arranged on the bottom layer of the microwave darkroom, the impactor is buried in the target, and the signal receiving antenna is arranged on the top layer of the microwave darkroom and is positioned above the impactor; the striker communication module and the striker communication antenna are connected through a high-frequency cable and are arranged together inside the striker to be integral with the striker; the signal receiving antenna, the signal attenuator and the spectrum analyzer are connected by a high-frequency cable, and the signal attenuator and the spectrum analyzer are arranged outside the environment simulation cabin.
In the deep-buried equivalent communication test system after the deep space impactor is collided, the environment simulation cabin simulates a deep-space dry and cold environment through temperature and humidity control in the cabin; the microwave anechoic chamber isolates external electromagnetic environment radiation interference through a wave absorbing wall arranged on the inner wall; the impactor adopts an engineering prototype, an impactor communication module and an impactor communication antenna are arranged in the impactor, and the impactor is deeply buried in the target to simulate the state of the impactor after being impacted into the surface of a deep space star; the impactor communication module and the impactor communication antenna send signals to the outside, the signal receiving antenna is arranged above the impactor and used for receiving signals sent by the impactor communication module and transmitting the signals to the signal attenuator through the high-frequency cable, the signals are attenuated to obtain attenuated signals, the attenuated signals are accessed into the spectrum analyzer through the high-frequency cable, and the spectrum analyzer measures the intensity of the attenuated signals.
In the deep-buried equivalent communication test system after the deep space impactor hits, the formula of the strength of the attenuated signal is as follows:
PR＝PT-Ltc+GT-LS+GR-SF-Lrc
wherein, PRIs the received signal strength, P, of the spectrum analyzerTIs the signal strength, L, emitted by the striker communication moduletcIs the loss of the signal through the high-frequency cable connected between the communication module of the striker and the communication antenna, GTGain of the communication antenna; l isSIs the path loss of the signal from the striker communication antenna to the signal receiving antenna; gRIs the gain of the signal receiving antenna; sFIs the loss of the signal through the attenuator; l isrcIs the loss of the signal through the high frequency cable from the receiving antenna to the signal attenuator and the signal attenuator to the spectrum analyzer.
In the deep-buried equivalent communication test system after the deep space impactor is collided, the signal intensity curve formula of the impactor communication module in the impactor under the material, different collision pit depths and different forms of the target is as follows:
PT＝a+b·l2+c·α2
wherein, PTIs the signal strength emitted by the striker communication module; a is the influence coefficient of the material of the target on the result measured by the spectrum analyzer; b.l2Is the influence of different pit depths on the measured result of the spectrum analyzer, wherein b is the pit depth influence coefficient, l is the pit depth, c. α2The impact of the collision pit form on the measured result of the spectrum analyzer, wherein c is the impact coefficient of the collision pit form, and α is the size of an included angle between a connecting line from the receiving antenna to the mass center of the impactor and a connecting line from the mass center of the impactor to the space center of the collision pit, wherein the connecting line uses the mass center of the impactor as an origin.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention can effectively simulate the communication state of the deep-buried impactor after the deep-space impactor is collided and test the communication performance of the impactor after the deep-buried impactor by testing the communication performance of the impactor deeply buried in the target in the microwave darkroom environment.
(2) The invention can simulate different conditions such as pit-hitting depth, form and the like by arranging targets made of different materials in the microwave darkroom, and can test the equivalent communication performance of the striker after being impacted on the surfaces of different stars.
(3) The method for testing the after-collision deep-buried equivalent communication of the deep space impactor is simple and reliable, is easy to implement, can meet the requirements of the after-collision deep-buried equivalent communication test of the deep space impactor, and lays a foundation for the development of the after-collision deep-buried equivalent communication technology of the deep space impactor in the future.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a deep-buried equivalent communication test system after a deep space impactor provided by an embodiment of the invention is collided;
fig. 2 is a schematic diagram of a principle of a deep-space impactor after-impact equivalent communication test method of another material according to an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic diagram of a deep-buried equivalent communication test system after a deep space impactor provided by an embodiment of the invention. As shown in fig. 1, the deep space impactor after-impact deep-buried equivalent communication test system comprises: the system comprises an environment simulation cabin 1, a microwave darkroom 2, an impactor 3, an impactor communication module 4, an impactor communication antenna 5, a target 6, an impact pit 7, a signal receiving antenna 8, a signal attenuator 9 and a spectrum analyzer 10; wherein,
the microwave anechoic chamber 2 is arranged in the environment simulation cabin 1; the impactor 3, the target 6 and the signal receiving antenna 8 are arranged in the microwave darkroom 2, the target 6 is arranged at the bottom layer of the microwave darkroom 2, the impactor 3 is buried in the target 6, and the signal receiving antenna 8 is arranged at the top layer of the microwave darkroom 2 and is positioned above the impactor 3; the striker communication module 4 and the striker communication antenna 5 are connected by a high-frequency cable and are arranged together inside the striker 3, integral with it; the signal receiving antenna 8, the signal attenuator 9 and the spectrum analyzer 10 are connected by a high-frequency cable, and the signal attenuator 9 and the spectrum analyzer 10 are arranged outside the environment simulation chamber.
The environment simulation cabin 1 simulates a deep-space dry and cold environment through temperature and humidity control in the cabin; the microwave anechoic chamber 2 isolates external electromagnetic environment radiation interference through a wave absorbing wall arranged on the inner wall; the impactor 3 adopts an engineering prototype and is internally provided with an impactor communication module 4 and an impactor communication antenna 5, the impactor 3 is deeply buried in the target 6, and the state of the impactor 3 after being impacted into the surface of the deep space star is simulated; the impactor communication module 4 and the impactor communication antenna 5 send signals to the outside, the signal receiving antenna 8 is arranged above the impactor 3, receives signals sent by the impactor communication module 4 and transmits the signals to the signal attenuator 9 through a high-frequency cable, the signals are attenuated to obtain attenuated signals, the attenuated signals are accessed into the spectrum analyzer 10 through the high-frequency cable, and the spectrum analyzer 10 measures the strength of the attenuated signals.
The formula for the intensity of the attenuated signal is as follows:
PR(dBm)＝PT(dBm)-Ltc(dB)+GT(dB)-LS(dB)+GR(dB)-SF(dB)-Lrc(dB)
wherein, PR(dBm) is the received signal strength of the spectrum analyzer, PT(dBm) is the signal strength, L, emitted by the striker communication moduletc(dB) Is the loss of the signal through the high-frequency cable connected between the communication module of the striker and the communication antenna, GT(dB) gain of the communication antenna; l isS(dB) is the path loss of the signal from the striker communications antenna to the signal receiving antenna; gR(dB) is the gain of the signal receiving antenna; sF(dB) is the loss of the signal through the attenuator; l isrc(dB) is the loss of the signal through the high frequency cable from the receive antenna to the signal attenuator and the signal attenuator to the spectrum analyzer.
By arranging targets of different materials and the depth and the shape of the collision pit, the path loss L between a signal from a communication antenna of the impactor and a signal receiving antenna can be influencedS(dB). In the formula, other items can not be changed, a variable control method is adopted to change a certain parameter in the material, the depth and the form of the collision pit of the target, the strength of a signal sent by the communication module of the impactor can be measured by comparison in a spectrum analyzer, and the simulation test of the deep-buried equivalent communication performance of the deep-space impactor after collision can be carried out by developing a plurality of groups of comparison tests.
The deep space environment simulation cabin 1 is used for simulating the environment state of the surface of a star body and providing equivalent temperature and humidity environment conditions for a communication test.
The microwave camera 2 is arranged in the deep space environment simulation cabin, the walls and the top of the periphery of the microwave camera are walls with wave-absorbing materials, so that the interference of an external electromagnetic field environment on a communication test can be isolated, and a good electromagnetic field environment is provided for a deep-buried equivalent communication test after the deep space impactor is collided.
The impactor 3 is a test target, a communication module 4 and a signal transmitting antenna 5 are arranged in the impactor, the impactor communication module is responsible for generating telemetering signals, and the telemetering signals are radiated outwards through the signal transmitting antenna to simulate the communication state of the impactor after collision.
The target 6 is composed of different types of soil, and simulates the soil environment around the impactor after the impactor is collided into the surfaces of different stars. The targets of different materials in this example, 6-target in fig. 1, represent soft sand type targets, and target 6 in fig. 2 represents hard stone type targets.
The collision pits 7 are different in shape and different in depth after the simulated striker collides into the target under different conditions.
The signal receiving and measuring equipment consists of a signal receiving antenna 8, a signal attenuator 9 and a spectrum analyzer 10, wherein the signal receiving antenna, the signal attenuator and the spectrum analyzer are connected through a high-frequency cable. The signal receiving antenna is responsible for receiving the telemetering signal sent by the striker signal transmitting antenna; the signal attenuator attenuates the telemetering signal received by the signal receiving antenna and outputs the telemetering signal to the spectrum analyzer; the spectrum analyzer analyzes the strength, waveform and other characteristics of the received telemetering signal and tests the deep-buried equivalent communication performance of the impactor after the impactor is collided.
The equivalent communication test method comprises the following test steps:
the method comprises the following steps: the target made of soft sandy soil type materials shown in figure 1 is arranged in a microwave darkroom, different pit-hitting depths and different pit-hitting shapes are simulated, and the signal quality sent by a communication module in a striker in the target made of the same material is tested in a deep-buried equivalent communication test environment after the deep-space striker is bumped.
Step two: the hard stone type target shown in figure 2 is arranged in a microwave darkroom, the same pit-hitting depth and pit-hitting shape in the first step are simulated, and the signal quality sent by the communication module in the impactor in the targets made of different materials is tested in the environment of the deep-buried equivalent communication test after the deep-space impactor is impacted.
The formula of the signal intensity curve of the striker communication module in the striker under the material, different pit-hitting depths and different forms of the target is as follows:
PT＝a+b·l2+c·α2
wherein, PTIs the signal strength emitted by the striker communication module; a is the influence coefficient of the material of the target on the result measured by the spectrum analyzer; b.l2Is the influence of different depth of the pit on the measured result of the spectrum analyzer, wherein b is the depth of the pitCoefficient of influence,. l.depth of impact pit,. c. α2The impact of the collision pit form on the measured result of the spectrum analyzer, wherein c is the impact coefficient of the collision pit form, and α is the size of an included angle between a connecting line from the receiving antenna to the mass center of the impactor and a connecting line from the mass center of the impactor to the space center of the collision pit, wherein the connecting line uses the mass center of the impactor as an origin.
Furthermore, in a deep-buried equivalent communication test system after the deep-space impactor is collided, multiple groups of test data are obtained by testing the signal intensity of the communication module in the impactor under different target materials, different pit-collision depths and different forms. And fitting the multiple groups of data by using the following formula to obtain a signal intensity curve of the communication module in the impactor under different target materials, different pit collision depths and different forms.
PTi＝ai+bi·li 2+ci·αi 2
Wherein: pTiIs the strength of the signal emitted by the striker communication module in the ith test; a isiInfluence coefficients of targets made of different materials on the measured result of the spectrum analyzer in the ith test are obtained; bi·li 2Is the influence of different pit depths on the measured result of the spectrum analyzer in the ith test, wherein biIs the pit-hitting depth influence coefficient liIs the depth of the knock pit; c. Ci·αi 2Is the effect of crater formation on the results of the spectrum analyzer in the ith experiment, where ciIs the impact coefficient of pit morphology, αiThe included angle between the connecting line from the receiving antenna to the mass center of the impactor and the connecting line from the mass center of the impactor to the space center of the collision pit is the size of the included angle of the collision pit by taking the mass center of the impactor as the origin.
After the test system obtains the signal intensity curve through the fitting of a plurality of groups of test data, the material influence coefficient a can be analyzed through comparisoniPit-collision depth influence coefficient biImpact coefficient of pit collisioniAnd analyzing the influence of the target material, the collision pit depth and the collision pit form on the communication capacity.
The embodiment provides a deep-buried equivalent communication test method after a deep space impactor hits, and a test system comprises a deep space environment simulation cabin, a microwave darkroom, an impactor, a target, signal receiving test equipment and the like. The microwave darkroom is arranged in the deep space environment simulation cabin, the target is arranged in the microwave darkroom, the impactor is buried in the target, the signal receiving and testing equipment is used for receiving a signal sent by the communication module in the impactor through the signal transmitting antenna, a deep burying equivalent communication test is simulated after the deep space impactor is collided, and the communication performance of the deep space impactor after the deep space impactor is collided is tested. The target targets made of different materials are arranged in the microwave darkroom, and the signal quality of the communication module in the impactor under different working conditions is simulated and tested by considering conditions such as different pit collision depths, different forms and the like. The method for testing the deep-buried equivalent communication after the deep-space impactor is collided is simple and reliable, is easy to implement, can meet the requirements of the deep-buried equivalent communication test after the deep-space impactor is collided, and lays a foundation for the development of the deep-buried equivalent communication technology after the deep-space impactor is collided in the future.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (4)
1. The utility model provides a deep space impacter buries equivalent communication test system deeply after hitting which characterized in that includes: the system comprises an environment simulation cabin (1), a microwave darkroom (2), an impactor (3), an impactor communication module (4), an impactor communication antenna (5), a target (6), an impact pit (7), a signal receiving antenna (8), a signal attenuator (9) and a spectrum analyzer (10); wherein,
the microwave anechoic chamber (2) is arranged in the environment simulation cabin (1); the impactor (3), the target (6) and the signal receiving antenna (8) are arranged in the microwave darkroom (2), the target (6) is arranged at the bottom layer of the microwave darkroom (2), the impactor (3) is buried in the target (6), and the signal receiving antenna (8) is arranged at the top layer of the microwave darkroom (2) and is positioned above the impactor (3); the striker communication module (4) and the striker communication antenna (5) are connected by a high-frequency cable and are arranged together inside the striker (3) and are integral with the latter; the signal receiving antenna (8), the signal attenuator (9) and the spectrum analyzer (10) are connected by a high-frequency cable, and the signal attenuator (9) and the spectrum analyzer (10) are arranged outside the environment simulation cabin.
2. The deep space impactor post-impact deep-buried equivalent communication testing system according to claim 1, characterized in that: the environment simulation cabin (1) simulates a deep-space dry and cold environment through temperature and humidity control in the cabin; the microwave anechoic chamber (2) isolates external electromagnetic environment radiation interference through a wave absorbing wall arranged on the inner wall; the impactor (3) adopts an engineering prototype, an impactor communication module (4) and an impactor communication antenna (5) are arranged in the impactor (3), the impactor (3) is deeply buried in the target (6), and the state of the impactor (3) after being impacted into the surface of the deep space star is simulated; the impactor communication module (4) and the impactor communication antenna (5) send signals to the outside, the signal receiving antenna (8) is arranged above the impactor (3), receives signals sent by the impactor communication module (4) and transmits the signals to the signal attenuator (9) through a high-frequency cable, the signals are attenuated to obtain attenuated signals, the attenuated signals are accessed into the spectrum analyzer (10) through the high-frequency cable, and the spectrum analyzer (10) measures the strength of the attenuated signals.
3. The deep space impactor post-impact deep-buried equivalent communication testing system according to claim 2, characterized in that: the formula for the intensity of the attenuated signal is as follows:
PR＝PT-Ltc+GT-LS+GR-SF-Lrc
wherein, PRIs the received signal strength, P, of the spectrum analyzerTIs the signal strength, L, emitted by the striker communication moduletcIs that the signal passes through a high connection between the communication module of the striker and the communication antennaLoss due to frequency cable, GTGain of the communication antenna; l isSIs the path loss of the signal from the striker communication antenna to the signal receiving antenna; gRIs the gain of the signal receiving antenna; sFIs the loss of the signal through the attenuator; l isrcIs the loss of the signal through the high frequency cable from the receiving antenna to the signal attenuator and the signal attenuator to the spectrum analyzer.
4. The deep space impactor post-impact deep-buried equivalent communication testing system according to claim 3, wherein: the formula of the signal intensity curve of the striker communication module in the striker under the material, different pit-hitting depths and different forms of the target is as follows:
PT＝a+b·l2+c·α2
wherein, PTIs the signal strength emitted by the striker communication module; a is the influence coefficient of the material of the target on the result measured by the spectrum analyzer; b.l2Is the influence of different pit depths on the measured result of the spectrum analyzer, wherein b is the pit depth influence coefficient, l is the pit depth, c. α2The impact of the collision pit form on the measured result of the spectrum analyzer, wherein c is the impact coefficient of the collision pit form, and α is the size of an included angle between a connecting line from the receiving antenna to the mass center of the impactor and a connecting line from the mass center of the impactor to the space center of the collision pit, wherein the connecting line uses the mass center of the impactor as an origin.
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