CN111538019B - Auxiliary laser indication beacon and autonomous navigation measurement system for deep space impact detection - Google Patents
Auxiliary laser indication beacon and autonomous navigation measurement system for deep space impact detection Download PDFInfo
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- CN111538019B CN111538019B CN202010245771.2A CN202010245771A CN111538019B CN 111538019 B CN111538019 B CN 111538019B CN 202010245771 A CN202010245771 A CN 202010245771A CN 111538019 B CN111538019 B CN 111538019B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/003—Bistatic lidar systems; Multistatic lidar systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses an auxiliary laser indication beacon and an autonomous navigation measurement system for deep space impact detection. The collision detector is provided with a laser sensor and is used for receiving laser signals reflected by the surface of the target star, and the autonomous navigation measurement system comprises a plurality of measurement modes: the auxiliary laser indication beacon has a distance measurement function and can provide distance measurement navigation information for the target star surrounding device. The invention can be used in the space missions such as asteroid impact, comet impact, firearms impact, soil guard impact and the like, further increases the number of observables by the auxiliary laser indication beacon system based on the original navigation observables, improves the navigation precision of the impact detector, provides autonomous navigation service for the target star surrounding device, and is a system integrating laser indication and autonomous navigation.
Description
Technical Field
The invention relates to an auxiliary laser indication beacon and an autonomous navigation measurement system for deep space impact detection, and belongs to the technical field of deep space impact detection.
Background
With the development and progress of space technology, the means of deep space detection is developed from initial fly-by detection to current multi-mode combined detection of surrounding, landing, inspection, sampling and the like, so that the spanning from landing in-place detection by surrounding remote sensing detection and surface inspection to surface soil sampling is realized, the development is proceeding to the directions of full-space three-dimensional comprehensive detection, subsurface and internal depth detection, and the application of surface deep drilling and impact detection means is generated. Compared with a deep drilling detector which depends on a complex drilling device, the impact detector has the characteristics of simple and reliable structure, good integrality and flexible functional configuration, consumes less resources and can penetrate the surface of a target celestial body, and is an efficient means for realizing the internal detection of the celestial body.
The deep space impact detection task puts forward higher demands on navigation capability, and the traditional asteroid detection carries a large number of navigation sensors, such as astronomical angle measurement sensors, speed measurement sensors, relative distance sensors, ground radio sensors and the like, and is not suitable for small impact detectors.
Disclosure of Invention
The technical problems solved by the invention are as follows: the auxiliary laser indication beacon and autonomous navigation measurement system for deep space impact detection is provided, can be used for the space missions such as asteroid impact, comet impact, firearms impact, soil guard impact and the like, further increases the quantity of observables through the laser auxiliary beacon system, provides the navigation precision of an impact detector, provides autonomous navigation service for an asteroid circulator, and is a system integrating laser indication and autonomous navigation.
The technical scheme of the invention is as follows: an auxiliary laser pointer beacon and autonomous navigational measurement system for deep space impact detection, comprising: an auxiliary laser indication beacon (2), an impact detector (8) and a laser sensor (7);
the auxiliary laser indication beacon (2) emits laser to the surface of the target star (5);
the impact detector (8) is provided with a laser sensor (7) for receiving laser signals reflected by the surface of the target star;
the system has the following measurement modes:
the first mode is that the impact detector (8) provides navigation information for the impact detector (8) through the relative frequency conversion of the laser reflected by the star surface of the sensitive target;
the second mode is that the auxiliary laser indication beacon (2) emits a plurality of lasers, a set shape pattern is formed on the surface of the target star, and image matching navigation information is provided for the impact detector (8);
in a third mode, the auxiliary laser indication beacon (2) has a distance measurement function and can provide distance measurement navigation information for the target star circulator.
Preferably, the first mode is performed simultaneously with the third mode, and the second mode is not performed.
Preferably, the second mode and the third mode are performed simultaneously, and the first mode is not performed.
Preferably, the first mode, the second mode and the third mode are performed simultaneously.
Preferably, the laser sensor carried by the impact detector acquires navigation volume measurement through sensitive asteroid reflected laser information.
Preferably, the auxiliary laser pointer beacon may be mounted on the asteroid concentrator.
Preferably, the auxiliary laser pointer beacon is a laser transmitter.
Preferably, a split type structure is adopted, so that the load quantity carried by the impacter is reduced, and the design difficulty of the impaction detector is simplified.
Preferably, the laser transmitters may be mounted on the target star surround to transmit laser light to specific locations of the asteroid to provide an auxiliary navigation beacon for the impact detector.
Preferably, in a firearms impact mission scenario, the auxiliary laser pointer beacon may be mounted on the surface of the Mars.
Compared with the prior art, the invention has the advantages that:
(1) The invention uses split structure design, and the laser emitter and the laser sensor are respectively arranged on the target star surrounding device and the impact detector, so that the load quantity carried on the impact detector is reduced, the impact detector model is simplified, and the impact detection cost is reduced.
(2) The invention establishes an auxiliary laser indication beacon system, and the laser emitter emits laser in a specific area on the surface of the target star to provide new navigation measurement for the impact detector, so that the navigation precision of the impact detection task of the impact detector can be improved.
(3) The laser auxiliary indication beacon has the distance measuring function, provides autonomous navigation service for the target star circulator, and is a system integrating laser indication and autonomous navigation.
Drawings
Fig. 1 is a schematic diagram of an auxiliary laser indication beacon for deep space impact detection and an autonomous navigation measurement system according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific embodiments.
The invention discloses an auxiliary laser indication beacon and an autonomous navigation measurement system for deep space impact detection, which can be applied to the field of deep space impact detection and comprise an auxiliary laser indication beacon, an impact detector and a laser sensor. The auxiliary laser indication beacon is a laser emitter and emits laser to the surface of the target star. The collision detector is provided with a laser sensor and is used for receiving laser signals reflected by the surface of the target star, and the autonomous navigation measurement system comprises the following measurement modes: in the first mode, the impact detector provides navigation information for the impact detector through the frequency relative transformation of the laser reflected by the star surface of the sensitive target; the second mode is that the auxiliary laser instructs the beacon to emit a plurality of lasers, a set shape pattern is formed on the surface of the target star, and image matching navigation information is provided for the impact detector; in a third mode, the auxiliary laser indication beacon has a distance measurement function, and distance measurement navigation information can be provided for the target star circulator. The invention can be used in the space missions such as asteroid impact, comet impact, firearms impact, soil guard impact and the like, further increases the number of observables by the auxiliary laser indication beacon system based on the original navigation observables, improves the navigation precision of the impact detector, provides autonomous navigation service for the target star surrounding device, and is a system integrating laser indication and autonomous navigation.
The invention provides an auxiliary laser indication beacon and an autonomous navigation measurement system for deep space impact detection, which are characterized in that the auxiliary laser indication beacon emits laser to a specific area of a target star through a separated configuration design method, and an impact detector inverts speed and position information through the offset and image information of laser measured by a laser sensor to provide auxiliary observation quantity for navigation filtering, so that the load carrying quantity of the impact device is reduced, the calculated quantity is reduced, and the impact precision is improved. Meanwhile, the auxiliary laser indication beacon has a distance measurement function, can provide distance measurement navigation information for the target star circulator and navigation service for the target star circulator, and is a system integrating laser indication and autonomous navigation.
As shown in fig. 1, the invention provides an auxiliary laser indicating beacon and an autonomous navigation measurement system for deep space impact detection, which can be used in the field of deep space impact detection and comprises an auxiliary laser indicating beacon (2), an impact detector (8) and a laser sensor (7). The invention can provide two navigation information for the impact detector (8), and can provide navigation information for the target star circulator (1), thereby being a system integrating laser indication and autonomous navigation.
The auxiliary laser indicates the beacon (2) to send the laser (3) to the selected area of the target star (5), the impact detector (8) receives the laser (6) reflected by the target star (5) through the laser sensor (7), the laser sensor (7) measures the offset or image information of the reflected laser (6) to invert out the speed and position information, and the auxiliary observation quantity is provided for the impact detector (8). By means of a split type configuration design method, the auxiliary laser indication beacon (2) is arranged on the target star circulator (1), and the load carried by the impact detector (8) is reduced. The auxiliary laser indication beacon (2) has a distance measurement function, and can measure the relative distance information between the target star surrounding device (1) and the target star (5).
When the system is used for detecting the asteroid impact, the preferable scheme is as follows: the target star (5) is a space star which needs to be detected by the impact detector, and is preferably: asteroid, comet, mars satellite, earth satellite; when the system is used for asteroid impact detection, the target star (5) is an asteroid (5), and the target star circulator (1) is an asteroid circulator (1). The minor planet surrounding device (1) is provided with an impact detector (8), and the minor planet surrounding device (1) releases the impact detector (8) at set time to implement the impact detection task. In the process that the impact detector (8) impacts the asteroid (5), an auxiliary laser indication beacon (2) on the asteroid circulator (1) emits laser (3) to a selected position on the surface of the asteroid (5) to form a laser point source or a set pattern (4), a laser sensor (7) carried by the impact detector (8) acquires auxiliary navigation sensitive information, and meanwhile, the auxiliary indication beacon also has a distance measurement function and can provide relative distance information between the asteroid (5) and the asteroid circulator (1) so as to provide navigation information for the asteroid circulator (1).
The preferable scheme is as follows: the laser emission power of the auxiliary laser pointer beacon (2) is determined according to the distance between the asteroid surrounding device (1) and the asteroid (5), the reflectivity of the surface of the asteroid (5), the distance between the asteroid (5) and the impact detector (8) and the minimum acceptable signal energy of the laser sensor (7). The deep space optical system can accept-70 dBW signal at minimum, and the further preferable scheme is as follows:
the inventive laser sensor (7) is set to a minimum acceptable signal of-50 dBW, the reflectivity of the asteroid is preferably set to 0.1, and the laser beam diffusion attenuation G is preferably set ct |(dBW)＝-10lgπ(θL) 2 In the formula, preference is given to
Is the divergence angle of laser, lambda is the wavelength of the laser source, D out For emitting laser diameters; the navigation precision of the striker striking detection task is further improved;
further preferably considering λ=589nm, d out The laser sensor (7) receives laser gain G, wherein the distance between the laser emission point and the receiving point is =0.8cm rt |(dBW)＝10lgπ(D in /2) 2 In D in The diameter of the laser sensor (7) is preferably 10cm, the asteroid surrounding device (1) is considered to release the impact detector at a position 50km away from the surface of the asteroid (5), the allowance of 6dBW is considered, the emission power of the auxiliary laser indication beacon is about 12.5W, and the navigation precision of the impact detection task of the impact device is further improved;
the further preferable scheme is as follows: regarding measurement mode one, by
Relative velocity v of impact detector (8) with respect to asteroid (5) r The relative frequency of the reflected laser can be obtained through conversion, relative speed navigation information can be provided for the impact detector, and the navigation precision of the impact detection task of the impact detector is further improved;
the further preferable scheme is as follows: regarding the second measurement mode, the laser sensor (7) can perform image matching navigation through the set pattern (4) on the surface of the asteroid (5), so that the navigation precision of the impact detection task of the impact device is further improved;
the further preferable scheme is as follows: regarding the measurement mode III, according to the time difference delta t between the laser reflected back to the auxiliary laser indication beacon and the emitted laser, the relative distance r=0.5cdelta t between the asteroid surrounding device (1) and the asteroid (5) can be obtained, so that distance navigation information is provided for the asteroid surrounding device (1), and the navigation precision of the impact detection task of the impact device is further improved;
when the system is used for firearms collision detection, in the firearms collision detection embodiment, the target star surrounding device (1) is the firearms surrounding device (1), and the auxiliary laser indication beacon (2) can be arranged on the firearms surrounding device (1) or on the surface of a firearm; other requirements are similar to those of the system for asteroid impact detection.
In the invention, fig. 1 is an auxiliary laser indication beacon and an autonomous navigation measurement system for deep space impact detection, as shown in fig. 1, when the auxiliary laser indication beacon is used for asteroid impact detection, the auxiliary laser indication beacon 2 is a laser emitter which can be arranged on an asteroid circulator 1, the laser emitter emits a plurality of laser beams 3, a specific image 4 is formed in a specific area on the surface of an asteroid 5, a feasible pattern is a five-pointed star 4, an impact detector 8 carries a laser sensor 7, and navigation information can be obtained through laser 6 reflected by the surface of the sensitive asteroid. The auxiliary laser beacon 2 has a distance measuring function besides the function of emitting laser light 3, can measure the relative distance between the asteroid circulator 1 and the celestial body 5 through laser light, and can provide a navigation function for the asteroid circulator. The impact detector 8 can acquire auxiliary navigation information through frequency conversion information of the sensitive emission laser 6 or the specific pattern 4, so that the navigation precision of the impact detector is improved. The invention relates to a system integrating laser indication and autonomous navigation.
The laser auxiliary indication beacon has the distance measurement function, provides autonomous navigation service for the target star circulator, is a system integrating laser indication and autonomous navigation, adopts a split structural design, and respectively places the laser emitter and the laser sensor on the target star circulator and the impact detector, so that the load quantity carried on the impact detector is reduced, the impact detector model is simplified, and the impact detection cost is reduced. The invention establishes an auxiliary laser indication beacon system, and the laser emitter emits laser in a specific area on the surface of the target star to provide new navigation measurement for the impact detector, so that the navigation precision of the impact detection task of the impact detector can be improved.
Claims (10)
1. An auxiliary laser pointer beacon and autonomous navigational measurement system for deep space impact detection, comprising: an auxiliary laser indication beacon (2), an impact detector (8) and a laser sensor (7);
the auxiliary laser indication beacon (2) emits laser to the surface of the target star (5); the laser emission power of the auxiliary laser indication beacon (2) is based on the distance between the target star surrounding device (1) and the target star (5), the reflectivity of the surface of the target star (5), the distance between the target star (5) and the impact detector (8) and the laserDetermining the minimum acceptable signal energy of the sensor (7); the laser sensor (7) is set to accept the signal of-50 dBW at minimum, the reflectivity of the target star (5) is set to 0.1, and the laser beam diffusion attenuation G ct |(dBW)＝-10lgπ(θL) 2 In the following
Is the divergence angle of laser, lambda is the wavelength of the laser source, D out For emitting laser diameters; λ=589nm, d out The laser sensor (7) receives laser gain G, wherein the distance between the laser emission point and the receiving point is =0.8cm rt |(dBW)＝10lgπ(D in /2) 2 In D in The diameter of the auxiliary laser indication beacon is 10cm, and the transmitting power of the auxiliary laser indication beacon is about 12.5W;
the impact detector (8) is provided with a laser sensor (7) for receiving laser signals reflected by the surface of the target star;
the system has the following measurement modes:
the first mode is that the impact detector (8) provides navigation information for the impact detector (8) through the relative frequency conversion of the laser reflected by the star surface of the sensitive target;
the second mode is that the auxiliary laser indication beacon (2) emits a plurality of lasers, a set shape pattern is formed on the surface of the target star, and image matching navigation information is provided for the impact detector (8);
in a third mode, the auxiliary laser indication beacon (2) has a distance measurement function and can provide distance measurement navigation information for the target star circulator.
2. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the first mode and the third mode are performed simultaneously, and the second mode is not performed.
3. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: mode two and mode three are performed simultaneously, and mode one is not performed.
4. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the first mode, the second mode and the third mode are performed simultaneously.
5. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the laser sensor carried by the impact detector acquires navigation measurement through sensitive asteroid reflected laser information.
6. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the auxiliary laser pointer beacon may be mounted on the target star surround.
7. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the auxiliary laser pointer beacon is a laser transmitter.
8. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the split type structure is adopted, so that the load quantity carried by the impact detector is reduced, and the design difficulty of the impact detector is simplified.
9. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: the laser transmitter can be arranged on the target star surrounding device to transmit laser to a specific position of the target star, and provide auxiliary navigation beacons for the impact detector.
10. An auxiliary laser pointer beacon and autonomous navigational surveying system for deep space impact detection according to claim 1, wherein: in a firefly impact mission scenario, an auxiliary laser pointer beacon may be mounted on the surface of a spark.
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