CN114111450A - Guide head - Google Patents
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- CN114111450A CN114111450A CN202111658474.1A CN202111658474A CN114111450A CN 114111450 A CN114111450 A CN 114111450A CN 202111658474 A CN202111658474 A CN 202111658474A CN 114111450 A CN114111450 A CN 114111450A
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- Prior art keywords
- module
- receiving
- seeker
- accommodating cavity
- waveguide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G7/00—Direction control systems for self-propelled missiles
- F41G7/20—Direction control systems for self-propelled missiles based on continuous observation of target position
- F41G7/24—Beam riding guidance systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The disclosure relates to a seeker, and belongs to the technical field of guidance for designing and searching. The seeker includes: the height of a shell body included by the target front end is smaller than or equal to 81 mm, so that the power supply module, the crystal oscillator module, the frequency synthesis module, the receiving module, the transceiving module and the first waveguide module are respectively fixed in corresponding accommodating cavities, layered installation is realized, and miniaturization of the target front end is achieved. In addition, each module that the front end that seeks included installs respectively in the holding intracavity that corresponds, so realized the compression to the shared space of each module, saved the space in the casing, improved the effective utilization of casing space. The miniaturization of the seeker is realized while the miniaturization of the seeking front end is realized, so that the influence of the seeker on the missile due to larger shape, larger inertia and the like in the missile flying process is reduced.
Description
Technical Field
The disclosure relates to the technical field of homing guidance, in particular to a seeker.
Background
The seeker is positioned at the foremost end of the missile and used for providing the missile with the position information of the target object when the missile strikes the target object. In order to improve the circle probability error of the missile and ensure that the missile accurately strikes a target object, the seeker needs to more accurately determine the position information of the target object and avoid the influence caused by the seeker in the missile flying process.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to provide a guidance head capable of realizing miniaturization of the guidance head.
According to an aspect of the present disclosure, there is provided a seeker comprising:
the searching front end comprises a shell, a power supply module, a crystal oscillator module, a frequency synthesis module, a receiving module, a transmitting-receiving module and a first waveguide module;
the height of the shell is less than or equal to 81 mm, the inner cavity of the shell is sequentially divided into a first accommodating cavity, a second accommodating cavity, a third accommodating cavity and a fourth accommodating cavity along the height direction, the power module and the crystal oscillator module are fixed in the first accommodating cavity, the frequency synthesizer module is fixed in the second accommodating cavity, the receiving module is fixed in the third accommodating cavity, and the transceiving module and the first waveguide module are fixed in the fourth accommodating cavity;
the crystal oscillator module is electrically connected with the frequency synthesizer module, the frequency synthesizer module is electrically connected with the transceiver module and the receiving module, the transceiver module is electrically connected with the receiving module and the first waveguide module, and the power supply module is electrically connected with the crystal oscillator module, the frequency synthesizer module, the transceiver module and the receiving module respectively;
the antenna device is fixed at one end, close to the fourth accommodating cavity, of the shell and is provided with a second waveguide module, and the second waveguide module and the first waveguide module can be directionally coupled;
and the signal processing board is fixed at one end of the shell, which is close to the first accommodating cavity, and is electrically connected with the crystal oscillator module and the receiving module.
The seeker of any of the present disclosure, said seeker front end further comprising a differential receiving module;
the differential receiving module is fixed in the fourth accommodating cavity and is connected in series between the transceiver module and the receiving module.
According to any one of the guidance heads disclosed by the disclosure, the fourth accommodating cavity is sequentially divided into a first sub-accommodating cavity and a second sub-accommodating cavity in the direction away from the third accommodating cavity;
the differential receiving module is fixed in the first sub-accommodating cavity, and the receiving and transmitting module and the first waveguide module are fixed in the second sub-accommodating cavity.
According to any one of the guidance heads disclosed by the disclosure, the fourth accommodating cavity is sequentially divided into a first sub-accommodating cavity and a second sub-accommodating cavity in the direction away from the third accommodating cavity, and the differential receiving module is fixed in the first sub-accommodating cavity;
the searching front end comprises a plurality of first waveguide modules and two transceiver modules, the first waveguide modules are fixed in the second sub-accommodating cavity, a first transceiver module of the two transceiver modules is fixed in the first sub-accommodating cavity and is electrically connected with at least one of the first waveguide modules, and a second transceiver module of the two transceiver modules is fixed in the second sub-accommodating cavity and is electrically connected with the rest first waveguide modules of the first waveguide modules;
the differential receiving modules are connected in series between the first transceiver module and the receiving module and between the second transceiver module and the receiving module.
According to the seeker disclosed by the invention, the side wall of the shell is provided with a through hole communicated with each accommodating cavity, and the coaxial cable penetrates through the through hole to be electrically connected with the modules in the corresponding accommodating cavities.
The seeker of any of the present disclosure, said housing comprising a body and at least three glass-beaded baffles;
the body is the open-ended tubular structure in both ends, and at least three glass bead seals the baffle and follows direction of height distributes, and all with body fixed connection.
According to any one of the seeker disclosed by the invention, the body is of a circular truncated cone-shaped cylindrical structure;
the outer diameter of the small-diameter end of the body is greater than or equal to 54 mm and less than or equal to 56 mm, the outer diameter of the large-diameter end of the body is greater than or equal to 79 mm or less than or equal to 81 mm, the first accommodating cavity is close to the large-diameter end of the body, and the fourth accommodating cavity is close to the small-diameter end of the body.
The seeker according to any of the present disclosure, the seeker front end further comprising a control switch;
the control switch is fixed in the first accommodating cavity and electrically connected with the power supply module, and the control switch can control the power supply module and the receiving module to be switched on or off.
According to the seeker disclosed by the invention, the seeker front end further comprises a heat-conducting plate;
the heat-conducting plates are connected among the power supply module, the crystal oscillator module, the frequency synthesis module, the transceiver module, the receiving module and the shell.
The seeker according to any one of the present disclosure further comprising a heat sink fixed to a side of the signal processing board facing away from the seeker's front end and in contact with the housing.
According to another aspect of the present disclosure, there is provided a missile comprising:
the missile comprises a missile body and the guide head on the one hand, wherein the guide head is fixed at the front end of the missile body.
In the embodiment of the disclosure, the shell with the height less than 81 mm is designed in a layered manner, and the modules included in the target front end are fixed in the accommodating cavities of the corresponding layers, so that the miniaturization of the target front end is realized. The miniaturization of the seeker is realized while the miniaturization of the seeker front end is realized, so that the guidance error of the seeker caused by a larger body, larger inertia and the like is reduced, and the guidance precision of the seeker is improved. In addition, each module that the front end that seeks included installs respectively in the holding intracavity that corresponds, so realized the compression to the shared space of each module, saved the space in the casing, improved the effective utilization of casing space.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic front view of a guidance head according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a search front end according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram illustrating electrical connections between modules in a front end according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of another search front end provided in the embodiment of the present disclosure.
Fig. 5 is a schematic diagram of electrical connections between modules in another front end according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of another guidance head provided in the embodiments of the present disclosure.
Fig. 7 is a schematic temperature rise diagram of a seeker provided in an embodiment of the present disclosure.
Reference numerals:
1. a front end of the target; 2. an antenna device; 3. a signal processing board; 4. a heat sink;
11. a housing; 12. a power supply module; 13. a crystal oscillator module; 14. a frequency synthesizer module; 15. a receiving module; 16. a transceiver module; 17. a first waveguide module; 18. a difference receiving module; 19. a control switch;
111. a first accommodating cavity; 112. a second accommodating cavity; 113. a third accommodating cavity; 114. a fourth accommodating cavity; 115. a body; 116. sealing the partition plate;
1141. a first sub-accommodation cavity; 1142. a second sub-accommodation cavity;
161. a first transceiver module; 162. and a second transceiver module.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as 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 concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.
Fig. 1 illustrates a schematic structural diagram of a seeker provided in an embodiment of the present disclosure, fig. 2 illustrates a schematic structural diagram of a seeker front end 1 provided in an embodiment of the present disclosure, and fig. 3 illustrates a schematic electrical connection diagram between modules of a seeker front end provided in an embodiment of the present disclosure. The seeker disclosed by the embodiment of the disclosure can be applied to ammunition platforms such as small-caliber cartridge loaders and airborne ammunition platforms.
As shown in fig. 1, the seeker includes: the target front end 1, the antenna device 2 and the signal processing board 3, as shown in fig. 2, the target front end 1 includes a housing 11, a power module 12, a crystal oscillator module 13, a frequency synthesizer module 14, a receiving module 15, a transceiver module 16 and a first waveguide module 17.
The height of the housing 11 is greater than or equal to 79 mm or less than or equal to 81 mm, as shown in fig. 2, the inner cavity of the housing 11 is sequentially divided into a first accommodating cavity 111, a second accommodating cavity 112, a third accommodating cavity 113 and a fourth accommodating cavity 114 along the height direction, the power module 12 and the crystal oscillator module 13 are fixed in the first accommodating cavity 111, the frequency synthesizer module 14 is fixed in the second accommodating cavity 112, the receiving module 15 is fixed in the third accommodating cavity 113, and the transceiver module 16 and the first waveguide module 17 are fixed in the fourth accommodating cavity 114. The antenna device 2 is fixed at one end of the housing 11 close to the fourth accommodating cavity 114, and the antenna device 2 has a second waveguide module which can be directionally coupled with the first waveguide module 17; the signal processing board 3 is fixed to an end of the housing 11 near the first accommodation chamber 111.
As shown in fig. 3, the crystal oscillator module 13 is electrically connected to the frequency synthesizer module 14, the frequency synthesizer module 14 is electrically connected to the transceiver module 16 and the receiving module 15, the transceiver module 16 is electrically connected to the receiving module 15 and the first waveguide module 17, the power module 12 is electrically connected to the crystal oscillator module 13, the frequency synthesizer module 14, the transceiver module 16 and the receiving module 15, respectively, and the signal processing board 3 is electrically connected to the crystal oscillator module 13 and the receiving module 15.
In the embodiment of the present disclosure, the shell 11 with a height smaller than 81 mm is designed in a layered manner, and the modules included in the target front end 1 are fixed in the accommodating cavities of the corresponding layers, so that the target front end 1 is miniaturized. The miniaturization of the seeker is realized while the miniaturization of the seeker front end 1 is realized, so that the guidance error of the seeker caused by a larger body, larger inertia and the like is reduced, and the guidance precision of the seeker is improved. In addition, each module that seek front end 1 includes is installed respectively in corresponding holding intracavity, has so realized the compression to the space that each module occupy, has saved the space in the casing 11, has improved the effective utilization of the space in the casing 11.
The standard height of the housing 11 can be designed to be 80 mm, and the height of the housing 11 is within a range of 79-81 mm in combination with the processing error of the housing 11. The height direction of the housing 11 refers to a direction from the antenna device 2 to the signal processing board 3. The housing 11 has a truncated cone-shaped structure or a structure having another shape. Taking the truncated cone-shaped structure as an example, the antenna device 2 is fixed to the small-diameter end (the end close to the fourth accommodating chamber 114) of the housing 11, and the signal processing board 3 is fixed to the large-diameter end (the end close to the first accommodating chamber 111) of the housing 11.
In the actual working process, the seeker has a first working state and a second working state, wherein the first working state is a signal transmitting state, and the second working state is a signal receiving state.
In the working process of the seeker (including a first working state and a second working state), the crystal oscillator module 13 is used for generating a clock signal and transmitting the clock signal to the frequency synthesizer module 14, when the seeker is in the first working state, the transceiver module 16 works in a transmitting state, at this time, the frequency synthesizer module 14 generates a detection signal based on the clock signal and transmits the detection signal to the transceiver module 16, the transceiver module 16 transmits the received detection signal to the first waveguide module 17, and after the first waveguide module 17 is directionally coupled with the second waveguide module, the detection signal is transmitted outwards through the antenna device 2; when the seeker is in the second working state, the transceiver module 16 works in the receiving state, the frequency synthesizer module 14 generates a local oscillation signal based on the clock signal and transmits the local oscillation signal to the receiving module 15, in addition, the positioning signal received by the antenna device 2 is transmitted to the transceiver module 16 through the first waveguide module 17 after the second waveguide module is directionally coupled with the first waveguide module 17, the positioning signal processed by the transceiver module 16 is transmitted to the receiving module 15, at this time, the receiving module 15 transmits the received local oscillation signal and the processed positioning signal to the signal processing board 3 together, so that the signal processing board 3 performs calculation according to the local oscillation signal and the processed positioning signal, and the position information corresponding to the positioning signal is determined.
The detection signal is a signal which is emitted by the seeker and used for determining the position information of the target beating object, and the positioning signal is a signal obtained by reflecting the detection signal by the target beating object. The locating signal may be an RF signal and the processed locating signal may be an IF signal. The operating band of the antenna device 2 when transmitting the probe signal or receiving the positioning signal is 8 mm.
In conjunction with the above-mentioned operating principle of the seeker, when the seeker is in the first operating state, the receiving module 15 does not need to operate, and in order to save power consumption, as shown in fig. 3, the seeker 1 further includes a control switch 19. The control switch 19 is fixed in the first accommodating cavity 111 and electrically connected to the power module 12, and the control switch 19 can control the power module 12 to be connected or disconnected with the receiving module 15. Thus, when the seeker is in the first working state, the power supply module 12 is controlled to be disconnected from the receiving module 15 through the control switch 19, so that energy consumption is reduced; when the seeker is in the second working state, the power supply module 12 and the receiving module 15 are controlled to be conducted through the control switch 19, and normal receiving of the positioning signals is guaranteed.
In some embodiments, the antenna device 2 needs to be fixed at the first end of the housing 11 (the end close to the fourth receiving cavity 114), in order to avoid increasing the space occupied by the guiding head after the antenna device 2 is fixedly connected to the housing 11, the antenna device is a flat plate-shaped structure, and the outer contour of the antenna device 2 matches the outer contour of the first end of the housing 11.
In combination with the above-mentioned housing 11 having a circular truncated cone-shaped structure, the antenna device 2 is a circular flat antenna, and the outer diameter of the antenna device 2 is equal to the outer diameter of the first end (small diameter end) of the housing 11. Illustratively, the outer diameter of the small-diameter end of the housing 11 is 55 mm, and the outer diameter of the antenna device 2 is easily 55 mm.
For a flat-panel antenna, the antenna device 2 is exemplarily a flat-panel slot antenna, and of course, the antenna device 2 may also be other types of flat-panel antennas, which is not limited in this disclosure. The antenna assembly 2 may be secured to the first end of the housing 11 using 3M 2.5 set screws, and the thickness of the antenna assembly 2 is less than or equal to 10.5 mm, and the thickness of the antenna assembly 2 is 10 mm. While the weight of the antenna device 2 can be reduced while reducing the volume of the antenna device 2 to reduce the inertia of the seeker. Illustratively, the antenna device 2 weighs 38 grams.
In some embodiments, the signal processing board 3 may adopt an FPGA + single-core DSP chip with low power consumption, and certainly, other chips may also be adopted as long as the local oscillator signal and the processed positioning signal can be processed, and the position signal of the target impact object is determined, which is not limited in this disclosure. Wherein the thickness of the signal processing board 3 may be less than or equal to 10 mm.
The signal processing board 3 is fixed at the second end (the end close to the first accommodating cavity 111) of the housing 11, and in combination with the housing 11 with the circular truncated cone-shaped structure, the signal processing board 3 is of a circular structure, and the outer diameter of the signal processing board 3 is equal to the outer diameter of the second end (the large-diameter end) of the housing 11. Illustratively, the outer diameter of the large-diameter end of the housing 11 is 80 mm, and the outer diameter of the signal processing board 3 is easily 80 mm.
In combination with the height of the housing 11, the thickness of the antenna device 2, and the thickness of the signal processing board 3, as described above, the overall height of the leader is less than or equal to 100 mm, thereby further ensuring miniaturization of the leader. Illustratively, the height of the housing 11 is 80 mm, the thickness of the antenna device 2 is 10 mm, and the thickness of the signal processing board 3 is 10 mm.
In the embodiment of the present disclosure, the number of the first waveguide modules 17 may be one, two, three, four, and the like, the number of the second waveguide modules is equal to the number of the first waveguide modules 17, and the first waveguide modules 17 and the corresponding second waveguide modules can be directionally coupled.
The first waveguide module 17 has a first waveguide port, the second waveguide module has a second waveguide port, and the first waveguide port of the first waveguide module 17 and the second waveguide port of the corresponding second waveguide module have an overlapping region in the height direction, or the first waveguide port of the first waveguide module 17 and the second waveguide port of the corresponding second waveguide module completely overlap in the height direction.
When the number of the first waveguide modules 17 is plural, the plural first waveguide modules 17 are simultaneously in the first operating state of the seeker or simultaneously in the second operating state of the seeker. Of course, some of the first waveguide modules 17 may be in the first operating state of the guide head, and the rest may be in the second operating state of the guide head.
In addition, in the case of multiple first waveguide modules 17, multiple paths of signals corresponding to the multiple first waveguide modules 17 one to one exist in the second working state of the seeker and need to be transmitted, so that multiple signal transmission channels corresponding to the multiple first waveguide modules 17 one to one are formed between the transceiver module 16 and the receiving module 15 and between the receiving module 15 and the signal processing board 3.
Illustratively, the destination module has three first waveguide modules 17, and three transmission channels for transmitting signals are formed between the transceiver module 16 and the receiving module 15, and three transmission channels for transmitting signals are formed between the receiving module 15 and the signal processing board 3.
In the embodiment of the present disclosure, the desired front end 1 is a millimeter wave front end, an infrared front end, or the like. Specific circuits of the crystal oscillator module 13, the frequency synthesizer module 14, the receiving module 15, and the transceiver module 16 included in the front end 1 can refer to related technologies, which is not limited in the embodiments of the present disclosure. Two modules which need to be electrically connected are oppositely plugged and connected by adopting a subminiature sintered SMP type connector, so that the stability of the electrical connection between the two modules is ensured, and the generation of electromagnetic interference is avoided.
One of one end of the connector and the corresponding module is a pin connector, and the other end of the connector is a jack connector; or one of the one end of the connector and the corresponding module is a plug connector, and the other end of the connector is a socket connector.
Illustratively, the crystal oscillator module 13 includes a frequency amplifying circuit, a vibration-damping crystal oscillator, a 100MHz amplifying power dividing circuit, and a frequency synthesizing circuit (DDS); the frequency synthesizer module 14 includes an oscillator (VCO), a local oscillator signal generating circuit, and a detection signal generating circuit; the transceiver module 16 includes a frequency amplifying circuit of a transmitting channel and a primary frequency conversion circuit of a receiving channel.
It should be noted that, for the circuits included in each module, when the seeker is in the first working state, a part of the circuits of each module do not need to work as the receiving module 15, and at this time, the power supply module 12 may be controlled to be disconnected from the part of the circuits by the control switch 19, so as to reduce power consumption. Illustratively, the power module 12 is controlled to be disconnected from the primary frequency conversion circuit of the receiving channel by the control switch 19. When the seeker is in the second working state, another part of the circuits of the modules do not need to work, and at the moment, the power supply module 12 can be controlled to be disconnected from the other part of the circuits through the control switch 19, so that energy consumption is reduced. Illustratively, the power module 12 is controlled to be disconnected from the oscillator by controlling the switch 19.
In some embodiments of the present disclosure, as shown in fig. 4, the front end 1 further includes a differential receiving module 18, the differential receiving module 18 is fixed in the fourth accommodating cavity 114, and the differential receiving module 18 is connected in series between the transceiver module 16 and the receiving module 15.
In an actual implementation process, when the seeker is in the second working state, the transceiver module 16 performs primary frequency conversion processing on the received positioning signal, transmits the positioning signal after the primary frequency conversion processing to the differential receiving module 18, and the differential receiving module 18 performs secondary frequency conversion processing on the positioning signal after the primary frequency conversion processing to obtain an intermediate frequency positioning signal, and transmits the intermediate frequency positioning signal obtained by the processing to the receiving module 15.
Therefore, the positioning signal after the primary frequency conversion processing is continuously processed in a frequency conversion mode through the differential receiving module 18, so that the subsequent signal processing board 3 can conveniently process the positioning signal, and the accuracy of the position information determined by the subsequent signal processing board 3 is ensured.
It should be noted that, when the seeker is in the first working state, the differential receiving module 18 does not need to work, and at this time, in order to save energy consumption, the power supply module 12 and the differential receiving module 18 may be controlled to be turned on or off by the control switch 19. Thus, when the seeker is in the first working state, the power supply module 12 is controlled to be disconnected from the differential receiving module 18 through the control switch 19, so that energy consumption is reduced; when the seeker is in the second working state, the power supply module 12 and the differential receiving module 18 are controlled to be conducted through the control switch 19, and normal processing of the positioning signals is guaranteed.
In some embodiments, the fourth receiving cavity 114 is sequentially divided into a first sub-receiving cavity 1141 and a second sub-receiving cavity 1142 in a direction away from the third receiving cavity 113, the differential receiving module 18 is fixed in the first sub-receiving cavity 1141, and the transceiver module 16 and the first waveguide module 17 are fixed in the second sub-receiving cavity 1142. Thus, the first sub-receiving cavity 1141 and the second sub-receiving cavity 1142 realize the layered arrangement of the differential receiving module 18 and the receiving/transmitting module 16, and avoid the interference formed during the arrangement on the same layer.
In other embodiments, the seeking front end 1 includes a plurality of first waveguide modules 17, and a plurality of transmission channels for positioning signals are required between the first waveguide modules 17 and the transceiver module 16, and it may be difficult to form the plurality of transmission channels due to space limitation in the accommodating cavities of the same layer. Thus, as shown in fig. 4, the fourth receiving cavity 114 is sequentially divided into a first sub-receiving cavity 1141 and a second sub-receiving cavity 1142 in a direction away from the third receiving cavity 113, the differential receiving module 18 is fixed in the first sub-receiving cavity 1141, and the plurality of first waveguide modules 17 are fixed in the second sub-receiving cavity 1142; the target front end 1 includes two transceiver modules 16, a first transceiver module 161 of the two transceiver modules 16 is fixed in the first sub-receiving cavity 1141 and electrically connected to at least one of the first waveguide modules 17, and a second transceiver module 162 of the two transceiver modules 16 is fixed in the second sub-receiving cavity 1142 and electrically connected to the remaining first waveguide modules 17 of the first waveguide modules 17.
Thus, through the layered arrangement of the two transceiver modules 16, a plurality of transmission channels for transmitting the positioning signals corresponding to the plurality of first waveguide modules 17 can be arranged in the two-layer accommodating cavities, thereby ensuring the formation of the plurality of transmission channels.
In conjunction with the above discussion, in the case that the seeking front end 1 further includes the differential receiving module 18, as shown in fig. 5, the differential receiving module 18 is connected in series between the first transceiver module 161 and the receiving module 15, and between the second transceiver module 162 and the receiving module 15.
When the number of the first waveguide modules 17 connected to the first transceiver module 161 is a, a transmission channels for transmitting signals are provided between the first transceiver module 161 and the corresponding differential transceiver module 16, and a transmission channels for transmitting signals are provided between the differential transceiver module 18 and the receiving module 15; when the number of the first waveguide modules 17 connected to the first transceiver module 161 is B, B transmission channels for transmitting signals are provided between the first transceiver module 161 and the corresponding differential transceiver module 16, and B transmission channels for transmitting signals are provided between the differential transceiver module 18 and the receiving module 15.
In some embodiments of the present disclosure, the side wall of the housing 11 has a through hole communicating with each accommodating cavity, and the coaxial cable passes through the through hole to be electrically connected with the module in the corresponding accommodating cavity. So, through the through-hole of intercommunication holding chamber, be convenient for set up the connecting wire and realize corresponding the electric connection between two modules.
Of course, in the embodiment of the present disclosure, in addition to providing the through hole on the side wall of the housing 11, a through hole may also be provided on the partition board 116 of two adjacent accommodating cavities, which is not limited in the embodiment of the present disclosure.
In some embodiments, as shown in fig. 2, the housing 11 includes a body 115 and at least three sealing plates 116, the body 115 is a cylindrical structure with two open ends, and the at least three sealing plates 116 are distributed along the height direction and are all fixedly connected to the body 115. Thus, the inner cavity of the body 115 is divided into at least four accommodating cavities by at least three sealing plates 116.
In combination with the above, the housing 11 includes four partition boards 116, and the four partition boards 116 divide the inner cavity of the main body 115 into the first accommodating cavity 111, the second accommodating cavity 112, the third accommodating cavity 113, the first sub-accommodating cavity 1141, and the second sub-accommodating cavity 1142.
The isolation plate 116 is used to isolate electromagnetic interference between modules in two adjacent receiving cavities. Illustratively, the packer plate 116 is a glass bead packer plate. The sealing plate 116 is fixedly connected with the body 115 by 4M 2.5 fixing screws.
In some embodiments, in combination with the housing 11 with the above-mentioned circular truncated cone-shaped structure, the body 115 is a circular truncated cone-shaped structure, an outer diameter of a small diameter end of the body 115 is greater than or equal to 54 mm and less than or equal to 56 mm, an outer diameter of a large diameter end of the body 115 is greater than or equal to 79 mm or less than or equal to 81 mm, the first accommodating cavity 111 is close to the large diameter end of the body 115, and the fourth accommodating cavity 114 is close to the small diameter end of the body 115. Therefore, through the design of the circular truncated cone-shaped structure, when the guided missile drives the guide head to fly and rotate, the resistance received by the guide head is minimum.
In the embodiment of the disclosure, heat is inevitably generated in the working process of the seeker, so that the temperature rise speed of the seeker is high. In a high temperature state, the accuracy of the operation of the seeker is low, and therefore the accuracy of the position information determination is easily affected.
On the one hand, in order to accelerate the heat dissipation effect of the seeker, the casing 11 of the seeker 1 can be made of copper material, and of course, other materials with high heat conduction efficiency can also be used. Thus, the heat dissipation efficiency of the housing 11 can be increased.
On the other hand, in order to avoid that the temperature of each module included in the desired front end 1 is high in a short time, a material having a large heat fusion may be selected for a module generating a large amount of heat. Therefore, the temperature rise speed of each module can be reduced.
On the other hand, due to the layered arrangement of the modules, the circuits included in each module, especially the high-power circuits, can be distributed to avoid the situation that the local temperature of each circuit is too high in a short time. For some circuits (the FPGA circuit included in the signal processing board 3 and the frequency synthesizing circuit included in the crystal oscillator module 13), a heat sink type design may also be adopted to further ensure that the local temperature of each circuit is too high in a short time.
In another aspect, the front end 1 may further include a heat conducting plate, and the heat conducting plate is connected between the power module 12, the crystal oscillator module 13, the frequency synthesizer module 14, the transceiver module 16, the receiving module 15 and the casing 11. Thus, through the arrangement of the heat conducting plate, the heat transfer between each module and the shell 11 is accelerated, and the condition that the temperature of each module is overhigh in a short time is avoided.
On the other hand, as shown in fig. 6, the seeker further comprises a heat sink 4, and the heat sink 4 is fixed on the side of the signal processing board 3 facing away from the seeker's front end 1 and is in contact with the housing 11. Thus, the heat transfer between the casing 11 and the radiator 4 is ensured by the contact between the radiator 4 and the casing 11, and further, under the action of the radiator 4, the heat dissipation efficiency of the casing 11 is further improved, and the condition that the temperature of the seeker is too high in a short time is avoided.
It should be noted that, with regard to the design of the guidance head, it is possible to avoid the situation where the guidance head is too hot in a short time by at least one of the aspects described above. In order to ensure the practicability of the seeker, the longer the short time length is, the better the short time length is. By way of example, in combination with the heat dissipation measures described in the above aspects, the temperature change of the seeker within 30 minutes is shown in fig. 7, so that the situation that the temperature of the seeker is too high (the temperature of the circuit in the rear part is 55.2 degrees centigrade and the temperature rise is only 30.2 degrees centigrade) can be avoided.
In the disclosed embodiment, a missile is also provided. The missile comprises a missile body and the guide head on the one hand, wherein the guide head is fixed at the front end of the missile body.
In the embodiment of the disclosure, the miniaturization of the seeker is realized through the embodiment, so that in the process of missile flight, the influence on the missile flight precision due to the larger volume of the seeker is avoided, and the accuracy of the missile in hitting the target hitting object is improved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A seeker, comprising:
the searching front end comprises a shell, a power supply module, a crystal oscillator module, a frequency synthesis module, a receiving module, a transmitting-receiving module and a first waveguide module;
the height of the shell is less than or equal to 81 mm, the inner cavity of the shell is sequentially divided into a first accommodating cavity, a second accommodating cavity, a third accommodating cavity and a fourth accommodating cavity along the height direction, the power module and the crystal oscillator module are fixed in the first accommodating cavity, the frequency synthesizer module is fixed in the second accommodating cavity, the receiving module is fixed in the third accommodating cavity, and the transceiving module and the first waveguide module are fixed in the fourth accommodating cavity;
the crystal oscillator module is electrically connected with the frequency synthesizer module, the frequency synthesizer module is electrically connected with the transceiver module and the receiving module, the transceiver module is electrically connected with the receiving module and the first waveguide module, and the power supply module is electrically connected with the crystal oscillator module, the frequency synthesizer module, the transceiver module and the receiving module respectively;
the antenna device is fixed at one end, close to the fourth accommodating cavity, of the shell and is provided with a second waveguide module, and the second waveguide module and the first waveguide module can be directionally coupled;
and the signal processing board is fixed at one end of the shell, which is close to the first accommodating cavity, and is electrically connected with the crystal oscillator module and the receiving module.
2. The seeker of claim 1, wherein said seeker head further comprises a differential receiving module;
the differential receiving module is fixed in the fourth accommodating cavity and is connected in series between the transceiver module and the receiving module.
3. The seeker of claim 2, wherein the fourth receiving cavity is sequentially divided into a first sub-receiving cavity and a second sub-receiving cavity in a direction away from the third receiving cavity;
the differential receiving module is fixed in the first sub-accommodating cavity, and the receiving and transmitting module and the first waveguide module are fixed in the second sub-accommodating cavity.
4. The seeker of claim 2, wherein the fourth receiving cavity is sequentially divided into a first sub-receiving cavity and a second sub-receiving cavity in a direction away from the third receiving cavity, and the differential receiving module is fixed in the first sub-receiving cavity;
the searching front end comprises a plurality of first waveguide modules and two transceiver modules, the first waveguide modules are fixed in the second sub-accommodating cavity, a first transceiver module of the two transceiver modules is fixed in the first sub-accommodating cavity and is electrically connected with at least one of the first waveguide modules, and a second transceiver module of the two transceiver modules is fixed in the second sub-accommodating cavity and is electrically connected with the rest first waveguide modules of the first waveguide modules;
the differential receiving modules are connected in series between the first transceiver module and the receiving module and between the second transceiver module and the receiving module.
5. The seeker of claim 1, wherein the side walls of said housing have through holes communicating with each of said receiving cavities, through which coaxial cables are passed to electrically connect with the modules in the respective receiving cavities.
6. The seeker of claim 1 or 5, wherein said housing comprises a body and at least three glass-beaded baffles;
the body is the open-ended tubular structure in both ends, and at least three glass bead seals the baffle and follows direction of height distributes, and all with body fixed connection.
7. The seeker of claim 6, wherein said body is a frustoconical barrel;
the outer diameter of the small-diameter end of the body is greater than or equal to 54 mm and less than or equal to 56 mm, the outer diameter of the large-diameter end of the body is greater than or equal to 79 mm or less than or equal to 81 mm, the first accommodating cavity is close to the large-diameter end of the body, and the fourth accommodating cavity is close to the small-diameter end of the body.
8. The seeker of claim 1, wherein said seeker head further comprises a control switch;
the control switch is fixed in the first accommodating cavity and electrically connected with the power supply module, and the control switch can control the power supply module and the receiving module to be switched on or off.
9. The seeker of claim 1, wherein said seeker head further comprises a thermally conductive plate;
the heat-conducting plates are connected among the power supply module, the crystal oscillator module, the frequency synthesis module, the transceiver module, the receiving module and the shell.
10. The seeker of any of claims 1-9 further comprising a heat sink secured to a side of said signal processing board facing away from said seeker's front end and in contact with said housing.
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| CN202111658474.1A CN114111450B (en) | 2021-12-30 | 2021-12-30 | Seeker head |
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| CN202111658474.1A CN114111450B (en) | 2021-12-30 | 2021-12-30 | Seeker head |
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| JP2003254700A (en) * | 2002-03-01 | 2003-09-10 | Mitsubishi Heavy Ind Ltd | Composite seeker |
| US6806823B1 (en) * | 2003-10-20 | 2004-10-19 | The United States Of America As Represented By The Secretary Of The Army | Passive radar detector for dualizing missile seeker capability |
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| CN114111450B (en) | 2023-09-08 |
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