CN214669563U - Three-band monopulse receiving and transmitting system - Google Patents

Three-band monopulse receiving and transmitting system Download PDF

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CN214669563U
CN214669563U CN202120696170.3U CN202120696170U CN214669563U CN 214669563 U CN214669563 U CN 214669563U CN 202120696170 U CN202120696170 U CN 202120696170U CN 214669563 U CN214669563 U CN 214669563U
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祝明波
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Coastal Defense College Of Naval Aviation University Of Chinese Pla
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Coastal Defense College Of Naval Aviation University Of Chinese Pla
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Abstract

The utility model discloses a three-band monopulse receiving and transmitting system, which is used for receiving and transmitting radar, and relates to the technical field of radar measurement; the device comprises a numerical control frequency source, a frequency synthesizer, a microwave tr module, a microwave frequency conversion module and a dual-channel coherent broadband receiving module, wherein the numerical control frequency source comprises a logic control unit, a waveform generation unit, a convolution unit I and 1-3 switch units, and the numerical control frequency source is connected with two microwave tr modules and one microwave frequency conversion module; the utility model provides a shortcoming of traditional multiband integration, save the cost, reduce volume, weight and consumption.

Description

Three-band monopulse receiving and transmitting system
Technical Field
The utility model provides a three wave band monopulse receiving and dispatching systems for radar receiving and dispatching, the utility model relates to a radar measures technical field.
Background
Monopulse radars have been widely used as early as the 60 s. A large number of national troops such as America, England, France and Japan are equipped with single-pulse radars which are mainly used for target identification, precision tracking measurement of a target range, early warning and tracking of ballistic missiles, measurement of reentry ballistic missiles of the missiles, tracking of rockets and satellites, control of weapon firepower, gun position reconnaissance, terrain following, navigation, mapping and the like; mainly used for medium traffic control in civil use.
The radar wave band represents the range of electromagnetic wave frequency, and generally, the low-frequency wave band has good remote performance and is easy to obtain a high-power transmitter and an antenna with huge size; high frequency bands generally allow precise distance and location, but have a short range of action. In order to integrate multiple bands into one radar, the conventional method often integrates multiple almost complete transceiver systems into one radar system, which has a large amount of hardware redundancy and relatively high volume and cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: a three-band single-pulse transceiving system is provided, which solves the defects of the traditional multi-band integration, saves the cost, and reduces the volume, the weight and the power consumption.
The utility model adopts the technical scheme as follows: the utility model provides a three wave band monopulse receiving and dispatching systems, includes numerical control frequency source, frequency synthesizer, microwave tr module, microwave frequency conversion module and binary channels coherent broadband receiving module, its characterized in that: the numerical control frequency source comprises a logic control unit, a waveform generation unit, a convolution unit I and a 1-3 switch unit, and is connected with the two microwave tr modules and the microwave frequency conversion module;
the microwave tr module and the microwave frequency conversion module comprise a convolution unit II, a filtering amplification unit I, a power distribution unit II, a power amplification unit, a coupling unit, a detection unit, a transceiving switch unit, a low-noise amplification unit I, a low-noise amplification unit II, a filtering unit I, a filtering unit II, a convolution unit III, a convolution unit IV, a filtering amplification unit II and a filtering amplification unit III, wherein the convolution unit II is connected with the numerical control frequency source, the output end of the filtering amplification unit I is connected with the input end of the power distribution unit I, two output ends of the power distribution unit I are respectively connected with the power distribution unit II and the power amplification unit, the output end of the power amplification unit is connected with the input end of the coupling unit, and the two output ends of the coupling unit are respectively connected with the transceiving switch and the detection unit, the receiving and transmitting switch is connected with an input end of the first low-noise amplification unit, the first low-noise amplification unit and the second low-noise amplification unit respectively receive two groups of signals and are connected with two output ends of the power distribution unit through a subsequent correction switch, the two correction switches are respectively connected with the first filtering unit and the second filtering unit, and are respectively connected with the second filtering amplification unit and the third filtering amplification unit through the third convolution unit and the fourth convolution unit, and the two microwave tr modules and the one microwave frequency conversion module are connected with the dual-channel coherent broadband receiving module;
the dual-channel coherent broadband receiving module comprises a 3-1 switch unit, a filtering amplification unit, an orthogonal mediation unit and an orthogonal mediation unit, wherein the output ends of the 3-1 switch unit and the 3-1 switch unit are respectively connected with the input ends of the filtering amplification unit and the filtering amplification unit, and the output ends of the filtering amplification unit and the filtering amplification unit are respectively connected with the input ends of the orthogonal mediation unit and the orthogonal mediation unit.
The numerical control frequency source is connected with the two microwave tr modules and the microwave frequency conversion module through three output ends of the 1-3 switch unit, and the numerical control frequency source is switched to the connected modules through a switch; the frequency of the signal generated by the waveform generating unit is 500M, and the signal and the 2GHz signal are convoluted into a 1.5GHz signal through a convolution unit and are output to the microwave tr module or the microwave frequency conversion module;
the two microwave tr modules and the microwave frequency conversion module are respectively responsible for receiving and transmitting three different wave band signals of X, Ku and Ka;
two output ends of the two microwave tr modules and one microwave frequency conversion module are respectively connected with three input ends of the 3-1 switch unit and the 3-1 switch unit, and the two-channel coherent broadband receiving module is switched and connected through a switch;
the two microwave tr modules and the microwave frequency conversion module output sum beam intermediate frequency and difference beam intermediate frequency signals to the two-channel coherent broadband receiving module, the sum beam intermediate frequency and the difference beam intermediate frequency are equal, the difference beam intermediate frequency and the difference beam intermediate frequency are equal and are both 1.5 GHz;
the dual-channel coherent broadband receiving module is provided with two groups of same signal processing submodules, and is used for simultaneously processing the sum beam intermediate frequency and the difference beam intermediate frequency and outputting intermediate frequency detection-sum, intermediate frequency detection-difference, I, Q detection-sum, I, Q detection-difference, sum beam and difference beam, and two groups of I, Q output; the frequency synthesizer generates 2 paths of signals, namely two paths of 200M signals, two paths of 100M signals and one path of 10M signal; the regulated power supply 32 supplies + DC 28V.
The utility model discloses a theory of operation does: after selecting wave band and wave form, generating corresponding intermediate frequency signal under the trigger of PRF, radiating the signal by antenna through up-conversion, transmitter and receiving-transmitting switch, then receiving target echo signal of sum-difference branch circuit (through receiving-transmitting switch), respectively carrying out low noise amplification and down-conversion at respective receiving front section, then respectively entering intermediate frequency amplification and quadrature demodulation shared by three wave bands, and outputting IQ baseband signal to data acquisition system.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses three wave band monopulse radar send-receive system have integrateed X, Ku and Ka three wave band, are switched by the user, use the best wave band to measure under different measuring environment to reach the expectation effect; in the three-band monopulse radar transceiving system, except a microwave module, the three bands of other modules are shared, so that a hardware part is shared to the maximum extent, and the effects of saving cost and reducing volume, weight and power consumption are achieved; the three-band monopulse radar transceiving system can be completely controlled by a computer, and comprises: the method has the advantages of switching the wave band, switching the working mode, configuring system parameters and the like, and is convenient for a user to operate.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic block diagram of a three-band monopulse radar transmitting/receiving system according to the present invention;
FIG. 2 is a block diagram of each part of the three-band monopulse radar transceiving system of the present invention;
FIG. 3 is a schematic diagram of an external interface of the three-band monopulse radar transceiving system of the present invention;
labeled as:
in fig. 1: 1. a numerical control frequency source; 2. a frequency synthesizer; 3. a microwave TR module; 4. a microwave frequency conversion module; 5. a dual-channel coherent broadband receiving module; 6. a logic control unit; 7. a waveform generating unit; 8. a convolution unit I; 9. 1-3 switching units; 10. a convolution unit II; 11. a first filtering and amplifying unit; 12. a power distribution unit; 13. a power distribution unit; 14. a power amplifying unit; 15. a coupling unit; 16. a detection unit; 17. a transmit-receive switch unit; 18. a first low-noise amplification unit; 19. a second low-noise amplifying unit; 20. a first filtering unit; 21. a second filtering unit; 22. a convolution unit III; 23. a convolution unit IV; 24. a second filtering and amplifying unit; 25. a third filtering and amplifying unit; 26. 3-1, a first switch unit; 27. 3-1, a second switch unit; 28. a fourth filtering and amplifying unit; 29. a fifth filtering and amplifying unit; 30. a first quadrature demodulation unit; 31. a second quadrature demodulation unit; 32. a regulated power supply.
In fig. 2: 33. a sampling clock; 34. a reference clock; 35. a frequency synthesizer; 36. other frequencies; 37. other frequencies; 38. other frequencies; 39. a PRF; 40. triggering (wave gate); 41. a waveform generator; 42. LFM intermediate frequency; 43. pulse intermediate frequency; 44. selecting a waveform and a wave band; 45. x intermediate frequency; 46. ku intermediate frequency; 47. ka intermediate frequency; 48. and I; 49. and Q; 50. a sum branch quadrature demodulator; 51. and a branch variable gain intermediate frequency amplifier; 52. x and an intermediate frequency; 53. ku and medium frequency; 54. ka and intermediate frequency; 55. a difference I; 56. a difference Q; 57. a difference branch quadrature demodulator; 58. a difference branch variable gain intermediate frequency amplifier; 59. x difference intermediate frequency; 60. ku difference intermediate frequency; 61. ka difference intermediate frequency; 62. x intermediate frequency; 63. an X up-converter; 64. an X transmitter; 65. a transmit-receive switch; 66. an X monopulse antenna; 67. x and branch receiving front ends; 68. an X difference branch receiving front end; 69. x and an intermediate frequency; 70. x difference intermediate frequency; 71. calibrating X; 72. an X echo; 73. a wave gate; 98. calibrating X; 74. ku intermediate frequency; 75. ku calibration; 76. a Ku echo; 77. a Ku up-converter; 78. a Ku transmitter; 79. a transmit-receive switch; 80. a wave gate; 81. a Ku monopulse antenna; 82. ku and tributary receive front ends; 83. a Ku difference branch receiving front end; 84. ku and medium frequency; 85. ku difference intermediate frequency; 99. ku calibration; 86. ka intermediate frequency; 87. a Ku up-converter; 88. ku calibration; 89. a Ku echo; 90. a Ka transmitter; 91. a transmit-receive switch; 92. a wave gate; 93. a Ka monopulse antenna; 94. ka and tributary receive front ends; 95. a Ka difference branch receiving front end; 96. ka and intermediate frequency; 97. ka difference intermediate frequency; 100. and (5) Ka calibration.
In fig. 3: 101. and I; 102. and Q; 103. a difference I; 104. a difference Q; 105. triggering (wave gate); 106. triggering (wave gate); 107. a sampling clock; 108. a sampling clock; 109. a reference clock; 110. a reference clock; 111. RS 232; 112. x and; 113. difference of X; 114. a Ku sum; 115. a Ku difference; 116. ka and; 117. a Ka difference; 118. a PRF; 119. signal echoes; 120. signal echoes; 121. 28 VDC; 122. an LED lamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, a three-band monopulse transceiver system includes a numerical control frequency source 1, a frequency synthesizer 2, a microwave tr module 3, a microwave frequency conversion module 4, and a dual-channel coherent broadband receiving module 5, and is characterized in that: the numerical control frequency source 1 comprises a logic control unit 6, a waveform generation unit 7, a convolution unit I8 and a 1-3 switch unit 9, and the numerical control frequency source 1 is connected with two microwave tr modules 3 and a microwave frequency conversion module 4;
the microwave tr module 3 and the microwave frequency conversion module 4 comprise a convolution unit II 10, a filtering amplification unit I11, a power distribution unit I12, a power distribution unit II 13, a power amplification unit 14, a coupling unit 15, a detection unit 16, a transceiving switch unit 17, a low-noise amplification unit I18, a low-noise amplification unit II 19, a filtering unit I20, a filtering unit II 21, a convolution unit III 22, a convolution unit IV 23, a filtering amplification unit II 24 and a filtering amplification unit III 25, wherein the convolution unit II 10 is connected with the numerical control frequency source 1, the output end of the filtering amplification unit I11 is connected with the input end of the power distribution unit I12, two output ends of the power distribution unit I12 are respectively connected with the power distribution unit II 13 and the power amplification unit 14, the output end of the power amplification unit 14 is connected with the input end of the coupling unit 15, two output ends of the coupling unit 15 are respectively connected with the transceiving switch 17 and the detection unit 16, the receiving and transmitting switch 17 is connected with the input end of a first low-noise amplification unit 18, the first low-noise amplification unit 18 and a second low-noise amplification unit 19 respectively receive two groups of signals and are connected with two output ends of the power distribution unit 13 through a subsequent correction switch, a first filtering unit 20 and a second filtering unit 21 are respectively connected behind the two correction switches, then a second filtering amplification unit 24 and a third filtering amplification unit 25 are respectively connected through a third convolution unit 22 and a fourth convolution unit 23, and two microwave tr modules 3 and one microwave frequency conversion module 4 are connected with the dual-channel coherent broadband receiving module 5;
the dual-channel coherent broadband receiving module 5 comprises a first 3-1 switch unit 26, a second 3-1 switch unit 27, a fourth filter amplification unit 28, a fifth filter amplification unit 29, a first quadrature modulation unit 30 and a second quadrature modulation unit 31, wherein output ends of the first 3-1 switch unit 26 and the second 3-1 switch unit 27 are respectively connected with input ends of the fourth filter amplification unit 28 and the fifth filter amplification unit 29, and output ends of the fourth filter amplification unit 28 and the fifth filter amplification unit 29 are respectively connected with input ends of the first quadrature modulation unit 30 and the second quadrature modulation unit 31.
The utility model discloses a theory of operation does: after selecting wave band and wave form, generating corresponding intermediate frequency signal under the trigger of PRF, radiating the signal by antenna through up-conversion, transmitter and receiving-transmitting switch, then receiving target echo signal of sum-difference branch circuit (through receiving-transmitting switch), respectively carrying out low noise amplification and down-conversion at respective receiving front section, then respectively entering intermediate frequency amplification and quadrature demodulation shared by three wave bands, and outputting IQ baseband signal to data acquisition system.
The numerical control frequency source 1 is connected with two microwave tr modules 3 and a microwave frequency conversion module 4 through three output ends of a 1-3 switch unit 9, and the numerical control frequency source 1 realizes flexible switching of connection with different modules through switching the connected modules.
The two microwave tr modules 3 and the microwave frequency conversion module 4 are respectively responsible for receiving and transmitting signals of three different wave bands of X, Ku and Ka, so that integration and receiving and transmitting of a plurality of wave bands are realized, and the volume and power consumption of the whole device system are reduced.
Two microwave tr modules 3 and one microwave frequency conversion module 4 are connected with two signal output ends and the dual-channel coherent broadband receiving module 5 through the 3-1 switch unit I26 and the 3-1 switch unit II 27, and the connected modules are switched through a switch, so that the operation is convenient, and the flexible connection and switching among the modules are realized.
The sum beam intermediate frequency and the difference beam intermediate frequency output by the two microwave tr modules 3 and the one microwave frequency conversion module 4 are equal, and the sum beam intermediate frequency and the difference beam intermediate frequency of each module are equal.
The dual-channel coherent broadband receiving module 5 is provided with two groups of same signal processing sub-modules, and is used for simultaneously processing and outputting the sum beam intermediate frequency and the difference beam intermediate frequency, so that the energy consumption is saved, and the processing efficiency is improved.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a three wave band monopulse receiving and dispatching systems, includes numerical control frequency source (1), frequency synthesizer (2), microwave tr module (3), microwave frequency conversion module (4) and binary channels coherent broadband receiving module (5), its characterized in that: the numerical control frequency source (1) comprises a logic control unit (6), a waveform generation unit (7), a convolution unit I (8) and a 1-3 switch unit (9), and the numerical control frequency source (1) is connected with two microwave tr modules (3) and one microwave frequency conversion module (4);
the microwave tr module (3) and the microwave frequency conversion module (4) comprise a convolution unit II (10), a filtering amplification unit I (11), a power distribution unit I (12), a power distribution unit II (13), a power amplification unit (14), a coupling unit (15), a detection unit (16), a transceiving switch unit (17), a low-noise amplification unit I (18), a low-noise amplification unit II (19), a filtering unit I (20), a filtering unit II (21), a convolution unit III (22), a convolution unit IV (23), a filtering amplification unit II (24) and a filtering amplification unit III (25), the convolution unit II (10) is connected with the numerical control frequency source (1), the output end of the filtering amplification unit I (11) is connected with the input end of the power distribution unit I (12), and two output ends of the power distribution unit I (12) are respectively connected with the power distribution unit II (13) and the power amplification unit (14) The output end of the power amplification unit (14) is connected with the input end of the coupling unit (15), two output ends of the coupling unit (15) are respectively connected with the transceiving switch unit (17) and the detection unit (16), the transceiving switch unit (17) is connected with the input end of the first low-noise amplification unit (18), the first low-noise amplification unit (18) and the second low-noise amplification unit (19) respectively receive two groups of signals and are connected with two output ends of the second power distribution unit (13) through the subsequent correction switches, the first filtering unit (20) and the second filtering unit (21) are respectively connected after the two correction switches, and then are respectively connected with the second filtering amplification unit (24) and the third filtering amplification unit (25) through the third convolution unit (22) and the fourth convolution unit (23), the two microwave tr modules (3) and the one microwave frequency conversion module (4) are connected with the two channels The parameter broadband receiving module (5) is connected;
the dual-channel coherent broadband receiving module (5) comprises a first 3-1 switch unit (26), a second 3-1 switch unit (27), a fourth filter amplification unit (28), a fifth filter amplification unit (29), a first quadrature modulation unit (30) and a second quadrature modulation unit (31), wherein the output ends of the first 3-1 switch unit (26) and the second 3-1 switch unit (27) are respectively connected with the input ends of the fourth filter amplification unit (28) and the fifth filter amplification unit (29), and the output ends of the fourth filter amplification unit (28) and the fifth filter amplification unit (29) are respectively connected with the input ends of the first quadrature modulation unit (30) and the second quadrature modulation unit (31).
2. A triple-band monopulse transceiver system according to claim 1, wherein said digitally controlled frequency source (1) is connected to two of said microwave tr modules (3) and one of said microwave frequency conversion modules (4) via three outputs of said 1-3 switching units (9), said digitally controlled frequency source (1) being switched between said connected modules via switches.
3. A triple-band monopulse transceiver system according to claim 1, wherein two of said microwave tr modules (3) and one of said microwave frequency conversion modules (4) are respectively responsible for transceiving signals in three different bands of X, Ku and Ka.
4. A triple-band monopulse transceiver system according to claim 1, wherein two of said microwave tr modules (3) and one of said microwave frequency conversion modules (4) are connected to said dual-channel coherent broadband reception module (5) via said 3-1 switch unit one (26) and 3-1 switch unit two (27) and switched by means of a switch.
5. A tri-band monopulse transceiver system according to claim 1, wherein the sum and difference beam intermediate frequencies output by both said microwave tr modules (3) and one said microwave frequency conversion module (4) are equal, and wherein the sum and difference beam intermediate frequencies of each module are equal.
6. A triple band monopulse transceiver system according to claim 1, wherein said two-channel coherent broadband receiving module (5) has two sets of identical signal processing sub-modules for processing and outputting both the sum and difference beam intermediate frequencies.
CN202120696170.3U 2021-04-06 2021-04-06 Three-band monopulse receiving and transmitting system Active CN214669563U (en)

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