CN104101866A - Pulse modulating system of radar system - Google Patents

Pulse modulating system of radar system Download PDF

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Publication number
CN104101866A
CN104101866A CN201410380041.8A CN201410380041A CN104101866A CN 104101866 A CN104101866 A CN 104101866A CN 201410380041 A CN201410380041 A CN 201410380041A CN 104101866 A CN104101866 A CN 104101866A
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CN
China
Prior art keywords
pulse
described
signal
module
radar
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Application number
CN201410380041.8A
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Chinese (zh)
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CN104101866B (en
Inventor
管玉静
崔玉波
汪建岗
李�灿
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成都雷电微力科技有限公司
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Priority to CN201410380041.8A priority Critical patent/CN104101866B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28Details of pulse systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S2013/0236Special technical features
    • G01S2013/0245Radar with phased array antenna
    • G01S2013/0254Active array antenna

Abstract

The invention discloses a pulse modulating system of a radar system. The pulse modulating system of the radar system comprises a signal input/output port, a signal conversion circuit, a pulse generating module and a drive module, wherein the signal input/output port is used for receiving commands of a radar processor and feeding back data, the signal conversion circuit is used for converting command control level signals sent from the radar processor into 3.3 VTTL level signals needed for the pulse generating module and converting the 3.3 VTTL level signals fed back from the pulse generating module into level signals capable of being identified by the radar processor, the pulse generating module is used for sending pulse signals with variable amplitude, pulse width and frequency according to commands sent from the radar processor, and the drive module is used for driving an MOSFET module to output a high-voltage large-current pulse modulating voltage after amplifying the pulse signals. The pulse modulating system of the radar system is convenient to regulate the pulse modulation conduction time and the pulse repeating frequency of an active emitting circuit and an active receiving circuit of an active phased array radar according to the use needs.

Description

Modulating pulse system in a kind of radar system

Technical field

The present invention relates to Active Phased Array Radar technical field, particularly the modulating pulse system in a kind of Active Phased Array Radar system.

Background technology

Active Phased Array Radar technology is the new technology developing in recent years, has than the more advantage of traditional fire control radar.The pulsed modulation of radar system is mainly used on the active radiating circuit and active receiving circuit of Active Phased Array Radar, pulse modulation voltage is provided to respectively active radiating circuit and active receiving circuit, in practical application, the amplitude of pulse modulation voltage, pulsewidth and frequency need to change according to practical application, how not to provide the technical scheme that the modulating pulse voltage of amplitude, pulsewidth and changeable frequency is provided for the active radiating circuit in Active Phased Array Radar and active receiving circuit in prior art.

Summary of the invention

The object of the invention is to overcome existing above-mentioned deficiency in prior art, modulating pulse system in a kind of Active Phased Array Radar system is provided, it can provide large current-modulation pulse voltage that amplitude, pulsewidth and frequency can change to the active radiating circuit in Active Phased Array Radar and active receiving circuit, meets pulse voltage demands different in practical application.

In order to realize foregoing invention object, the technical solution used in the present invention is: the modulating pulse system in a kind of radar system, comprising:

Signal input/output interface, for completing radar processor command reception and data passback;

Signaling conversion circuit, be connected between described signal input/output interface and pulse generating module, convert the required 3.3V Transistor-Transistor Logic level signal of described pulse generating module to for the instruction control level signal that radar processor is issued, and convert the 3.3VTTL level signal of described pulse generating module output passback to level signal that radar processor can be identified;

Pulse generating module, sends the pulse signal of amplitude, pulsewidth and changeable frequency for the instruction issuing according to radar processor;

Driver module, amplifies rear drive MOSFET module output high pressure, heavy current pulse modulation voltage for described pulse signal being carried out to signal.

Described pulse generating module comprises fpga chip, this fpga chip comprises built-in with CPU module, logic controller and pulse signal generator, and this fpga chip is external parallel output unit, parallel input block, program storage, impulsive switched switch and pulse condition switch respectively; Described parallel output unit, parallel input block connect respectively described signaling conversion circuit; Thereby frequency, the dutycycle of the pulse signal generator of the instruction control inside that described fpga chip receiving radar processor issues are sent the pulse signal of amplitude, pulsewidth and changeable frequency, the data of simultaneously calling described program storage realize start, stop, radar scanning precision debugging functions.

Described driver module comprises level catch module, tri-state input buffer, logic controller, level shifting circuit and amplifying circuit; Described pulse condition switch and impulsive switched switch are connected to respectively the input end of tri-state input buffer, the output terminal of the output terminal of described tri-state input buffer and level catch module is connected to respectively the input end of described logic controller, the input of described level catch module is provided by outside negative pressure, the output terminal of described logic controller connects the input end of described level shifting circuit, described level shifting circuit output terminal connects the input end of described amplifying circuit, and the output terminal of described amplifying circuit connects the input end of described MOSFET module; Wherein, described logic controller converts the signal of described tri-state input buffer output to the complementary pulse signal of two groups of 3.3V Transistor-Transistor Logic levels, level shifting circuit is to convert the complementary pulse signal of the 3.3V Transistor-Transistor Logic level of logic controller output to 5V COMS pulse signal, pulse signal enters described level shifting circuit and adjusts pulse amplitude, pulse signal after adjusting range promotes driving force after amplifying circuit, directly drives described MOSFET module output high pressure, heavy current pulse modulation voltage.

compared with prior art, beneficial effect of the present invention: the pulse signal of amplitude, pulsewidth and changeable frequency is sent in the instruction that the present invention can issue according to radar processor, control program user can adjust according to demand, can adjust easily like this modulating pulse conduction time and the pulse repetition rate of the active radiating circuit of Active Phased Array Radar and active receiving circuit.The present invention can, according to the needs that use, adjust modulating pulse conduction time and the pulse repetition rate of the active radiating circuit of Active Phased Array Radar and active receiving circuit easily.

brief description of the drawings:

Fig. 1 is the modulating pulse system schematic in radar system of the present invention;

Fig. 2 is the concrete structure figure of signal input/output interface in Fig. 1;

Fig. 3 is signal input/output interface in Fig. 1, signaling conversion circuit and the concrete block diagram that is connected of pulse generating module;

Fig. 4 is the concrete structure figure of the pulse generating module in Fig. 1;

Fig. 5 is the concrete structure figure of driver module in Fig. 1.

Embodiment

Below in conjunction with embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.

Referring to Fig. 1, the modulating pulse system in radar system of the present invention, comprising: signal input/output interface 1, and for completing radar processor command reception and data passback.

Concrete, as shown in Figure 2, signal input/output interface 1 is made up of the input interface 11 of signal and the output interface 12 of signal, and this interface mainly completes radar processor command reception and data passback.The input end of signal input/signal output interface 1 connects radar user's processor, and output terminal connects signaling conversion circuit 2.

Also comprise signaling conversion circuit 2, be connected between described signal input/output interface 1 and pulse generating module 3, convert the required 3.3V Transistor-Transistor Logic level signal of described pulse generating module to for the instruction control level signal that radar processor is issued, and convert the 3.3VTTL level signal of described pulse generating module output passback to level signal that radar processor can be identified.

Concrete, as shown in Figure 3, signaling conversion circuit 2 comprises incoming signal level converter 21 and output signal level converter 22, this circuit has 2 partial actions, incoming signal level converter 21 is that the control level signal that radar processor is issued converts the required 3.3V Transistor-Transistor Logic level signal of pulse generating module to, and output signal level converter 22 is to convert the 3.3V Transistor-Transistor Logic level signal of pulse generating module output to level signal that radar processor can be identified.The input end of incoming signal level converter 21 is connected to signal input interface 11, and output terminal is connected to pulse generating module 3; The input end of output signal level converter 22 is connected to pulse generating module 3, and output terminal is connected to signal output interface 12.

This system also comprises pulse generating module 3, sends the pulse signal of amplitude, pulsewidth and changeable frequency for the instruction issuing according to radar processor; And driver module 4, export high pressure, heavy current pulse modulation voltage for described pulse signal being carried out to signal amplification rear drive MOSFET module 5.

As shown in Figure 4, described pulse generating module 3 comprises fpga chip 31, this fpga chip 31 comprises built-in with CPU module 311, logic controller 312 and pulse signal generator 313, and this fpga chip 31 is external parallel output unit 32, parallel input block 33, program storage 34, impulsive switched switch 35 and pulse condition switch 36 respectively; Described parallel output unit 32, parallel input block 33 connect respectively described signaling conversion circuit 2; Thereby frequency, the dutycycle of the pulse signal generator of the instruction control inside that described fpga chip 31 receiving radar processors issue are sent the pulse signal of amplitude, pulsewidth and changeable frequency, the data of simultaneously calling described program storage realize start, stop, radar scanning precision debugging functions.Concrete, as shown in Figure 4, described pulse generating module 3 is made up of fpga chip, parallel output interface 32, parallel input interface 33, program storage 34, impulsive switched switch 35 and pulse condition switch 36.Adopt xilinx company fpga chip, it comprises built-in with CPU module 311, logic controller 312 and pulse signal generator 313, the frequency of fpga chip by radar processor instruction control wave generator 313, dutycycle and to the calling of program storage 34 data, realize start, stop, the function such as radar scanning precision correction.The fpga chip of pulse generating module 3 connects respectively parallel output unit 32, parallel input block 33, program storage 34, impulsive switched switch 35 and pulse condition switch 36.Impulsive switched switch 35 and pulse condition switch 36 are connected to driver module 4.

Described driver module 4 comprises level catch module 41, tri-state input buffer 42, logic controller 43, level shifting circuit 44 and amplifying circuit 45, described pulse condition switch 36 and impulsive switched switch 35 are connected to respectively the input end of tri-state input buffer 42, the output terminal of the output terminal of described tri-state input buffer 42 and level catch module 41 is connected to respectively the input end of described logic controller 43, the input of described level catch module 41 is provided by outside negative pressure, the output terminal of described logic controller 43 connects the input end of described level shifting circuit 44, described level shifting circuit 44 output terminals connect the input end of described amplifying circuit 45, the output terminal of described amplifying circuit 45 connects the input end of described MOSFET module 5, wherein, described logic controller 43 converts the signal of described tri-state input buffer output to the complementary pulse signal of two groups of 3.3V Transistor-Transistor Logic levels, level shifting circuit 44 is that the complementary pulse signal of 3.3V Transistor-Transistor Logic level that logic controller 43 is exported converts 5V COMS pulse signal to, pulse signal enters described level shifting circuit 44 and adjusts pulse amplitude, pulse signal after adjusting range promotes driving force after amplifying circuit 45, directly drives described MOSFET module 5 to export high pressure, heavy current pulse modulation voltage.

Concrete, as shown in Figure 5, described driver module 4 is made up of level catch module 41, tri-state input buffer 42, logic controller 43, level shifting circuit 44 and amplifying circuit 45.Wherein level catch module 41 is a kind of cascade logic connection protection modules, and in the time not having negative supply to provide, locking is output as low level by this module.Tri-state input buffer 42 is control devices that a kind of logic high enables, and it has output low level, high level and three kinds of states of high resistant; Logic controller 43 is exactly the complementary pulse signal that the signal of tri-state input buffer output is converted to two groups of 3.3V Transistor-Transistor Logic levels, level shifting circuit 44 is to convert the 3.3V Transistor-Transistor Logic level complementary signal of logic controller output to 5V COMS pulse signal, amplifying circuit 45 is a kind of amplifying circuits that high speed, high pressure, large electric current are provided, and this circuit is to drive function for rear class MOSFET module 5 provides high speed opening and closing.Pulse condition switch 36 and impulsive switched switch 35 are connected to tri-state input buffer 42 and input, the output of the output of tri-state input buffer 42 and level catch module 41 is connected to logic controller 43 and inputs, the input of level catch module 41 is provided by negative pressure, logic controller output 43 connects the input of level shifting circuit 44, level shifting circuit 44 outputs connect amplifying circuit 45 to be inputted, and amplifying circuit 45 outputs connect the input of MOSFET module 5.

In the present invention, the control input end of pulse generating module 3 is connected with radar recipient processor by signaling conversion circuit 2.User can be by the repetition frequency of the variation of the generation of instruction control modulating pulse, pulse width and pulse.Preset following program function is housed in the program storage 34 of pulse generating module 3 built-in CPU: 1) driver module 4 enable control, can make driver module close work or wake work up by enabling control signal.2) produce 1KHz~1MHz repetition frequency, the pulse signal that dutycycle is adjustable, the instruction that can send according to user, exports corresponding pulse signal.

The present invention's FPGA(programmable logic device (PLD)) the embedded CPU composition pulse producer of chip, with digital command clamp-pulse generator, control program is all used Verilog HDL language compilation, user can adjust according to demand, adjusts easily modulating pulse conduction time and the pulse repetition rate of the active radiating circuit of Active Phased Array Radar and active receiving circuit.Driver module adopts level catch module 41, tri-state input buffer 42 and logic controller 43 circuit, the pulse signal of convenient locking input, adjust pulse amplitude with over level change-over circuit (44), pulse signal after adjusting range is after amplifying circuit 45 amplifies, promote driving force, improve 5 switching times of driven MOS FET module.

When system works of the present invention, pulse generating module 3 is output as low level at default conditions, now to input enable signal be low level to driver module 4, driver module 4 is in closed condition, when receiving after user instruction, driver module 4) input enable signal receives high level, and driver module 4 is in stand-by operation state, now can export corresponding pulse modulation voltage according to the command request of radar processor output, the modulation voltage of output has good waveform and stability.

The pulse signal of amplitude, pulsewidth and changeable frequency is sent in the instruction that the present invention can issue according to radar processor, control program user can adjust according to demand, can adjust easily like this modulating pulse conduction time and the pulse repetition rate of the active radiating circuit of Active Phased Array Radar and active receiving circuit.The present invention can, according to the needs that use, adjust modulating pulse conduction time and the pulse repetition rate of the active radiating circuit of Active Phased Array Radar and active receiving circuit easily.

By reference to the accompanying drawings the specific embodiment of the present invention is had been described in detail above, but the present invention is not restricted to above-mentioned embodiment, in the spirit and scope situation of claim that does not depart from the application, those skilled in the art can make various amendments or remodeling.

Claims (3)

1. the modulating pulse system in radar system, is characterized in that, comprising:
Signal input/output interface (1), for completing radar processor command reception and data passback;
Signaling conversion circuit (2), be connected between described signal input/output interface (1) and pulse generating module (3), convert the required 3.3V Transistor-Transistor Logic level signal of described pulse generating module (3) to for the instruction control level signal that radar processor is issued, and convert the 3.3V Transistor-Transistor Logic level signal of described pulse generating module (3) output passback to level signal that radar processor can be identified;
Pulse generating module (3), sends the pulse signal of amplitude, pulsewidth and changeable frequency for the instruction issuing according to radar processor;
Driver module (4), amplifies rear drive MOSFET module (5) output high pressure, heavy current pulse modulation voltage for described pulse signal being carried out to signal.
2. the modulating pulse system in radar system according to claim 1, it is characterized in that, described pulse generating module (3) comprises fpga chip (31), this fpga chip (31) comprises built-in with CPU module (311), logic controller (312) and pulse signal generator (313), and this fpga chip (31) is external parallel output unit (32), parallel input block (33), program storage (34), impulsive switched switch (35) and pulse condition switch (36) respectively; Described parallel output unit (32), parallel input block (33) connect respectively described signaling conversion circuit (2); Described fpga chip (31) thus frequency, the dutycycle of the pulse signal generator of the instruction control inside that receiving radar processor issues are sent the pulse signal of amplitude, pulsewidth and changeable frequency, the data of simultaneously calling described program storage realize start, stop, radar scanning precision debugging functions.
3. the modulating pulse system in radar system according to claim 2, it is characterized in that, described driver module (4) comprises level catch module (41), tri-state input buffer (42), logic controller (43), level shifting circuit (44) and amplifying circuit (45), described pulse condition switch (36) and impulsive switched switch (35) are connected to respectively the input end of tri-state input buffer (42), the output terminal of the output terminal of described tri-state input buffer (42) and level catch module (41) is connected to respectively the input end of described logic controller (43), the input of described level catch module (41) is provided by outside negative pressure, the output terminal of described logic controller (43) connects the input end of described level shifting circuit (44), described level shifting circuit (44) output terminal connects the input end of described amplifying circuit (45), the output terminal of described amplifying circuit (45) connects the input end of described MOSFET module (5), wherein, described logic controller (43) converts the signal of described tri-state input buffer output to the complementary pulse signal of two groups of 3.3V Transistor-Transistor Logic levels, level shifting circuit (44) is to convert the complementary pulse signal of the 3.3V Transistor-Transistor Logic level of logic controller (43) output to 5V COMS pulse signal, pulse signal enters described level shifting circuit (44) and adjusts pulse amplitude, pulse signal after adjusting range promotes driving force after amplifying circuit (45), directly drive described MOSFET module (5) output high pressure, heavy current pulse modulation voltage.
CN201410380041.8A 2014-08-04 2014-08-04 A kind of modulation pulse system in radar system CN104101866B (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN105007002A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on single-MEMS sensor
CN105007004A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Three-phase driving circuit structure based on multi-MEMS sensor
CN105007003A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Three-phase driving circuit structure based on single-MEMS sensor
CN105048895A (en) * 2015-07-06 2015-11-11 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on multiple MEMS sensors
CN105048894A (en) * 2015-07-06 2015-11-11 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on single MEMS sensor
CN105652247A (en) * 2015-12-31 2016-06-08 成都雷电微力科技有限公司 Negative voltage pulse modulation circuit

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Publication number Priority date Publication date Assignee Title
CN105007002A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on single-MEMS sensor
CN105007004A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Three-phase driving circuit structure based on multi-MEMS sensor
CN105007003A (en) * 2015-07-06 2015-10-28 成都弘毅天承科技有限公司 Three-phase driving circuit structure based on single-MEMS sensor
CN105048895A (en) * 2015-07-06 2015-11-11 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on multiple MEMS sensors
CN105048894A (en) * 2015-07-06 2015-11-11 成都弘毅天承科技有限公司 Single-phase driving circuit structure based on single MEMS sensor
CN105048895B (en) * 2015-07-06 2018-03-16 成都弘毅天承科技有限公司 A kind of single-phase driving circuit structure based on MEMS sensor
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CN105048894B (en) * 2015-07-06 2018-03-30 成都弘毅天承科技有限公司 A kind of single-phase driving circuit structure based on single MEMS sensor
CN105652247A (en) * 2015-12-31 2016-06-08 成都雷电微力科技有限公司 Negative voltage pulse modulation circuit
CN105652247B (en) * 2015-12-31 2018-11-30 成都雷电微力科技有限公司 A kind of negative voltage pulse modulation circuit

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Pledgor: RML Technology Co., Ltd.

Registration number: 2018510000122

CP03 Change of name, title or address

Address after: 610041 Shiyang Industrial Park, No.288, Yixin Avenue, hi tech Zone, Chengdu, Sichuan Province

Patentee after: Chengdu lightning Micro Power Technology Co., Ltd

Address before: 610041 Shiyang Industrial Park, hi tech Zone, Chengdu, Sichuan

Patentee before: RML TECHNOLOGY Co.,Ltd.