CN111366903B - Radar channel transmission calibration system - Google Patents
Radar channel transmission calibration system Download PDFInfo
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- CN111366903B CN111366903B CN202010257431.1A CN202010257431A CN111366903B CN 111366903 B CN111366903 B CN 111366903B CN 202010257431 A CN202010257431 A CN 202010257431A CN 111366903 B CN111366903 B CN 111366903B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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- Radar, Positioning & Navigation (AREA)
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- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a radar channel transmission calibration system, which comprises a signal sampling module and a frequency modulation feedback module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample carrier signals in the radar channel transmission calibration system, the frequency modulation feedback module uses an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a frequency modulation circuit to calibrate the frequency of the signals, simultaneously uses a triode Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal enhancement circuit to adjust the waveform of the signals, uses the operational amplifier AR4 to buffer the signals, after the signals are divided by a resistor R12, a signal emitter E1 is triggered to work, uses a triode Q2 to detect the output signals of the operational amplifier AR3 and the potential difference of a collector electrode of the triode Q1, and simultaneously uses the operational amplifier AR3, a diode D2 and a diode D3 to form a peak circuit to screen peak value signals and feed back the peak value signals, the node signal sampling adjustment in the radar channel transmission calibration system can be carried out, and the node signal sampling adjustment is converted into an alarm analysis signal of the radar channel transmission calibration system terminal.
Description
Technical Field
The invention relates to the technical field of radar, in particular to a radar channel transmission calibration system.
Background
Multi-channel radar systems are increasing in their importance especially in digital Beamforming (Beamforming), angle estimation, antenna diversity and processing gain (other noise reduction due to processing), because the radar channel receiving processing front-end equipment and the display terminal are generally mutually independent and can be connected by transmission modes such as twisted-pair cables, optical cables, Ku guard channels, microwave communication and the like, in some application areas both the radar front-end and the display terminal are even several hundred to several thousand kilometers apart from each other, in these fields, the front-end equipment and the display terminal are far apart in space, the transmission channel condition is complex, the terminal has little knowledge of the operating state of the front-end and the transmission channel, when a signal is lost during channel transmission, the terminal cannot timely adjust the radar signal transmission system in the first time, and the using effect of the radar signal transmission system is seriously influenced.
Disclosure of Invention
In view of the above situation, an object of the present invention is to provide a radar channel transmission calibration system, which can sample and adjust node signals in the radar channel transmission calibration system, and convert the node signals into alarm analysis signals of a radar channel transmission calibration system terminal.
The technical scheme includes that the radar channel transmission calibration system comprises a signal sampling module and a frequency modulation feedback module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample carrier signals in the radar channel transmission calibration system, the frequency modulation feedback module uses an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a frequency modulation circuit to calibrate the signal frequency, simultaneously uses a triode Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal enhancement circuit to adjust the signal waveform, uses the operational amplifier AR4 to buffer signals, the signals are divided by a resistor R12 to trigger a signal transmitter E1 to work, uses a triode Q2 to detect the potential difference between the output signals of the operational amplifier AR3 and the collector signal of the triode Q1, uses the operational amplifier AR3, a diode D2 and a diode D3 to form a peak circuit to screen peak signals and feed back the peak signals to the anti-phase input end of the operational amplifier AR2, further adjusting the amplitude of the output signal of the operational amplifier AR2, and finally sending a signal to the terminal of the radar channel transmission calibration system by the signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. an inductor L4 is used for filtering a high-frequency signal component, a capacitor C1 is a bypass capacitor, a capacitor C2 is used for filtering a low-frequency signal component, the signal frequency is adjusted, an operational amplifier AR2 is used for comparing signals, the static working point of the signals is stabilized, new noise waves of the frequency-modulated signals are prevented, then whether the signals are abnormal or not is detected by using the resistance ratio of a loop resistance of a variable resistor RW1 and the resistance of a resistor R6, when the signals are abnormal, a triode Q1 is conducted and is discharged to the low end through a resistor R9 to realize the voltage reduction effect, otherwise, a triode Q1 is not conducted to not trigger a signal emitter E1 to work, a power supply +5V is used for providing a base potential for a triode Q1 through voltage division of the variable resistor RW2 and the resistor R7, and the reliability;
2. the method comprises the steps of triggering a signal transmitter E1 to work after a buffer signal of an operational amplifier AR4 is subjected to voltage division through a resistor R12, detecting an output signal of the operational amplifier AR3 and a signal potential difference of a collector electrode of a triode Q1 by using a triode Q2, further finely adjusting the waveform of a signal, ensuring the accuracy of the signal received by a radar channel transmission calibration system terminal, screening a peak signal by using a peak circuit consisting of the operational amplifier AR3, a diode D2 and a diode D3, feeding back the peak signal to an inverting input end of an operational amplifier AR2, further adjusting the amplitude of the output signal of the operational amplifier AR2, finally sending a signal by using a signal transmitter E1 as an alarm analysis signal of the radar channel transmission calibration system terminal, and adjusting the radar channel in time by.
Drawings
Fig. 1 is a frequency modulation feedback block diagram of a radar channel transmission calibration system according to the present invention.
Fig. 2 is a block diagram of a signal sampling module of a radar channel transmission calibration system according to the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In a first embodiment, a radar channel transmission calibration system includes a signal sampling module and a fm feedback module, the signal sampling module uses a signal sampler J1 with model of DAM-3056AH to sample a carrier signal in the radar channel transmission calibration system, the fm feedback module uses an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a fm circuit to calibrate the frequency of the signal, uses a transistor Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal waveform of a signal enhancement circuit, uses the operational amplifier AR4 to buffer a signal, divides the signal by a resistor R12 to trigger a signal transmitter E1 to operate, uses the transistor Q2 to detect an output signal of the operational amplifier AR3 and a collector signal potential difference of the transistor Q1, uses the operational amplifier AR3, a diode D2 and a diode D3 to form a peak circuit to screen a peak signal and feed back the peak signal to an inverting input end of the operational amplifier AR2, further adjusting the amplitude of the output signal of the operational amplifier AR2, and finally sending a signal to a radar channel transmission calibration system terminal by a signal transmitter E1;
the frequency modulation feedback module utilizes an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a frequency modulation circuit to calibrate signal frequency, utilizes an inductor L4 to filter high-frequency signal components, utilizes a capacitor C1 as a bypass capacitor, utilizes a capacitor C2 to filter low-frequency signal components, adjusts signal frequency, compares signals by utilizing an operational amplifier AR2 to stabilize a signal static working point and prevent new noise waves from appearing in the frequency-modulated signals, then utilizes a triode Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal enhancement circuit to adjust signal waveforms, utilizes a variable resistor RW1 loop resistance value and a resistor R6 resistance value ratio to detect whether the signals are abnormal or not, when the signals are abnormal, the triode Q1 is conducted and is discharged to the low end through a resistor R9 to realize a voltage reduction effect, otherwise, the triode Q1 is not conducted, cannot trigger the signal transmitter E1 to work, and utilizes a power supply +5V to pass through the variable resistor RW2, The resistor R7 divides voltage to provide base potential for the triode Q1, the reliability of detection of the triode Q1 is guaranteed, a buffer signal of an operational amplifier AR4 is used for triggering a signal transmitter E1 to work after being divided by the resistor R12, meanwhile, a signal potential difference between an output signal of the operational amplifier AR3 and a collector electrode signal of the triode Q1 is detected by the triode Q2, the waveform of the signal is further finely adjusted, the accuracy of signal receiving of a radar channel transmission calibration system terminal is guaranteed, meanwhile, a peak circuit consisting of the operational amplifier AR3, a diode D2 and a diode D3 is used for screening peak signals and feeding the peak signals back to an inverting input end of the operational amplifier AR2, the amplitude of the output signal of the operational amplifier AR2 is further adjusted, and finally, the signal transmitter E1 sends;
the specific structure of the frequency modulation feedback module comprises that a non-inverting input end of an operational amplifier AR2 is connected with one end of a resistor R3 and one end of a capacitor C2, an inverting input end of an operational amplifier ARF2 is connected with one end of a resistor R4 and the negative electrode of a diode D2, the other end of a resistor R3 is connected with the other end of a capacitor C2 and one end of an inductor L4, the other end of the inductor L4 is connected with the other end of a resistor R4 and one end of a capacitor C4, the other ends of the resistor R4 and the capacitor C4 are grounded, an output end of the operational amplifier AR4 is connected with one end of a variable resistor RW 4 and one end of a resistor R4, the other end of the resistor R4 is connected with a sliding end of the variable resistor RW 4, a collector of a triode Q4 and a base of the triode Q4, the other end of the variable resistor R4 is connected with a power supply +5V and one end of the emitter of the variable resistor R4, and one end of the sliding end of the, The other end of the capacitor C3, the other end of the resistor R9 is grounded, the base of the triode Q1 is connected to the non-inverting input terminal of the amplifier AR4, the other end of the resistor R7, and one end of the resistors R10 and C5, the other ends of the resistor R10 and the capacitor C5 are grounded, the inverting input terminal of the amplifier AR4 is connected to one end of the resistor R11, the output terminal of the amplifier AR4 is connected to the other end of the resistor R11, one end of the resistor R12, and the anode of the diode D4, the cathode of the diode D4 is connected to the emitter of the triode Q4, the collector of the triode Q4 is connected to the non-inverting input terminal of the amplifier AR4, the anode of the diode D4, the inverting input terminal of the amplifier AR4 is connected to one end of the resistor R4, the other end of the amplifier AR4 is connected to the cathode of the diode D4, the anode of the diode D4, and the.
On the basis of the scheme, the signal sampling module selects a signal sampler J1 with the model of DAM-3056AH to sample carrier signals in the radar channel transmission calibration system, an operational amplifier AR1 is used for amplifying signals in phase, the power supply end of the signal sampler J1 is connected with +5V, the grounding end of the signal sampler J1 is grounded, the output end of the signal sampler J1 is connected with the negative electrode of a voltage regulator tube D1 and the in-phase input end of an operational amplifier AR1, the positive electrode of the voltage regulator tube D1 is grounded, the reverse phase input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a resistor R2, the other end of a resistor R1 is grounded, and the output end of an operational amplifier AR1 is connected with the other end of a resistor R2 and one end of.
When the system is used specifically, the system comprises a signal sampling module and a frequency modulation feedback module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample carrier signals in the system, the frequency modulation feedback module uses an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a frequency modulation circuit to calibrate the signal frequency, uses an inductor L4 to filter out high-frequency signal components, the capacitor C1 is a bypass capacitor, simultaneously uses a capacitor C2 to filter out low-frequency components of signals, adjusts the signal frequency, compares the signals using the operational amplifier AR2 to stabilize the signal static working point and prevent new noise from appearing in the frequency-modulated signals, then uses a triode Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal enhancement circuit to adjust the signal waveform, and uses a loop 1 and a resistor R6 to detect whether the signals are abnormal or not, when the signal is abnormal, the transistor Q1 is conducted and is discharged to the low end through the resistor R9 to realize the voltage reduction effect, otherwise, the transistor Q1 is not conducted and can not trigger the signal emitter E1 to work, and the power supply +5V is used to provide base potential for the triode Q1 through voltage division by the variable resistor RW2 and the resistor R7, the reliability of detection of the triode Q1 is ensured, and the operational amplifier AR4 is used to trigger the signal emitter E1 to work after the buffer signal is divided by the resistor R12, meanwhile, the triode Q2 is used for detecting the potential difference between the output signal of the operational amplifier AR3 and the signal potential difference of the collector of the triode Q1, the signal waveform is further finely adjusted, the accuracy of the signal received by the radar channel transmission calibration system terminal is ensured, meanwhile, a peak circuit consisting of the operational amplifier AR3, the diode D2 and the diode D3 is used for screening peak signals and feeding the peak signals back to the inverting input end of the operational amplifier AR2, the amplitude of the output signals of the operational amplifier AR2 is further adjusted, and finally the signal transmitter E1 sends signals to the terminal of the radar channel transmission calibration system.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (1)
1. A radar channel transmission calibration system comprises a signal sampling module and a frequency modulation feedback module, and is characterized in that the signal sampling module samples carrier signals in the radar channel transmission calibration system by using a signal sampler J1 with the model of DAM-3056AH, the frequency modulation feedback module uses an operational amplifier AR2, an inductor L4, a capacitor C1 and a capacitor C2 to form a frequency modulation circuit to calibrate the frequency of the signals, simultaneously uses a triode Q1, an adjustable resistor RW1 and an adjustable resistor RW2 to form a signal enhancement circuit to adjust the waveform of the signals, uses the operational amplifier AR4 to buffer the signals, divides the voltage by a resistor R12 to trigger a signal transmitter E1 to work, uses a triode Q2 to detect the output signals of the operational amplifier AR3 and the potential difference of the collector of the triode Q1, and simultaneously uses the operational amplifier AR3, a diode D2 and a diode D3 to form a peak circuit to screen peak value signals to be fed back to the anti-phase input end of the, further adjusting the amplitude of the output signal of the operational amplifier AR2, and finally sending a signal to a radar channel transmission calibration system terminal by a signal transmitter E1;
the frequency modulation feedback module comprises an operational amplifier AR2, wherein the non-inverting input end of the operational amplifier AR2 is connected with one end of a resistor R3 and one end of a capacitor C2, the inverting input end of the operational amplifier AR2 is connected with one end of a resistor R4 and the negative electrode of a diode D2, the other end of the resistor R2 is connected with the other end of the capacitor C2 and one end of an inductor L2, the other end of the inductor L2 is connected with the other end of the resistor R2 and one end of a capacitor C2, the other ends of the resistor R2 and the capacitor C2 are grounded, the output end of the operational amplifier AR2 is connected with one end of a variable resistor RW2 and one end of a resistor R2, the other end of the resistor R2 is connected with one end of a power supply +5V and one end of a resistor R2, the sliding end of the variable resistor R2 and one end of the variable resistor R2 are connected with one end of the sliding capacitor RW2, and the other end of the variable resistor R2 and the emitter R2 are connected with, The other end of the capacitor C3, the other end of the resistor R9 is grounded, the base of the triode Q1 is connected to the non-inverting input terminal of the amplifier AR4, the other end of the resistor R7, and one end of the resistors R10 and C5, the other ends of the resistors R10 and C5 are grounded, the inverting input terminal of the amplifier AR4 is connected to one end of the resistor R11, the output terminal of the amplifier AR4 is connected to the other end of the resistor R11, one end of the resistor R12, and the anode of the diode D4, the cathode of the diode D4 is connected to the emitter of the triode Q4, the collector of the triode Q4 is connected to the non-inverting input terminal of the amplifier AR4, the anode of the diode D4, the inverting input terminal of the amplifier AR4 is connected to one end of the resistor R4, the other end of the amplifier AR4 is connected to the cathode of the diode D4, the anode of the diode D4, and the other end;
the signal sampling module comprises a DAM-3056AH signal sampler J1, a power supply end of a signal sampler J1 is connected with +5V, a grounding end of a signal sampler J1 is grounded, an output end of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and a non-inverting input end of an operational amplifier AR1, a positive electrode of a voltage regulator tube D1 is grounded, an inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is grounded, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and one end of an inductor L4.
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| CN202010257431.1A CN111366903B (en) | 2020-04-03 | 2020-04-03 | Radar channel transmission calibration system |
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| JP5112213B2 (en) * | 2008-08-01 | 2013-01-09 | パナソニック株式会社 | Transmission circuit and communication device using transmission circuit |
| CN102437821A (en) * | 2011-11-30 | 2012-05-02 | 上海无线电设备研究所 | Device and method for linearization of synthetic aperture radar transmitter |
| US9720074B2 (en) * | 2014-02-05 | 2017-08-01 | Nxp Usa, Inc. | Circuitry for and method of generating a frequency modulated radar transmitter signal, a radar transceiver circuit and a radar system |
| JP6717254B2 (en) * | 2017-04-19 | 2020-07-01 | 株式会社デンソー | Radar signal processor and radar system |
| CN109347513B (en) * | 2018-11-30 | 2020-01-31 | 平顶山学院 | bidding procurement information calibration circuit |
| CN209248012U (en) * | 2018-12-25 | 2019-08-13 | 中国人民解放军空军工程大学航空机务士官学校 | A kind of calibration system of airborne laser radar |
| CN110849609B (en) * | 2019-11-29 | 2021-04-27 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN110856210B (en) * | 2019-11-29 | 2022-09-23 | 国网河南省电力公司信息通信公司 | Power distribution network communication safety protection system |
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| CN109743057A (en) * | 2019-01-10 | 2019-05-10 | 郑州工程技术学院 | A kind of data transmission of internet of things calibration equipment |
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Address after: Room 3208, block a, Yunfeng block, window of Greenland, No.80, Puhui Road, Zhengzhou area (Zhengdong), Zhengzhou pilot Free Trade Zone, Henan Province Patentee after: Huaxing Communication Technology Co., Ltd Address before: Room 3204, block a, Yunfeng block, window of Greenland, No.80, Puhui Road, Zhengzhou area (Zhengdong), Zhengzhou pilot Free Trade Zone, Henan Province Patentee before: HENAN HUAXING COMMUNICATION TECHNOLOGY Co.,Ltd. |