CN105974379A - Device for simulating rotation speed of antenna and realization method of device - Google Patents
Device for simulating rotation speed of antenna and realization method of device Download PDFInfo
- Publication number
- CN105974379A CN105974379A CN201610307045.2A CN201610307045A CN105974379A CN 105974379 A CN105974379 A CN 105974379A CN 201610307045 A CN201610307045 A CN 201610307045A CN 105974379 A CN105974379 A CN 105974379A
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- Prior art keywords
- antenna
- control
- outfan
- digital
- fpga
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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
Abstract
The invention discloses a device for simulating the rotation speed of an antenna and a realization method of the device. The device comprises the antenna; the output end of a radar source is connected with the input end of a numerical-control microwave switch, and the output end of the numerical-control microwave switch is connected with the input end of an electric control attenuator; and the output end of a clock oscillator is connected with the reference clock end of an FPGA control circuit, one output end of the FPGA control circuit is connected with the control end of the numerical-control microwave switch, the other output end of the FPGA control circuit is connected with input end of a digital to analog converter, the output end of the digital to analog converter is connected with the control end of the electric control attenuator, and the output end of theelectric control attenuator is connected with the signal input end of the antenna. The device and the realization method thereof can be used to solve the technical problems that the circuit structure is complex, the anti-interference performance is low and the using cost is high when an airborne radar signal simulator is used to simulate the rotation speed of the antenna in the prior art.
Description
Technical field
The invention belongs to airborne radar signal imitation technology, particularly relate to a kind of device realizing artificial antenna rotating speed and implementation method.
Background technology
The difference according to its function of airborne radar signal simulator includes linear frequency modulation, produces double agile signal and artificial antenna rotating speed etc., but the function of artificial antenna rotating speed to be realized, need at airborne radar signal simulator outfan to connect the antenna that can rotate, the rotation of antenna to be realized needs to use integrated circuit to realize, there is circuit structure complicated, anti-interference difference and the most high defect of use cost.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of device realizing artificial antenna rotating speed andImplementation method, to solve the airborne radar signal simulator artificial antenna rotating speed of prior art, the circuit structure existed is complicated, anti-interference difference and the technical problem such as use cost is high.
Technical solution of the present invention:
A kind of device realizing artificial antenna rotating speed, it includes that antenna, radar source outfan are connected with numerical control microwave switch input, and numerical control microwave switch outfan is connected with electrically controlled attenuator input；The clock outfan that shakes is connected with FPGA control circuit reference clock end, FPGA control circuit No. one outfan is connected with the control end of numerical control microwave switch, another road outfan of FPGA control circuit is connected with the input of digital to analog converter, the outfan of digital to analog converter is connected with the control end of electrically controlled attenuator, and electrically controlled attenuator outfan is connected with aerial signal input.
Described antenna is conical antenna.
The control method of the described device realizing artificial antenna rotating speed, it includes:
Step 1, being stepping rotary antenna by 1rad, record antenna turns to performance number during each angle；
Step 2, performance number is converted to the power attenuation amount that each angle is corresponding, and power attenuation amount is corresponding with the magnitude of voltage of electrically controlled attenuator；
Step 3, the magnitude of voltage of electrically controlled attenuator is corresponding with the control code of digital to analog converter, the control code data of digital to analog converter are stored in FPGA control circuit；
Step 4, Zhong Zhenwei FPGA control circuit provide system clock, as timing base, according to the antenna velocity of rotation that need to simulate, within the time corresponding with rotating speed, it is sequentially output and is stored in the control code of digital to analog converter in FPGA, the attenuation of regulation electrically controlled attenuator, i.e. achieves the function of artificial antenna rotating speed.
Beneficial effects of the present invention:
The advantages such as the present invention uses the output signal input signal as digital to analog converter of FPGA, is regulated the output of electrically controlled attenuator by the output signal of digital to analog converter, has simple in construction, and degree of accuracy is high, and capacity of resisting disturbance is strong；
Circuit structure of the present invention is simple, uses digital to analog converter output analog voltage to control electrically controlled attenuator, and the performance number of output signal, output accuracy is higher, and the degree of accuracy that improve artificial antenna rotating speed is high；
The present invention uses clock to bestir oneself the system clock for FPGA control circuit, and the disposal ability of FPGA is relatively strong, can respond the rotating speed of different artificial antenna, be with a wide range of applications.
The present invention solves the technical problems such as the airborne radar signal simulator artificial antenna rotating speed of prior art, the circuit structure existed complexity, anti-interference difference and use cost are high.
Accompanying drawing illustrates:
Fig. 1 is the structural principle block diagram of the present invention.
Detailed description of the invention
A kind of device realizing artificial antenna rotating speed, it includes that antenna, radar source outfan are connected with numerical control microwave switch input, and numerical control microwave switch outfan is connected with electrically controlled attenuator input；The clock outfan that shakes is connected with FPGA control circuit reference clock end, FPGA control circuit No. one outfan is connected with the control end of numerical control microwave switch, another road outfan of FPGA control circuit is connected with the input of digital to analog converter, the outfan of digital to analog converter is connected with the control end of electrically controlled attenuator, and electrically controlled attenuator outfan is connected with aerial signal input.When electrically controlled attenuator rotates according to artificial antenna, the corresponding performance number of different angles realizes attenuated output signal control, is thus connected to antenna and obtains the final output signal of artificial antenna rotating speed.
Described radar source can replace by other signal source.
Described numerical control microwave switch receives the control instruction from FPGA, has the advantage that response speed is fast, can quickly turn off the output signal decay for the high-power value of simulated implementation.
Described electrically controlled attenuator uses magnitude of voltage to be controlled decay, has the advantage that precision is high, can be high with the precision of artificial antenna rotating speed.
Described antenna uses conical antenna, it is also possible to replace with other antenna.
The control method of the described device realizing artificial antenna rotating speed, it includes:
Step 1, by 1rad(antenna rotational angle unit) be stepping rotary antenna, performance number when record antenna turns to each angle；
Step 2, performance number is converted to the power attenuation amount that each angle is corresponding, and power attenuation amount is corresponding with the magnitude of voltage of electrically controlled attenuator；
Step 3, the magnitude of voltage of electrically controlled attenuator is corresponding with the control code of digital to analog converter, the control code data of digital to analog converter are stored in FPGA control circuit；
Step 4, Zhong Zhenwei FPGA control circuit provide system clock, as timing base, according to the antenna velocity of rotation that need to simulate, within the time corresponding with rotating speed, it is sequentially output and is stored in the control code of digital to analog converter in FPGA, the attenuation of regulation electrically controlled attenuator, i.e. achieves the function of artificial antenna rotating speed.
Claims (3)
1. realizing a device for artificial antenna rotating speed, it includes antenna, it is characterised in that: radar source outfan is connected with numerical control microwave switch input, and numerical control microwave switch outfan is connected with electrically controlled attenuator input；The clock outfan that shakes is connected with FPGA control circuit reference clock end, FPGA control circuit No. one outfan is connected with the control end of numerical control microwave switch, another road outfan of FPGA control circuit is connected with the input of digital to analog converter, the outfan of digital to analog converter is connected with the control end of electrically controlled attenuator, and electrically controlled attenuator outfan is connected with aerial signal input.
A kind of device realizing artificial antenna rotating speed the most according to claim 1, it is characterised in that: described antenna is conical antenna.
Realizing the control method of the device of artificial antenna rotating speed the most as claimed in claim 1 or 2, it includes:
Step 1, being stepping rotary antenna by 1rad, record antenna turns to performance number during each angle；
Step 2, performance number is converted to the power attenuation amount that each angle is corresponding, and power attenuation amount is corresponding with the magnitude of voltage of electrically controlled attenuator；
Step 3, the magnitude of voltage of electrically controlled attenuator is corresponding with the control code of digital to analog converter, the control code data of digital to analog converter are stored in FPGA control circuit；
Step 4, Zhong Zhenwei FPGA control circuit provide system clock, as timing base, according to the antenna velocity of rotation that need to simulate, within the time corresponding with rotating speed, it is sequentially output and is stored in the control code of digital to analog converter in FPGA, the attenuation of regulation electrically controlled attenuator, i.e. achieves the function of artificial antenna rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307045.2A CN105974379B (en) | 2016-05-11 | 2016-05-11 | A kind of device that realizing artificial antenna revolving speed and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307045.2A CN105974379B (en) | 2016-05-11 | 2016-05-11 | A kind of device that realizing artificial antenna revolving speed and implementation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105974379A true CN105974379A (en) | 2016-09-28 |
| CN105974379B CN105974379B (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610307045.2A Active CN105974379B (en) | 2016-05-11 | 2016-05-11 | A kind of device that realizing artificial antenna revolving speed and implementation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051800A (en) * | 2017-12-13 | 2018-05-18 | 贵州航天计量测试技术研究所 | The room noise source localization method of the idle sound intensity is reconstructed based on spherical surface near field acoustic holography |
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| JPS62118274A (en) * | 1985-11-18 | 1987-05-29 | Nippon Kokan Kk <Nkk> | Variable speed antenna radar for marine vessel |
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| CN104659498A (en) * | 2015-03-05 | 2015-05-27 | 北京航空航天大学 | Rotatable double-antenna PARC (polarimetric active radar calibrator) and polarimetric active radar calibration method thereof |
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2016
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| JPS62118274A (en) * | 1985-11-18 | 1987-05-29 | Nippon Kokan Kk <Nkk> | Variable speed antenna radar for marine vessel |
| CN102495565A (en) * | 2011-11-25 | 2012-06-13 | 中国电子科技集团公司第三十八研究所 | Phased array radar antenna beam control device |
| CN103259089A (en) * | 2013-04-22 | 2013-08-21 | 南京中网卫星通信股份有限公司 | Control method and control device of X-waveband weather radar antenna |
| CN204068940U (en) * | 2014-08-23 | 2014-12-31 | 成都四威航空电源有限公司 | Based on the high-power transmitter of linearizer |
| CN104659498A (en) * | 2015-03-05 | 2015-05-27 | 北京航空航天大学 | Rotatable double-antenna PARC (polarimetric active radar calibrator) and polarimetric active radar calibration method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051800A (en) * | 2017-12-13 | 2018-05-18 | 贵州航天计量测试技术研究所 | The room noise source localization method of the idle sound intensity is reconstructed based on spherical surface near field acoustic holography |
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| CN105974379B (en) | 2019-02-15 |
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