CN203084190U - Continuous-wave target guiding radar - Google Patents
Continuous-wave target guiding radar Download PDFInfo
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- CN203084190U CN203084190U CN 201220725671 CN201220725671U CN203084190U CN 203084190 U CN203084190 U CN 203084190U CN 201220725671 CN201220725671 CN 201220725671 CN 201220725671 U CN201220725671 U CN 201220725671U CN 203084190 U CN203084190 U CN 203084190U
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Abstract
The utility model discloses a continuous-wave target guiding radar which comprises a transmitting antenna, a receiving antenna, a high-frequency electronic unit, a pitching mechanism, an azimuth driving mechanism, a low-frequency electronic unit and a computer. The middle portion on the back of an antenna array is fixedly connected with the high-frequency electronic unit. The high-frequency electronic unit is arranged on the pitching mechanism which is connected with the azimuth driving mechanism. A whole structure composed of the antenna array, the high-frequency electronic unit and the pitching mechanism is driven by the azimuth driving mechanism to move along with the pitching mechanism. A transmitter is respectively connected with a frequency synthesizer and the transmitting antenna through a signal cable. A receiver is respectively connected with the frequency synthesizer, the receiving antenna and a signal processor through the signal cable. The antenna is an array antenna, and the receiving antenna can receive pitching beams in three different pointing directions. The receiver respectively amplifies and filters a target echo through three channels. Due to the fact that the receiver produces an intermediate-frequency signal in an intermediate-frequency sampling working mode, three-coordinate measurement on an aerial target is achieved.
Description
Technical field
The utility model belongs to the electronic engineering field, is specifically related to a kind of information commander radar, particularly a kind of continuous wave goal directed radar.
Background technology
At present, continuous wave goal directed radar is because emissive power is little, and frequency and adjustable power have certain low intercepting and capturing antijamming capability in the ECM environment of complexity, and it is little in light weight to have a volume, can be portable, and technical advantage characteristics that can motor-driven use.In solving the radar target elevation angle and highly measuring, generally be to utilize the principle of monopulse interpolation angle measurement to realize the measurement at the elevation angle, this angle measurement mode belongs to the multibeam technique of wave beam simultaneously, owing to be while wave beam system, same echoed signal while quilt two wave beams up and down receives, angle information only is retained in the ratio of two echoes, irrelevant with the power of echo, the error of having avoided glint that precision is brought, so the ratio of precision that its angle measurement obtains is higher, but under this mode, the scope of angle measurement is subjected to the restriction of the fleet angle that beam angle and two wave beams form, and angle measurement scope theoretical upper limit is outside two of wave beam up and down between the 3dB point.In order to enlarge beam coverage, can not effectively satisfy the requirement of beam coverage based on two wave beams, adopting multi-beam is effective solution, but wave beam is many more, and its technology realizes just complicated more, and it is very high that the relevant hardware cost also becomes.
To sum up, study a kind of wave beam restriction of can overcoming, the angle measurement scope bigger and realize that simple continuous wave goal directed radar comes the measurement target elevation angle and be necessary highly.
Summary of the invention
At defective that exists in the above-mentioned prior art or deficiency, the purpose of this utility model is, a kind of continuous wave goal directed radar is provided, this radar adopts linear frequency modulation continuous wave three wave beam systems, array antenna can receive the pitching wave beam that forms three different sensings with receiving antenna, receiver adopts three the tunnel to amplify respectively and filter target echo, adopt the working method of if sampling, produce intermediate-freuqncy signal by receiver, full coherent Doppler processing mode, monopulse surveys high than the width of cloth and the monopulse interpolation is surveyed angle of pitch mode, realizes the three-dimensional coordinates measurement to aerial target.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be solved:
A kind of continuous wave goal directed radar that utilizes three wave beam measurement target comprises emitting antenna, receiving antenna, high-frequency electronic unit, low-frequency electronic unit, luffing mechanism, orientation driving mechanism and computing machine;
Described emitting antenna and receiving antenna are formed array antenna, and wherein, emitting antenna is used to receive by transmitter by transmitting that feeder line is sent here, and will transmit and form shaped-beam to space radiation; Receiving antenna is used to receive the echoed signal that aerial target reflects, and with the echoed signal that receives through the low noise amplifier of its connection amplify, merit deciliter is shaped as three wave beam echoed signals, sends to receiver;
Described high-frequency electronic unit comprises transmitter and receiver, and wherein, transmitter is used for the rf excitation signal that frequency synthesizer is sent is amplified to transmitting of design power, delivers to emitting antenna by feeder line then; Receiver is used for by reception by the echoed signal of three wave beams of receiving antenna transmission and the coherent reference signal that is sent by frequency synthesizer, and these signals are carried out frequency-selecting, low noise amplifier by its connection amplifies, and produces the difference frequency signal of intermediate-freuqncy signal and target and sends to signal processor;
The low-frequency electronic unit comprises frequency synthesizer and signal processor, and wherein, frequency synthesizer is used to produce the rf excitation signal of the Frequency point that meets design requirement, and realizes the positive-going sawtooth wave linear FM signal at the frequency sweep state, delivers to transmitter after up-conversion; The 2nd, produce the coherent sampled clock signal meet design requirement and coherent reference signal and it is outputed to receiver;
Signal processor is used for the difference frequency signal of receiving intermediate frequency signal and target, obtains the information such as distance, height and the elevation angle of target after treatment, and target information sent to controls computing machine;
Described computing machine is used for the target information of received signal processor transmission and carries out the signal Processing computing, sets up targetpath, display-object information and export target information; Finish control simultaneously to other each modules;
Described orientation driving mechanism is used to drive luffing mechanism to be finished emitting antenna, receiving antenna, high-frequency electronic whole unit is scanned;
Described luffing mechanism is the mechanical mechanism that is used to adjust the luffing angle of the parts that are mounted thereon;
The installation and the annexation of above-mentioned each parts are as follows: fixedly connected with the high-frequency electronic unit in middle part, the described aerial array back side; Described high-frequency electronic unit is installed on the luffing mechanism, and luffing mechanism is connected with the orientation driving mechanism; The integral body that array antenna, high-frequency electronic unit and luffing mechanism are formed under the driving of orientation driving mechanism in the horizontal direction 360 degree be synchronized with the movement; Described low-frequency electronic unit and computing machine all place driving mechanism below, orientation; Described transmitter is connected by signal cable with frequency synthesizer, emitting antenna respectively, and receiver is connected by signal cable with frequency synthesizer, receiving antenna and signal processor respectively; The output terminal of signal processor connects computing machine by signal cable; Computing machine connects transmitter, frequency synthesizer and orientation driving mechanism.
The utility model also comprises following other technologies feature:
Described emitting antenna adopts the waveguide array antenna.
Described receiving antenna adopts the waveguide array antenna, and its multi-port network has three output ports: port A, port B and port C.
Described receiver adopts superhet, and frequency sampling adopts if sampling.
Compare with existing radar system, advantage of the present utility model is as follows:
(1) radar of the present utility model adopts continuous wave three wave beam systems, it is little to have emissive power, frequency and adjustable power, in the ECM environment of complexity, has the low antijamming capability of intercepting and capturing, it is wide to have the pitch orientation beam coverage, the angle measurement scope is bigger, has the elevation angle and the high technical advantage of height measuring accuracy.
(2) the utility model is not introduced the phase information of receiving cable in the measurement of elevation process, only utilizes the amplitude of signal, thereby has reduced the difficulty of receiving cable design.
(3) the utility model volume is little in light weight, can be portable, and convenient motor-driven use, and realize that simply hardware cost is low.
Description of drawings
Fig. 1 is the structured flowchart of the continuous wave goal directed radar of employing three wave beam measurement target of the present utility model.
Fig. 2 is the theory diagram of the continuous wave goal directed radar of employing three wave beam measurement target of the present utility model.
Fig. 3 is the composition structured flowchart of receiver.
Fig. 4 is continuous wave three wave beam measurement of elevation block diagrams.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1 and Figure 2, continuous wave goal directed radar of the present utility model comprises emitting antenna, receiving antenna, high-frequency electronic unit, low-frequency electronic unit, luffing mechanism, orientation driving mechanism and computing machine;
Described emitting antenna and receiving antenna are formed array antenna, wherein:
Emitting antenna is used to receive by transmitter by transmitting that feeder line is sent here, and will transmit and form shaped-beam to space radiation.In the present embodiment, emitting antenna adopts the waveguide array antenna, presses the figuration design, makes antenna form cosecant square characteristic at pitching face by the phase place of adjusting between each waveguide.
Receiving antenna is used to receive the echoed signal that aerial target reflects, and with the echoed signal that receives through the low noise amplifier of its connection amplify, the synthetic three wave beam echoed signals that form of little band power division network, this three wave beams echoed signal branch three tunnel that overlaps up and down outputs to three road interfaces of receiver respectively.In the present embodiment, receiving antenna adopts the waveguide array antenna, and its multi-port network has three output ports: port A, port B and port C.The feeding network of receiving antenna utilizes multi-port network to be connected with waveguide array, to reduce the version of power attenuation and simplification feeding network.The echo that the gap waveguide of antenna array receives is delivered to A, B, C No. three receivers by multi-port network, and the gap waveguide of antenna array is determined by the pitching beam angle.
Described high-frequency electronic unit comprises transmitter and receiver, wherein:
Transmitter is used for the rf excitation signal that frequency synthesizer is sent is amplified to transmitting of design power, and this power is adjustable between the design objective scope, delivers to emitting antenna by feeder line then.In the present embodiment, transmitter is amplified rf excitation signal by the level Four microwave concatenated power amplifier of the microwave amplification link of self.
Receiver is used for by reception by the echoed signal of three wave beams of receiving antenna transmission and the coherent reference signal that is sent by frequency synthesizer, and these signals are carried out frequency-selecting, filtering produces the difference frequency signal of intermediate-freuqncy signal and target and sends to signal processor and carries out the if sampling processing.As shown in Figure 3, receiver is made up of No. three receiving circuits, local oscillation circuit, radio frequency analog circuit, power supply and BITE circuit, and wherein, No. three receiving circuits are respectively A road receiving circuit, B road receiving circuit and C road receiving circuit; Local oscillation circuit connects No. three receiving circuits, and the radio frequency analog circuit connects receiving antenna, and power supply connects other circuit by the BITE circuit.Microwave receiver adopts superhet, and (traditional signal waveform of launching in continuous wave radar generally adopts Continuous Wave with frequency modulation, receiver generally adopts beat-frequency detection, just local oscillation signal with transmit identical, perhaps directly the coupling part energy is as local oscillation signal from transmitting, and the shortcoming of this receiver is that dynamic range is little).And present embodiment adopts superhet, the high intermediate frequency because the local oscillation signal ratio of superhet transmits, and this signal can equal the signal of intermediate frequency with a part that transmits and frequency, carries out single sideband mixing and produces local oscillation signal.The echoed signal of three wave beams produces intermediate-freuqncy signal by frequency mixer and local oscillation signal down coversion respectively, undertaken after intermediate frequency amplifies by intermediate frequency amplifier, carry out matched filtering by wave filter, extract intermediate-freuqncy signal by the design frequency, produce I, Q baseband signal after the quadrature demodulation, this I, Q baseband signal are converted to digital quantity by A/D converter send to signal processor and carry out if sampling and handle.
The low-frequency electronic unit comprises frequency synthesizer and signal processor, wherein:
Two effects of frequency synthesizer: the one, be used to produce the rf excitation signal of the Frequency point that meets design requirement, realize the positive-going sawtooth wave linear FM signal at the frequency sweep state, after up-conversion, deliver to the transmitter amplifier chain; The 2nd, produce the coherent sampled clock signal meet design requirement and coherent reference signal and it is outputed to receiver.In the present embodiment, frequency synthesizer is by the crystal oscillator generation reference frequency signal of himself, through frequency multiplier reference frequency is carried out frequency multiplication, and a part of signal produces linear FM signal and output to the transmitter amplifier chain by feeder line after up-conversion.Another part signal is delivered to digital synthesizer (DDS) generation linear frequency modulation reference signal and is outputed to receiver.
Signal processor is used for the difference frequency signal of receiving intermediate frequency signal and target, and the information of finishing the echo target detects: specifically be the analog-to-digital conversion (A/D) of finishing signal by signal processing chip; Time/frequency inverted; Moving-target is handled; Ask mould to reach and the difference normalizing; CFAR CFAR; Range observation; Measurement of bearing; Measurement of elevation.Handled result is carried out automatic threshold judgement behind CFAR (CFAR), obtain the information such as distance, height and the elevation angle of target, and target information sent to control computing machine.
Described computing machine is used for the target information of received signal processor transmission and carries out the signal Processing computing, sets up targetpath, display-object information and export target information.Finish control simultaneously to other each modules.
Described orientation driving mechanism be used to drive luffing mechanism finish to emitting antenna, receiving antenna, high-frequency electronic whole unit carry out 360 the degree scan.The orientation driving mechanism can adopt motor.
Described luffing mechanism is the mechanical mechanism that is used to adjust the luffing angle of the parts that are mounted thereon.Luffing mechanism can adopt the gear that is connected with motor, and be connected with gear vertically, two turning axles of horizontal direction, the emitting antenna, receiving antenna, the high-frequency electronic unit that drive on the erecting frame by two turning axles of motor-driven gear transmission carry out omnibearing movable.
The installation and the annexation of above-mentioned each parts of the present utility model are as follows:
Fixedly connected with the high-frequency electronic unit in middle part, the described aerial array back side; Closely being connected with of high-frequency electronic unit and aerial array is beneficial to and reduces the high-frequency signal decay, improves radar power and measuring accuracy.Described high-frequency electronic unit is installed on the luffing mechanism, and luffing mechanism is connected with the orientation driving mechanism; The integral body that array antenna, high-frequency electronic unit and luffing mechanism are formed is moved in company with luffing mechanism under the driving of orientation driving mechanism; Keep antenna launching beam and received beam to point to during installation and satisfy design elevation angle requirement, guarantee in the coverage that transmits and receives wave beam of pitch orientation to sky with horizontal direction; Described low-frequency electronic unit and computing machine all place driving mechanism below, orientation, help alleviating the orientation and drive load, improve reliability of radar.Described transmitter is connected by signal cable with frequency synthesizer, emitting antenna respectively, and receiver is connected by signal cable with frequency synthesizer, receiving antenna and signal processor respectively; The output terminal of signal processor connects computing machine by signal cable.Computing machine connects transmitter, frequency synthesizer, orientation driving mechanism.
As shown in Figure 2, the overall work principle of the utility model radar is as follows:
Produce rf excitation signal by frequency synthesizer, after transmitter amplifies, deliver to emitting antenna by feeder line, spend under the horizontal directions driving 360 through the orientation driving mechanism by emitting antenna, to space 360 degree horizontal direction radiation, receive the echoed signal that reflects by aerial target by receiving antenna simultaneously, amplify through low noise amplifier, merit deciliter is shaped as three wave beam echoed signals, send three road interfaces of receiver to by 3 delivery outlets by receiving antenna Duo Kou networking, by receiver by carrying out frequency-selecting to three wave beam echoed signals with by the coherent reference signal that frequency synthesizer is sent into, amplify, produce the difference frequency signal of intermediate-freuqncy signal and target, send signal processor to and carry out the if sampling processing, the distance of target, height and elevation information are handled, by signal processor the target information of handling is sent into and to be controlled computing machine and carry out the signal Processing computing, set up targetpath, display-object information and to command system export target information.
What each parts of the present utility model all adopted is conventional device.
The utility model utilization is surveyed high principle than the width of cloth, in the pitching face of receiving antenna array, generate three wave beams: go up wave beam, middle wave beam and following wave beam, wherein, last wave beam and middle wave beam are mirror image distribution dualbeam, intermediate wave and following wave beam also are mirror image distribution dualbeam, and every pair of dualbeam has certain angle of departure up and down, and dualbeam intersects at the 3dB point, wave beam produces bore utilization factor height by the reception front of same bore.
The target elevation measuring process as shown in Figure 4, the signal of receiving antenna is connected to A road receiver from multi-port network, the port A of multi-port network 1, port B are connected No. three receivers respectively with port C, in the design and installation of receiver, answer the length of the connection waveguide of strict guarantee three tunnel and cable consistent, receiver adopts superhet, the three wave beam echoed signals that No. three receiving circuits are received are respectively through amplifying mixing, become intermediate frequency, each produces I, Q baseband signal to dualbeam after filtering, amplification, quadrature demodulation, this I, Q baseband signal are handled.
I, Q baseband signal convert digital quantity to by A/D, ask modular arithmetic in signal processing module, and utilize combiner to obtain orientation values, are the address then with the orientation values, obtain the numerical value at the elevation angle from monopulse table or fitting of a polynomial;
Target elevation and height measuring process by A road and B road dualbeam are as follows:
The mould value on A road
With B road mould value
Ask the mould formula as follows:
In the formula, I
1It is the sinusoidal component of the 1 tunnel output;
Q
1It is the cosine component of the 1 tunnel output;
I
2It is the sinusoidal component of the 2 tunnel output;
I
2It is the cosine component of the 2 tunnel output;
The mould value of output
With
Delivering to combiner asks by following formula and asks for orientation values D:
Orientation values D is the directed factor in the normalized elevation angle, when
The time, D=0,
The time, D be on the occasion of,
The time, D is a negative value; Normalization is just meaned orientation values D with the influence of distance distance and target sizes, and it only is the function of target incident angle with respect to the electrical boresight of antenna;
The monopulse table can be based on orientation values that actual measurement produces and with respect to the function table of the pitching fleet angle of electric axis, the function of the antenna beam pattern of utilization actual measurement is directly made the monopulse table and can be obtained than degree of precision, and the funtcional relationship of elevation angle angle measurement can be represented by the formula:
ε＝θ
A+θ
C+f
θ(D)（4）
In the formula: f
θ(D) be the funtcional relationship at the orientation values and the elevation angle, i.e. the monopulse table;
θ
AThe elevation angle that antenna is installed;
θ
CThe sensing angle of electric axis;
ε is a target elevation.
If to the angle measurement accuracy at the elevation angle when less demanding, the corresponding data of orientation values and luffing angle or substitute difference monopulse table with algebraic polynomial of " least square method " match;
f
θ(D)＝a+bD+cD
2+dD
3（5）
In the formula, coefficient a, b, c, d is obtained by " least square method ";
With substitution formula (4) as a result, obtain the elevation angle of target, that is:
The calculating of object height: for very in-plant target, the approximate object height that can provide by following formula in the face of land, plane:
h
T＝h
a+R
TSinθ（6）
In the formula: h
aHeight for radar antenna; R
TDistance for measured target; θ is the elevation angle of measured target;
With parabola approximation be:
Wherein: R
0Be earth radius;
The accurate target high computational:
Radar is after measuring the target elevation data, select formula (6)～(8) to separate the height that is counted as target according to the measuring distance of different radars, wherein, close-in target formula (6), distant object is selected formula (8) with formula (7) for use to the target of the true height of remote refinement again.
Target elevation and height measuring process by B road and C road dualbeam are the same with calculating.
Claims (6)
1. a continuous wave goal directed radar is characterized in that, comprises emitting antenna, receiving antenna, high-frequency electronic unit, low-frequency electronic unit, luffing mechanism, orientation driving mechanism and computing machine;
Described emitting antenna and receiving antenna are formed array antenna, and wherein, emitting antenna is used to receive by transmitter by transmitting that feeder line is sent here, and will transmit and form shaped-beam to space radiation; Receiving antenna is used to receive the echoed signal that aerial target reflects, and with the echoed signal that receives through the low noise amplifier of its connection amplify, merit deciliter is shaped as three wave beam echoed signals, sends to receiver;
Described high-frequency electronic unit comprises transmitter and receiver, and wherein, transmitter is used for the rf excitation signal that frequency synthesizer is sent is amplified to transmitting of design power, delivers to emitting antenna by feeder line then; Receiver is used for by reception by the echoed signal of three wave beams of receiving antenna transmission and the coherent reference signal that is sent by frequency synthesizer, and these signals are carried out frequency-selecting, low noise amplifier by its connection amplifies, and produces the difference frequency signal of intermediate-freuqncy signal and target and sends to signal processor;
The low-frequency electronic unit comprises frequency synthesizer and signal processor, and wherein, frequency synthesizer is used to produce the rf excitation signal of the Frequency point that meets design requirement, and realizes the positive-going sawtooth wave linear FM signal at the frequency sweep state, delivers to transmitter after up-conversion; The 2nd, produce the coherent sampled clock signal meet design requirement and coherent reference signal and it is outputed to receiver;
Signal processor is used for the difference frequency signal of receiving intermediate frequency signal and target, obtains the information such as distance, height and the elevation angle of target after treatment, and target information sent to controls computing machine;
Described computing machine is used for the target information of received signal processor transmission and carries out the signal Processing computing, sets up targetpath, display-object information and export target information; Finish control simultaneously to other each modules;
Described orientation driving mechanism is used to drive luffing mechanism to be finished emitting antenna, receiving antenna, high-frequency electronic whole unit is scanned;
Described luffing mechanism is the mechanical mechanism that is used to adjust the luffing angle of the parts that are mounted thereon;
The installation and the annexation of above-mentioned each parts of the present utility model are as follows:
Fixedly connected with the high-frequency electronic unit in middle part, the described aerial array back side; Described high-frequency electronic unit is installed on the luffing mechanism, and luffing mechanism is connected with the orientation driving mechanism; The integral body that array antenna, high-frequency electronic unit and luffing mechanism are formed is moved in company with luffing mechanism under the driving of orientation driving mechanism; Described low-frequency electronic unit and computing machine all place driving mechanism below, orientation; Described transmitter is connected by signal cable with frequency synthesizer, emitting antenna respectively, and receiver is connected by signal cable with frequency synthesizer, receiving antenna and signal processor respectively; The output terminal of signal processor connects computing machine by signal cable; Computing machine connects transmitter, frequency synthesizer and orientation driving mechanism.
2. continuous wave goal directed radar as claimed in claim 1 is characterized in that, described emitting antenna adopts the waveguide array antenna.
3. continuous wave goal directed radar as claimed in claim 1 is characterized in that, described receiving antenna adopts the waveguide array antenna, and its multi-port network has three output ports: port A, port B and port C.
4. continuous wave goal directed radar as claimed in claim 1 is characterized in that, described receiver adopts superhet, and frequency sampling adopts if sampling.
5. continuous wave goal directed radar as claimed in claim 1 is characterized in that described high-frequency electronic unit is installed on the luffing mechanism.
6. continuous wave goal directed radar as claimed in claim 1 is characterized in that described low-frequency electronic unit is placed under the orientation driving mechanism.
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| CN 201220725671 CN203084190U (en) | 2012-12-25 | 2012-12-25 | Continuous-wave target guiding radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220725671 CN203084190U (en) | 2012-12-25 | 2012-12-25 | Continuous-wave target guiding radar |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064080A (en) * | 2012-12-25 | 2013-04-24 | 西安天伟电子系统工程有限公司 | Target guiding radar with continuous waves |
| CN103995261A (en) * | 2014-05-23 | 2014-08-20 | 广东电网公司电力科学研究院 | Target signal processing device of unmanned aerial vehicle evadible system and unmanned aerial vehicle evadible system |
| TWI586987B (en) * | 2016-12-22 | 2017-06-11 | Nat Chung-Shan Inst Of Science And Tech | Signal processing device for continuous wave radar sensing system |
| CN108398677A (en) * | 2018-04-25 | 2018-08-14 | 零八电子集团有限公司 | The three one-dimensional phases of coordinate continuous wave sweep unmanned plane low target detecting system |
| CN108419585A (en) * | 2018-06-01 | 2018-08-21 | 西安华腾微波有限责任公司 | A kind of device of automation Weather modification operation |
-
2012
- 2012-12-25 CN CN 201220725671 patent/CN203084190U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064080A (en) * | 2012-12-25 | 2013-04-24 | 西安天伟电子系统工程有限公司 | Target guiding radar with continuous waves |
| CN103064080B (en) * | 2012-12-25 | 2015-04-29 | 西安天伟电子系统工程有限公司 | Target guiding radar with continuous waves |
| CN103995261A (en) * | 2014-05-23 | 2014-08-20 | 广东电网公司电力科学研究院 | Target signal processing device of unmanned aerial vehicle evadible system and unmanned aerial vehicle evadible system |
| TWI586987B (en) * | 2016-12-22 | 2017-06-11 | Nat Chung-Shan Inst Of Science And Tech | Signal processing device for continuous wave radar sensing system |
| CN108398677A (en) * | 2018-04-25 | 2018-08-14 | 零八电子集团有限公司 | The three one-dimensional phases of coordinate continuous wave sweep unmanned plane low target detecting system |
| CN108419585A (en) * | 2018-06-01 | 2018-08-21 | 西安华腾微波有限责任公司 | A kind of device of automation Weather modification operation |
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