CN205539459U - Low -power radio frequency unit, and adopt its aerial reconnaissance analog device - Google Patents
Low -power radio frequency unit, and adopt its aerial reconnaissance analog device Download PDFInfo
- Publication number
- CN205539459U CN205539459U CN201620186956.XU CN201620186956U CN205539459U CN 205539459 U CN205539459 U CN 205539459U CN 201620186956 U CN201620186956 U CN 201620186956U CN 205539459 U CN205539459 U CN 205539459U
- Authority
- CN
- China
- Prior art keywords
- unit
- module
- radio frequency
- band
- power radio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004088 simulation Methods 0.000 claims abstract description 22
- 230000010355 oscillation Effects 0.000 claims description 29
- 230000005284 excitation Effects 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000002592 echocardiography Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model provides a low -power radio frequency unit, and adopt its aerial reconnaissance analog device. A low -power radio frequency unit produces module, local oscillator module, simulation transceiver module, digital transceiver module, servo controller and power module by the clock and constitutes, the aerial reconnaissance analog device is equipped with and synthesizes electronic unit, antenna element, inertial navigation device cell, profitable technological effect: the utility model provides a can load low -power radio frequency unit in the aircraft, that can provide SAR analog signal. Overcome china and only load the SAR detection device's on ground surveys the car shortcoming at present. A way of new SAR analog signal source is provided.
Description
Technical Field
The utility model relates to a signal simulation technical field and synthetic aperture radar field especially relate to satellite-borne/airborne SAR analog equipment, specifically are a low-power radio frequency unit and adopt its aerial reconnaissance analog equipment.
Background
The synthetic aperture radar has the advantages of all weather, all-day time, long distance, wide swath and the like as an active microwave imaging radar, can overcome the limitation of cloud, fog, rain, snow and night conditions, and is widely applied to the field of military reconnaissance. The very famous radar imaging reconnaissance satellite of the long hockey type in the United states has multiple working frequencies, multiple polarization modes and multiple incidence angles, has ground resolution of 0.3-1 meter, and can detect underground hidden targets. In the military operation of the south alliance attacked by the air in the north, the north uses two 'lacrosse' radar imaging reconnaissance satellites to carry out reconnaissance under the severe weather condition, the synthetic aperture radar on the satellite tracks the activities of ships and armored vehicles in the south alliance, the movement direction of air missiles is distinguished, disguised weapons and fake targets can be found, even important military facilities with the depth of several meters underground can be found through the dry ground surface, and the important military facilities play an important role in war.
The reconnaissance threat of foreign satellite-borne/airborne SAR reconnaissance systems to military facilities in China is increasingly strengthened, and new challenges are brought to the camouflage defense capability of the military facilities in China. Aiming at the research of a typical SAR reconnaissance system abroad, a simulation object simulation system is developed to evaluate the camouflage and reconnaissance effect, the research and confrontation capacity of the camouflage technology of our army is improved in a targeted manner, and the method has important military significance. The simulation physical simulation system can improve the intuitive understanding of our army to the SAR reconnaissance satellite, check the existing SAR camouflage technology level and the camouflage effect of our army, can pertinently promote the development of our army to the SAR reconnaissance camouflage technology level, and can promote the informatization construction level of our army.
However, domestic camouflage survey equipment aiming at SAR reconnaissance is relatively short, and mainly takes a ground survey vehicle as a main part. The ground survey vehicle is provided with the real-aperture radar, the resolution ratio is low, the survey effect is poor, the ground survey vehicle cannot comprehensively simulate the reconnaissance effect and the threat environment of the SAR in a vivid way, the accurate effect evaluation result cannot be provided, and the requirement of information condition guarantee construction of our army cannot be met.
In conclusion, the SAR reconnaissance simulation equipment capable of being installed on the airplane is provided, the airplane loaded with the simulated SAR equipment flies at high altitude, and the SAR simulation signals are transmitted to the bottom surface and recorded, so that the SAR reconnaissance simulation equipment has positive significance for testing the camouflage defense capability and the camouflage effect of military facilities in China.
SUMMERY OF THE UTILITY MODEL
To above-mentioned problem and demand, the utility model provides a low-power radio frequency unit and adopt its aerial reconnaissance analog device provides one and can be used in the low-power radio frequency unit on the aircraft to SAR reconnaissance system's characteristics, provides SAR analog signal. And based on the low-power radio frequency unit, a set of aerial reconnaissance simulation equipment is provided.
The utility model discloses specifically as follows:
a low-power radio frequency unit is composed of a clock generation module 11, a local oscillator module 12, an analog transceiver module 13, a digital transceiver module 14, a servo controller 15 and a power supply module 16.
The power module 16 is respectively connected with the clock generation module 11, the local oscillator module 12, the analog transceiver module 13, the digital transceiver module 14 and the servo controller 15 for supplying power.
The clock generation module 11 is respectively connected with the local oscillation module 12 and the digital transceiver module 14. The clock generation module 11 provides clock signals for the local oscillation module 12 and the digital transceiver module 14.
The local oscillation module 12 is connected to the analog transceiver module 13. The local oscillation module 12 provides a local oscillation signal to the analog transceiver module 13. The local oscillation signal comprises a demodulation local oscillation signal and a frequency conversion local oscillation signal.
The analog transceiver module 13 is connected to the digital transceiver module 14.
Adopt low-power radio frequency unit's aerial reconnaissance analog device, be equipped with and synthesize electronic unit 2, antenna element 3, inertial navigation equipment unit 4.
The integrated electronic unit 2, the antenna unit 3 and the inertial navigation equipment unit 4 are all connected with a low-power radio frequency unit.
Wherein, the integrated electronic unit 2 receives and stores the digital echo signal generated by the low-power radio frequency unit.
The antenna unit 3 receives and transmits the X/L excitation signal generated by the power radio frequency unit. The antenna unit 3 transmits the received X/L echo signal to the power radio frequency unit.
The inertial navigation device unit 4 transmits the received attitude data and GPS data to the low power radio frequency unit.
Advantageous technical effects
The utility model provides a set of can load in the aircraft, can provide SAR analog signal's low-power radio frequency unit. The defect that only SAR detection devices loaded on ground survey vehicles are available in China at present is overcome. A new SAR analog signal source approach is provided.
Further, the utility model provides an adopt low-power radio frequency unit's aerial reconnaissance analog device provides one by aircraft machine carries low-power radio frequency unit to bottom surface directional radiation SAR analog signal to SAR reconnaissance system's characteristics. And based on the low-power radio frequency unit, a set of aerial reconnaissance simulation equipment is provided.
An aerial reconnaissance simulation device comprises a low-power radio frequency unit, an integrated electronic unit, an antenna, a stable platform unit and inertial navigation equipment, wherein the low-power radio frequency unit can generate and receive radio frequency signals of an X wave band and an L wave band, the integrated electronic unit is connected with the low-power radio frequency unit and can record original echoes and generate SAR images at the same time, the antenna and the stable platform unit are connected with the low-power radio frequency unit, and the inertial navigation equipment is connected with the low. The device is loaded on a platform of an unmanned or unmanned helicopter, can acquire SAR images and full-polarization original echo data similar to foreign typical signal satellite-borne SAR indexes in real time, and can be used for simulating the imaging effect of a typical signal satellite-borne SAR.
Further, the aerial reconnaissance simulation equipment also comprises a graphic workstation which can be connected with the integrated electronic unit, and under the action of the echo data dump, the original echo is dumped into the graphic workstation for post high-precision processing to obtain high-resolution and four kinds of polarized SAR image data.
Furthermore, the low-power radio frequency unit comprises a clock generation module, a local oscillator module, an analog transceiver module, a digital transceiver module, a servo controller and a power supply module. The clock generation module provides clock signals for the local oscillator module and the digital receiving and transmitting module. The local oscillation module provides each local oscillation signal for the analog receiving and transmitting module, including demodulation local oscillation and frequency conversion local oscillation signal. The servo controller controls the rotation of the rotary table. The power module supplies power to the whole system.
Furthermore, the analog transceiver module comprises a dual-band excitation channel, a dual-band receiving channel, a switch filter and a demodulator.
And the two-waveband excitation channel generates a radio frequency signal with a designated bandwidth of an L waveband through frequency conversion and filtering. And generating a radio frequency signal with specified bandwidth of an X wave band through filtering, frequency multiplication and frequency mixing.
The dual-band receiving channel respectively mixes the L-band echo signal and the X-band echo signal to an S-band.
The switch filter carries out filtering processing on signals with different bandwidths.
The demodulator demodulates the filtered S-band signal into two paths of analog I, Q.
Drawings
Fig. 1 is a schematic diagram of the low-and-medium-power rf unit according to the present invention.
Fig. 2 is a schematic diagram of an analog transceiver module in the low power rf unit shown in fig. 1.
Fig. 3 is a schematic diagram of an aerial reconnaissance simulation apparatus using the low power radio frequency unit shown in fig. 1.
In the figure: the system comprises a 1-low-power radio frequency unit, a 2-integrated electronic unit, a 3-antenna and stable platform unit, a 4-combined inertial navigation device, a 5-graphic workstation, a 11-clock generation module, a 12-local oscillator module, a 13-analog transceiver module, a 14-digital transceiver module, a 15-servo controller, a 16-power module, a 131-dual-band excitation channel, a 132-dual-band receiving channel, a 133-switch filter and a 134-demodulator.
Detailed Description
The technical solution of the present invention will be further explained with reference to the drawings of the present invention.
Referring to fig. 1, a low power rf unit is composed of a clock generation module 11, a local oscillator module 12, an analog transceiver module 13, a digital transceiver module 14, a servo controller 15, and a power supply module 16.
The power module 16 is respectively connected with the clock generation module 11, the local oscillator module 12, the analog transceiver module 13, the digital transceiver module 14 and the servo controller 15 for supplying power.
The clock generation module 11 is respectively connected with the local oscillation module 12 and the digital transceiver module 14. The clock generation module 11 provides clock signals for the local oscillation module 12 and the digital transceiver module 14.
The local oscillation module 12 is connected to the analog transceiver module 13. The local oscillation module 12 provides a local oscillation signal to the analog transceiver module 13. The local oscillation signal comprises a demodulation local oscillation signal and a frequency conversion local oscillation signal.
The analog transceiver module 13 is connected to the digital transceiver module 14.
Referring to fig. 2, the analog transceiver module 13 further includes a dual-band excitation channel 131, a dual-band reception channel 132, a switching filter 133, and a demodulator 134. Wherein,
the dual-band reception channel 132, the switching filter 133, and the demodulator 134 are connected in series in this order. The input of the dual band receive path 132 is the X/L echo input and the output of the demodulator 134 is the I and O outputs.
The input of the dual-band excitation channel 131 is the DA waveform input and the output of the dual-band excitation channel 131 is the X/L excitation output.
Referring to fig. 2, the dual-band excitation channel 131 is further frequency converted and filtered to generate an L-band rf signal. Meanwhile, the dual-band excitation channel 131 generates an X-band radio frequency signal through filtering, frequency doubling and frequency mixing.
The dual-band receiving channel 132 mixes the received echo signals of the L band and the X band respectively to obtain mixed S-band signals.
The switching filter 133 filters the received and mixed S-band signal to obtain a filtered S-band signal.
The demodulator 134 demodulates the received filtered S-band signal into two analog signals. The two paths of analog signals are an I path of analog signal and a Q path of analog signal respectively.
Referring to fig. 3, further, there are provided an integrated electronic unit 2, an antenna unit 3, and an inertial navigation device unit 4.
The integrated electronic unit 2, the antenna unit 3 and the inertial navigation equipment unit 4 are all connected with a low-power radio frequency unit.
Wherein, the integrated electronic unit 2 receives and stores the digital echo signal generated by the low-power radio frequency unit.
The antenna unit 3 receives and transmits the X/L excitation signal generated by the power radio frequency unit. The antenna unit 3 transmits the received X/L echo signal to the power radio frequency unit.
The inertial navigation device unit 4 transmits the received attitude data and GPS data to the low power radio frequency unit.
Furthermore, the integrated electronic unit 2, the antenna unit 3 and the inertial navigation device unit 4 are respectively connected with the power module 16 and get electricity.
The integrated electronic unit 2 is connected to a digital transceiver module 14.
The antenna unit 3 is connected to an analog transceiver module 13.
The inertial navigation device unit 4 is connected to the servo controller 15.
Further, the integrated electronic unit 2 includes an interface board and a recorder. The recorder is connected to the digital transceiver module 14 via an interface board. The digital echoes of the digital transceiver module 14 are recorded by the recorder.
Further, the antenna unit 3 includes an X-band antenna and an L-band antenna. The radio frequency signals output by the low-power radio frequency unit are subjected to directional radiation of radar electromagnetic waves by the X-band antenna and the L-band antenna. Meanwhile, the X-band antenna and the L-band antenna receive ground object echoes and transmit the ground object echoes to the low-power radio frequency unit.
Furthermore, the inertial navigation device unit 4 includes an inertial navigation host and a GPS antenna, the inertial navigation host acquires attitude data of the carrier in real time, and the GPS antenna acquires GPS information.
The attitude data and the GPS information are output to the servo controller 15 of the low power radio frequency unit.
Further, a signal processing board is provided in the integrated electronic unit 2. The signal processing board processes the digital echo of the digital transceiver module 14 to generate an SAR image. At the end of the integrated electronic unit 2 a graphics workstation 5 is connected.
Furthermore, the low-power radio frequency unit, the integrated electronic unit 2 and the inertial navigation device unit 4 are all arranged inside a device cabin of the airplane. The antenna unit 3 is arranged in the radar compartment of the aircraft or outside the fuselage of the aircraft.
The antenna unit 4 is assembled outside a cabin of a manned or unmanned helicopter platform, and the low-power radio frequency unit 1, the integrated electronic unit 2 and the combined inertial navigation equipment 3 are assembled in the cabin. The units, the units and the carrier are connected with each other through cables. The method can acquire the full-polarization original echo data in real time, and further can be used for simulating the imaging effect of a typical signal satellite-borne SAR.
The integrated electronic unit 2 can be connected with a graphic workstation 5, and dumps the original echo into the graphic workstation 5 under the action of the echo data dump, and then carries out high-precision processing to obtain high-resolution and four kinds of polarized SAR image data.
The clock generating module 11 provides a local oscillator module with a 20M reference clock, and the clock generating module 11 provides a digital transceiver module with a 20M reference clock, a waveform generating clock and a collecting clock. The local oscillation module provides each local oscillation signal for the analog receiving and transmitting module, including demodulation local oscillation and frequency conversion local oscillation signal. The servo controller 15 controls the rotation of the turntable. The power module 16 provides power to the entire system.
To sum up, the utility model discloses can produce and receive X wave band and L wave band radio frequency signal, generate baseband digital signal's low-power radio frequency unit, can carry out record and formation of image processing to baseband digital signal, generate synthetic electronic unit of SAR image, can launch and receive two wave band radiation signal's antenna, can fix antenna and the stable platform unit on two-dimensional servo revolving stage, can provide the inertial navigation equipment of high accuracy carrier attitude signal and GPS data.
The utility model discloses can load on unmanned helicopter or the manned platform for obtain high resolution X wave band and the original echo data of four polarization high resolution of L wave band synthetic aperture radar reconnaissance full polarization image and experimental target, can extensively be used for civilian fields such as military SAR reconnaissance detection application or calamity aassessment, topography survey.
Claims (10)
1. A low power radio frequency unit, characterized by: the system comprises a clock generation module (11), a local oscillator module (12), an analog transceiver module (13), a digital transceiver module (14), a servo controller (15) and a power supply module (16);
the power supply module (16) is respectively connected with the clock generation module (11), the local oscillator module (12), the analog transceiver module (13), the digital transceiver module (14) and the servo controller (15) and supplies power;
the clock generation module (11) is respectively connected with the local oscillator module (12) and the digital transceiving module (14); the clock generation module (11) provides clock signals for the local oscillator module (12) and the digital transceiving module (14);
the local oscillator module (12) is connected with the analog transceiver module (13); the local oscillation module (12) provides a local oscillation signal for the analog transceiver module (13); the local oscillation signal comprises a demodulation local oscillation signal and a frequency conversion local oscillation signal;
the analog transceiver module (13) is connected with the digital transceiver module (14).
2. A low power radio frequency unit according to claim 1, wherein: the analog transceiver module (13) comprises a dual-band excitation channel (131), a dual-band receiving channel (132), a switch filter (133) and a demodulator (134); wherein,
the dual-band receiving channel (132), the switch filter (133) and the demodulator (134) are connected in series in sequence; the input end of the dual-band receiving channel (132) is an X/L echo input end, and the output end of the demodulator (134) is an I-path output end and an O-path output end; the input end of the dual-band excitation channel (131) is a DA waveform input end, and the output end of the dual-band excitation channel (131) is an X/L excitation output end.
3. A low power radio frequency unit according to claim 2, characterized in that:
the dual-waveband excitation channel (131) generates an L-waveband radio-frequency signal through frequency conversion and filtering; meanwhile, the dual-band excitation channel (131) generates a radio frequency signal of an X band through filtering, frequency multiplication and frequency mixing;
the double-waveband receiving channel (132) respectively mixes the received L-waveband echo signals and the received X-waveband echo signals to obtain mixed S-waveband signals;
the switch filter (133) filters the received and mixed S-band signal to obtain a filtered S-band signal;
the demodulator (134) demodulates the received and filtered S-band signals into two paths of analog signals; the two paths of analog signals are an I path of analog signal and a Q path of analog signal respectively.
4. Airborne reconnaissance simulation device employing a low power radio frequency unit as claimed in claim 1, 2 or 3, characterized in that:
the device is provided with a comprehensive electronic unit (2), an antenna unit (3) and an inertial navigation equipment unit (4);
the integrated electronic unit (2), the antenna unit (3) and the inertial navigation equipment unit (4) are all connected with the low-power radio frequency unit;
wherein, the integrated electronic unit (2) receives and stores the digital echo signal generated by the low-power radio frequency unit;
The antenna unit (3) receives and transmits the X/L excitation signal generated by the power radio frequency unit; the antenna unit (3) transmits the received X/L echo signal to the power radio frequency unit;
the inertial navigation equipment unit (4) transmits the received attitude data and GPS data to the low-power radio frequency unit.
5. The aerial reconnaissance simulation device of claim 4, wherein:
the integrated electronic unit (2), the antenna unit (3) and the inertial navigation equipment unit (4) are respectively connected with the power module (16) and get electricity;
the integrated electronic unit (2) is connected with the digital transceiving module (14);
the antenna unit (3) is connected with the analog transceiving module (13);
the inertial navigation equipment unit (4) is connected with a servo controller (15).
6. The aerial reconnaissance simulation device of claim 5, wherein:
the integrated electronic unit (2) comprises an interface board and a recorder; the recorder is connected with the digital transceiver module (14) through an interface board; the digital echo of the digital transceiver module (14) is recorded by a recorder.
7. The aerial reconnaissance simulation device of claim 5, wherein:
the antenna unit (3) comprises an X-band antenna and an L-band antenna; the X-band antenna and the L-band antenna perform directional radiation of radar electromagnetic waves on radio frequency signals output by the low-power radio frequency unit; meanwhile, the X-band antenna and the L-band antenna receive ground object echoes and transmit the ground object echoes to the low-power radio frequency unit.
8. The aerial reconnaissance simulation device of claim 5, wherein:
the inertial navigation equipment unit (4) comprises an inertial navigation host and a GPS antenna, the inertial navigation host acquires attitude data of the aerial carrier in real time, and the GPS antenna acquires GPS information;
the attitude data and the GPS information are output to a servo controller (15) of the low power radio frequency unit.
9. The aerial reconnaissance simulation device of claim 6, wherein:
a signal processing board is arranged in the integrated electronic unit (2); processing the digital echo of the digital transceiver module (14) by a signal processing board to generate an SAR image;
the end of the integrated electronic unit (2) is connected with a graphic workstation (5).
10. The aerial reconnaissance simulation device of claim 4, wherein:
the low-power radio frequency unit, the comprehensive electronic unit (2) and the inertial navigation equipment unit (4) are all arranged in an equipment bin of the airplane; the antenna unit (3) is arranged in a radar cabin of the airplane or outside the fuselage of the airplane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186956.XU CN205539459U (en) | 2016-03-11 | 2016-03-11 | Low -power radio frequency unit, and adopt its aerial reconnaissance analog device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186956.XU CN205539459U (en) | 2016-03-11 | 2016-03-11 | Low -power radio frequency unit, and adopt its aerial reconnaissance analog device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205539459U true CN205539459U (en) | 2016-08-31 |
Family
ID=56782077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620186956.XU Active CN205539459U (en) | 2016-03-11 | 2016-03-11 | Low -power radio frequency unit, and adopt its aerial reconnaissance analog device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205539459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
-
2016
- 2016-03-11 CN CN201620186956.XU patent/CN205539459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164447A (en) * | 2018-09-26 | 2019-01-08 | 安徽博微长安电子有限公司 | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102174058B1 (en) | Target simulator for unmanned aircraft mounted synthetic aperture radar | |
| Koo et al. | A new unmanned aerial vehicle synthetic aperture radar for environmental monitoring | |
| CN107515391A (en) | Full frequency band unmanned plane signal accurately identifies, laterally with alignment system and method | |
| James | A history of radar | |
| CN202221473U (en) | Single-cross-track complete polarization interference synthetic aperture radar | |
| CN102331575A (en) | Single-pass full-polarization interferometric synthetic aperture radar (SAR) | |
| CN104515987A (en) | Millimeter wave unmanned plane recovery guiding apparatus | |
| Chua et al. | The maiden flight of Hinotori-C: The first C band full polarimetric circularly polarized synthetic aperture radar in the world | |
| CN205539459U (en) | Low -power radio frequency unit, and adopt its aerial reconnaissance analog device | |
| Chan et al. | Design and development of a C-band RF transceiver for UAVSAR | |
| Kari et al. | Evolutionary developments of today’s remote sensing radar technology—right from the telemobiloscope: a review | |
| JP2016080710A (en) | Elliptic-circular polarization synthetic aperture radar; and aircraft, artificial satellite, vehicle, fixed terrestrial platform and stratospheric platform loaded therewith | |
| Borisenkov et al. | Bistatic P-band SAR for spacecraft AIST-2 | |
| Unwin et al. | GNSS remote sensing and technology demonstration on TechDemoSat-1 | |
| CN205176270U (en) | Holographic safety inspection appearance system of active microwave | |
| CN112505694B (en) | Space target imaging method of on-orbit SAR satellite | |
| Atkinson et al. | Passive SAR satellite system (PASSAT): First airborne trials | |
| CN103091685A (en) | Space-time cascade anti-interference device based on inertial navigation processing method thereof | |
| CN106342214B (en) | A kind of ionosphere lateral scattering detection method | |
| Sumantyo et al. | Airborne Circularly Polarized SAR: Theory, System Design, Hardware Implementation, and Applications | |
| RU2295742C1 (en) | Aviation meteorological complex of active influencing on clouds | |
| Badjou et al. | Low-Cost, Lightweight UWB Antenna Design for Humanitarian Drone-Launched GPR Surveys | |
| Barott et al. | SABER-TDA: Passive coherent location of aircraft using XM-Radio and a small ground station | |
| Zhu et al. | Research on radar development and application and signal processing technology | |
| Kim et al. | Development and experiment of L-band SAR for ranging and imaging target |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |