CN106483530A - Retrosynthesis aperture laser radar system based on reflective astronomical telescope - Google Patents
Retrosynthesis aperture laser radar system based on reflective astronomical telescope Download PDFInfo
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- CN106483530A CN106483530A CN201610786688.XA CN201610786688A CN106483530A CN 106483530 A CN106483530 A CN 106483530A CN 201610786688 A CN201610786688 A CN 201610786688A CN 106483530 A CN106483530 A CN 106483530A
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
- G01S17/90—Lidar systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/66—Tracking systems using electromagnetic waves other than radio waves
-
- 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
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
Abstract
The invention discloses a kind of retrosynthesis aperture laser radar system based on reflective astronomical telescope, including tunable laser, laser signal emission system, receiving telescope, shrink beam system, photodetector, intermediate frequency amplifier, data acquisition process computer etc.；The pulse modulation laser signal that tunable laser sends expands through laser signal emission system and is transmitted into target；The received telescope of the irreflexive echo-signal of target receives, and is concerned with photodetector surfaces with intrinsic light；Photodetector converts optical signal into the signal of telecommunication, by data acquisition process computer acquisition after amplifying through intermediate frequency amplifier, and rejuvenation target image；System can effectively lift the echo-signal signal to noise ratio that retrosynthesis aperture laser radar receives, and follows the tracks of on a large scale, in high precision, at a high speed target.
Description
Technical field
The present invention relates to a kind of retrosynthesis aperture laser radar system based on reflective astronomical telescope, system is using big
The reflective astronomical telescope of bore, as the receiving system of retrosynthesis aperture laser radar, is effectively increased and receives echo letter
Number signal to noise ratio, enable a system on a large scale, at a high speed, high precision tracking target detected.
Background technology
Retrosynthesis aperture laser Radar Technology is the relative motion of a kind of utilization laser radar and observed object, by multiple
The transmitting same target of identical pulse detection, receives echo-signal and is processed, and calculates and obtains target in laser radar sight line
The active optics detection means of the projected image of plane determined with direction of relative movement.With traditional passive optical imaging mode
Compare, retrosynthesis aperture laser Radar Technology mainly has the advantage that：Systemic resolution will not with target and scope away from
Decay from increase；It is subject to the weather influence such as day-night change, Changes in weather smaller as active observation method.
The light echo power of laser radar is directly proportional to the biquadratic of target range, when therefore distant object being observed,
Heliogram is extremely faint.The bore increasing scope can effectively improve the optical signal intensity receiving.Now inverse
The reception system of Synthetic Aperture Laser Radar typically adopts custom refractive formula optical system, and bore is typically in 20 cm.
Compare and refractor, the reflective astronomical telescope of ground mainly has the advantage that：
1) autocollimator can have the operating distance of longer focal length but very little, makes whole system volume compact；
2) autocollimator does not have aberration completely, will not produce impact to wide bandwidth signals；
3) the ratio of curvature lens required for autocollimator minute surface are much smaller, and this makes system overall weight much smaller,
Coordinate high-precision frame for movement can realize to the imaging of whole sky and follow the tracks of at a high speed target.
Above three promises autocollimator can accomplish the heavy caliber that refractor does not reach.Ground is large-scale
All more than meter level, maximum reaches 10 meters (Hawaii, America keck telescope 10m) very to the bore of reflective astronomical telescope
To tens meters (building European observatory E-ELT telescope 39m), it collects light echo efficiency is the 100 of maximum refractor
Again to 10000 times, receive as the signal of retrosynthesis aperture laser radar hence with the large-scale reflective astronomical telescope of ground
System, being capable of effective lift system signal to noise ratio.
Content of the invention
The technical problem to be solved in the present invention is：Using the reflective astronomical telescope of ground heavy caliber, as retrosynthesis hole
The echo-signal telescope of footpath laser radar system, lifts echo-signal signal to noise ratio, and realizes to target on a large scale, high-precision
Degree, at a high speed tracking.
The present invention solves above-mentioned technical problem and employed technical scheme comprise that：Retrosynthesis hole based on reflective astronomical telescope
Footpath laser radar system, including tunable laser 1, spectroscope 2, laser signal emission system 8, receiving telescope 9, shrink beam system
System 24, light combination mirror 20, photodetector 21, intermediate frequency amplifier 22 data acquisition process computer 23；Laser signal transmitting system
System 8 includes the first reflecting mirror 3, tilting mirror 4, focusing system 5, transmitter-telescope secondary mirror 6, transmitter-telescope primary mirror 7；Focusing system
5, it is the guiding mechanism changing axial spacing between transmitter-telescope secondary mirror 6 and transmitter-telescope primary mirror 7, realize laser signal pair
The focusing of differing heights target；Tunable laser 1 launches tuning pulsed laser signal, through spectroscope 2, the first reflecting mirror 3,
Tilting mirror 4, transmitter-telescope secondary mirror 6 and transmitter-telescope primary mirror 7, irradiate target and produce diffuse-reflectance；Laser signal emission system 8
Being arranged on receiving telescope primary mirror 10 supporting construction sidepiece, realizing mechanical linkage it is ensured that detecting the different angles of pitch and different azimuth
During the target at angle, the optical axis of laser signal emission system 8 remains parallel with the optical axis of reflective receiving telescope system 9；Instead
Penetrate formula receiving telescope system 9 to include reflective receiving telescope primary mirror 10, reflective receiving telescope secondary mirror 11, reflective connect
Receive telescope the 3rd mirror 12, the second reflecting mirror 13, the 3rd reflecting mirror 14, the 4th reflecting mirror 15；Reflective receiving telescope system 9
Can be determined around reflective receiving telescope primary mirror 10, reflective receiving telescope secondary mirror 11, the 4th reflecting mirror 15 center
Axle realizes the rotation at 0 to 360 ° of azimuth, is determined around reflective receiving telescope the 3rd mirror 12, the second reflecting mirror 13 center
Axle realizes the rotation of 0 to 90 ° of the angle of pitch, realizes to target on a large scale, follows the tracks of in high precision, at a high speed；Reflective receiving telescope
System 9 rotates to any angle, keeps constant in the outgoing beam of the 4th reflecting mirror 15；Shrink beam system 24 includes the 5th reflecting mirror
16th, the first off-axis paraboloidal mirror 17, the second off-axis paraboloidal mirror 18 and the 6th reflecting mirror 19；First off-axis paraboloidal mirror 17 and second is from axle
The focus of parabolic lens 18 overlaps, and realizes shrink beam and collimation；By the use of parabola as reflecting surface, extra off-axis aberration will not be introduced
And aberration；Tunable laser 1 launches tuning pulsed laser signal, and through spectroscope 2 beam splitting, small part light transmission is as intrinsic
Light, most of light is reflected into laser signal emission system 8；Reflect through the first reflecting mirror 3, tilting mirror 4, by transmitter-telescope
It is emitted into free space after mirror 6, transmitter-telescope primary mirror 7 beam-expanding collimation, be radiated at target surface and diffuse-reflectance occurs；Target is returned
Ripple signal is received by reflective receiving telescope system 9, passes sequentially through reflective receiving telescope primary mirror 10, reflective reception is hoped
After remote mirror secondary mirror 11, reflective receiving telescope the 3rd mirror 12, the second reflecting mirror 13, the 3rd reflecting mirror 14, the 4th reflecting mirror 15
Enter shrink beam system 24；After the 5th reflecting mirror 16 reflection, the first off-axis paraboloidal mirror 17 and the second off-axis paraboloidal mirror 18 complete light
The shrink beam collimation of bundle, reflexes to light combination mirror 20 through the 6th reflecting mirror 19；Heliogram in light combination mirror 20 surface and intrinsic combiner,
And be concerned with photodetector 21 surface；Optical signalling is converted into electrical signal by photodetector 21, and through intermediate frequency amplifier
After 22 amplify, gathered by data acquisition process computer 23, and rejuvenation target image.
Further, the irreflexive heliogram of target and intrinsic light close bundle on light combination mirror 20 surface, and in light electrical resistivity survey
Survey device 21 surface to be concerned with；Optical signalling is converted into electrical signal by photodetector 21, and after intermediate frequency amplifier 22 amplification, by
Data acquisition process computer 23 gathers, and rejuvenation target image；The step of restored image is：
A () carries out matched filtering using the frequency spectrum of institute's transmission signal to the signal receiving, obtain the Range Profile of target；
(b) selected characteristic point in multiple Range Profiles of same target, and characteristic point is snapped on same time shafts, with
Compensate target and the distance between radar change；
C () does one-dimensional Fourier transform in each range cell, obtain the when m- doppler image of target；
D () is according to the pulse spacing of institute's transmission signal, and signaling rate, calculates the pass of Doppler frequency shift and orientation
The relation of system, time shafts and distance, and make coordinate transform, finally give the range-azimuth picture of target.
The present invention compared with prior art has the advantage that：
(1) present invention returning by the use of the reflective astronomical telescope of ground heavy caliber as retrosynthesis aperture laser radar system
Ripple signal telescope, can be obviously improved echo-signal signal to noise ratio；
(2) present invention returning by the use of the reflective astronomical telescope of ground heavy caliber as retrosynthesis aperture laser radar system
Ripple signal telescope, is capable of to target on a large scale, follows the tracks of in high precision, at a high speed.
Brief description
Fig. 1 is composition and the principle schematic of apparatus of the present invention.
In figure：1 is tunable laser, and 2 is spectroscope, and 3 is the first reflecting mirror, and 4 is tilting mirror, and 5 is focusing system, 6
For transmitter-telescope secondary mirror, 7 is transmitter-telescope primary mirror, and 8 is laser signal emission system, and 9 is reflective receiving telescope, 10
For reflective receiving telescope primary mirror, 11 is reflective receiving telescope secondary mirror, and 12 is reflective receiving telescope the 3rd mirror, 13
For the second reflecting mirror, 14 is the 3rd reflecting mirror, and 15 is the 4th reflecting mirror, and 16 is the 5th reflecting mirror, and 17 is the first off-axis paraboloidal mirror,
18 is the second off-axis paraboloidal mirror, and 19 is the 6th reflecting mirror, and 20 is light combination mirror, and 21 is photodetector, and 22 is intermediate frequency amplifier, 23
For data acquisition process computer, 24 is shrink beam system.
Fig. 2 is transmission signal time domain and frequency domain scattergram.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
As shown in figure 1, a kind of retrosynthesis aperture laser radar system based on reflective astronomical telescope of the present invention, including
Tunable laser 1, spectroscope 2, laser signal emission system 8, receiving telescope 9, shrink beam system 24, light combination mirror 20, photoelectricity
Detector 21, intermediate frequency amplifier 22, data acquisition process computer 23 etc.；
Laser signal emission system 8 includes the first reflecting mirror 3, tilting mirror 4, focusing system 5, transmitter-telescope secondary mirror 6, sends out
Penetrate telescope primary mirror 7；Focusing system 5, is to change axial spacing between transmitter-telescope secondary mirror 6 and transmitter-telescope primary mirror 7
Guiding mechanism, realizes the focusing to differing heights target for the laser signal；Tunable laser 1 launches tuning pulse laser letter
Number, through spectroscope 2, the first reflecting mirror 3, tilting mirror 4, transmitter-telescope secondary mirror 6 and transmitter-telescope primary mirror 7, irradiate target and produce
Raw diffuse-reflectance；Laser signal emission system 8 is arranged on receiving telescope primary mirror 10 supporting construction sidepiece, realizes mechanical linkage, protects
The optical axis of laser signal emission system 8 and the light of receiving telescope 9 during the target of the different angles of pitch of card detection and different orientations
Axle remains parallel.
Reflective receiving telescope system 9 includes reflective receiving telescope primary mirror 10, reflective receiving telescope secondary mirror
11st, reflective receiving telescope the 3rd mirror 12, the second reflecting mirror 13, the 3rd reflecting mirror 14, the 4th reflecting mirror 15；Reflective reception
Telescopic system 9 can be in reflective receiving telescope primary mirror 10, reflective receiving telescope secondary mirror 11, the 4th reflecting mirror 15
The axle that the heart is determined realizes the rotation at 0 to 360 ° of azimuth, in reflective receiving telescope the 3rd mirror 12, the second reflecting mirror 13
The axle that the heart is determined realizes the rotation of 0 to 90 ° of the angle of pitch, realizes to target on a large scale, follows the tracks of in high precision, at a high speed；System is revolved
Go to any angle, the 4th is constant in the outgoing beam holding of reflecting mirror 15.
It is anti-that shrink beam system 24 includes the 5th reflecting mirror 16, the first off-axis paraboloidal mirror 17, the second off-axis paraboloidal mirror 18 and the 6th
Penetrate mirror 19；The focus of the first off-axis paraboloidal mirror 17 and the second off-axis paraboloidal mirror 18 overlaps, and realizes shrink beam and collimation；Using parabola
As reflecting surface, extra off-axis aberration and aberration will not be introduced.
Tunable laser 1 launches tuning pulsed laser signal (as shown in Figure 2), through spectroscope 2 beam splitting, small part light
Transmission is reflected into laser signal emission system 8 as intrinsic light, most of light；Reflect through the first reflecting mirror 3, tilting mirror 4, by
It is emitted into free space after transmitter-telescope secondary mirror 6, transmitter-telescope primary mirror 7 beam-expanding collimation, be radiated at target surface and occur
Diffuse-reflectance；Target echo signal is received by reflective receiving telescope system 9, passes sequentially through reflective receiving telescope primary mirror
10th, reflective receiving telescope secondary mirror 11, reflective receiving telescope the 3rd mirror 12, the second reflecting mirror 13, the 3rd reflecting mirror 14,
Shrink beam system 24 is entered after 4th reflecting mirror 15；After the 5th reflecting mirror 16 reflection, the first off-axis paraboloidal mirror 17 and second is from axle
Parabolic lens 18 completes the shrink beam collimation of light beam, reflexes to light combination mirror 20 through the 6th reflecting mirror 19；Heliogram is in light combination mirror 20 table
Face and intrinsic combiner, and be concerned with photodetector 21 surface；Optical signalling is converted into electrical signal by photodetector 21,
And after amplifying through intermediate frequency amplifier 22, being gathered by data acquisition process computer 23, and rejuvenation target image；
The irreflexive heliogram of target closes bundle with intrinsic light on light combination mirror 20 surface, and in photodetector 21 surface phase
Dry；Optical signalling is converted into electrical signal by photodetector 21, and after intermediate frequency amplifier 22 amplification, by data acquisition process
Computer 23 gathers, and rejuvenation target image；The step of restored image is：
A () carries out matched filtering using the frequency spectrum of institute's transmission signal to the signal receiving, obtain the Range Profile of target；
(b) selected characteristic point in multiple Range Profiles of same target, and characteristic point is snapped on same time shafts, with
Compensate target and the distance between radar change；
C () does one-dimensional Fourier transform in each range cell, obtain the when m- doppler image of target；
D () is according to the pulse spacing of institute's transmission signal, and signaling rate, calculates the pass of Doppler frequency shift and orientation
The relation of system, time shafts and distance, and make coordinate transform, finally give the range-azimuth picture of target.
Claims (2)
1. a kind of retrosynthesis aperture laser radar system based on reflective astronomical telescope, including tunable laser (1), divides
Light microscopic (2), laser signal emission system (8), reflective receiving telescope system (9), shrink beam system (24), light combination mirror (20),
Photodetector (21), intermediate frequency amplifier (22) data acquisition process computer (23) etc. it is characterised in that：Described laser letter
Number emission system (8) includes the first reflecting mirror (3), tilting mirror (4), focusing system (5), transmitter-telescope secondary mirror (6), transmitting are hoped
Remote mirror primary mirror (7)；Focusing system (5) is to change axial spacing between transmitter-telescope secondary mirror (6) and transmitter-telescope primary mirror (7)
Guiding mechanism, realize the focusing to differing heights target for the laser signal；Tunable laser (1) launches tuning pulse laser
Signal, through spectroscope (2), the first reflecting mirror (3), tilting mirror (4), transmitter-telescope secondary mirror (6) and transmitter-telescope primary mirror
(7), irradiate target and produce diffuse-reflectance；Laser signal emission system (8) is arranged on receiving telescope primary mirror (10) supporting construction side
Portion, realize mechanical linkage it is ensured that when detecting the target of the different angles of pitch and different orientations laser signal emission system (8) light
Axle remains parallel with the optical axis of reflective receiving telescope system (9), and described reflective receiving telescope system (9) includes
Reflective receiving telescope primary mirror (10), reflective receiving telescope secondary mirror (11), reflective receiving telescope the 3rd mirror (12),
Second reflecting mirror (13), the 3rd reflecting mirror (14), the 4th reflecting mirror (15)；Reflective receiving telescope system (9) can be around anti-
Penetrate formula receiving telescope primary mirror (10), axle that reflective receiving telescope secondary mirror (11), the 4th reflecting mirror (15) center are determined
Realize the rotation at 0 to 360 ° of azimuth, determined around reflective receiving telescope the 3rd mirror (12), the second reflecting mirror (13) center
Axle realize the rotation of 0 to 90 ° of the angle of pitch, realize to target on a large scale, follow the tracks of in high precision, at a high speed；Reflective reception is looked in the distance
Mirror system (9) rotates to any angle, keeps constant, described shrink beam system (24) in the outgoing beam of the 4th reflecting mirror (15)
Including the 5th reflecting mirror (16), the first off-axis paraboloidal mirror (17), the second off-axis paraboloidal mirror (18) and the 6th reflecting mirror (19)；First
The focus of off-axis paraboloidal mirror (17) and the second off-axis paraboloidal mirror (18) overlaps, and realizes shrink beam and collimation；By the use of parabola as anti-
Penetrate face, extra off-axis aberration and aberration will not be introduced；Tunable laser (1) launches tuning pulsed laser signal, through dividing
Light microscopic (2) beam splitting, as intrinsic light, most of light is reflected into laser signal emission system (8) to small part light transmission；Most of
Light reflects through the first reflecting mirror (3), tilting mirror (4) successively, more successively by transmitter-telescope secondary mirror (6), transmitter-telescope primary mirror
(7) it is emitted into free space after beam-expanding collimation, be radiated at target surface and diffuse-reflectance occurs；Target echo signal is connect by reflective
Receive telescopic system (9) to receive, pass sequentially through reflective receiving telescope primary mirror (10), reflective receiving telescope secondary mirror
(11), reflective receiving telescope the 3rd mirror (12), the second reflecting mirror (13), the 3rd reflecting mirror (14), the 4th reflecting mirror (15)
Enter shrink beam system (24) afterwards；After the 5th reflecting mirror (16) reflection, the first off-axis paraboloidal mirror (17) and the second off-axis paraboloidal mirror
(18) complete the shrink beam collimation of light beam, reflex to light combination mirror (20) through the 6th reflecting mirror (19)；Heliogram is in light combination mirror (20)
Surface and intrinsic combiner, and be concerned with photodetector (21) surface；Optical signalling is converted into electricity by photodetector (21)
Learn signal, and after intermediate frequency amplifier (22) amplification, gathered by data acquisition process computer (23), and rejuvenation target image.
2. the retrosynthesis aperture laser radar system based on reflective astronomical telescope according to claim 1, its feature
It is：The irreflexive heliogram of target closes bundle with intrinsic light on light combination mirror (20) surface, and on photodetector (21) surface
Relevant；Optical signalling is converted into electrical signal by photodetector (21), and after intermediate frequency amplifier (22) amplification, is adopted by data
Collection processes computer (23) collection, and rejuvenation target image；The step of restored image is：
A () carries out matched filtering using the frequency spectrum of institute's transmission signal to the signal receiving, obtain the Range Profile of target；
(b) selected characteristic point in multiple Range Profiles of same target, and characteristic point is snapped on same time shafts, to compensate
Target and the distance between radar change；
C () does one-dimensional Fourier transform in each range cell, obtain the when m- doppler image of target；
D () is according to the pulse spacing of institute's transmission signal, and signaling rate, the relation in calculating Doppler frequency shift and orientation,
Time shafts and the relation of distance, and make coordinate transform, finally give the range-azimuth picture of target.
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| CN201610786688.XA CN106483530A (en) | 2016-08-31 | 2016-08-31 | Retrosynthesis aperture laser radar system based on reflective astronomical telescope |
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Cited By (8)
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| CN109085602A (en) * | 2018-09-19 | 2018-12-25 | 北京聚恒博联科技有限公司 | A kind of atmospheric remote sensing laser radar system |
| CN111175781A (en) * | 2020-01-16 | 2020-05-19 | 中国科学院国家空间科学中心 | Multi-angle multispectral spaceborne ionosphere detection device |
| CN111708041A (en) * | 2020-06-24 | 2020-09-25 | 中国科学院上海高等研究院 | Double-beam auxiliary enhanced laser detection method and device |
| CN112558286A (en) * | 2020-12-16 | 2021-03-26 | 航天科工微电子系统研究院有限公司 | Large-caliber dynamic light-adjusting large-optical-distance short-wave optical system for photoelectric tracking and aiming equipment |
| CN112596229A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Large-caliber off-axis transmitting telescope optical system for directional transmitting equipment |
| CN112596230A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Light path system for photoelectric tracking active chromatographic illumination |
| CN114488510A (en) * | 2021-12-24 | 2022-05-13 | 北京航天控制仪器研究所 | Low-cost high-resolution active and passive single-pixel imaging optical-mechanical system |
| CN114895281A (en) * | 2022-05-10 | 2022-08-12 | 上海枢光科技有限公司 | Method and device for generating target information by intrinsic signal and target return signal |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085602A (en) * | 2018-09-19 | 2018-12-25 | 北京聚恒博联科技有限公司 | A kind of atmospheric remote sensing laser radar system |
| CN111175781A (en) * | 2020-01-16 | 2020-05-19 | 中国科学院国家空间科学中心 | Multi-angle multispectral spaceborne ionosphere detection device |
| CN111708041A (en) * | 2020-06-24 | 2020-09-25 | 中国科学院上海高等研究院 | Double-beam auxiliary enhanced laser detection method and device |
| CN111708041B (en) * | 2020-06-24 | 2023-09-01 | 中国科学院上海高等研究院 | Double-beam auxiliary enhancement laser detection method and device |
| CN112558286A (en) * | 2020-12-16 | 2021-03-26 | 航天科工微电子系统研究院有限公司 | Large-caliber dynamic light-adjusting large-optical-distance short-wave optical system for photoelectric tracking and aiming equipment |
| CN112596229A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Large-caliber off-axis transmitting telescope optical system for directional transmitting equipment |
| CN112596230A (en) * | 2020-12-16 | 2021-04-02 | 航天科工微电子系统研究院有限公司 | Light path system for photoelectric tracking active chromatographic illumination |
| CN114488510A (en) * | 2021-12-24 | 2022-05-13 | 北京航天控制仪器研究所 | Low-cost high-resolution active and passive single-pixel imaging optical-mechanical system |
| CN114488510B (en) * | 2021-12-24 | 2024-03-29 | 北京航天控制仪器研究所 | Low-cost high-resolution active and passive single-pixel imaging optical-mechanical system |
| CN114895281A (en) * | 2022-05-10 | 2022-08-12 | 上海枢光科技有限公司 | Method and device for generating target information by intrinsic signal and target return signal |
| CN114895281B (en) * | 2022-05-10 | 2023-09-29 | 上海枢光科技有限公司 | Method and device for generating target information by intrinsic signals and target return signals |
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