CN210142190U - Laser ranging system receiving and transmitting optical axis parallelism calibration system - Google Patents
Laser ranging system receiving and transmitting optical axis parallelism calibration system Download PDFInfo
- Publication number
- CN210142190U CN210142190U CN201920905344.5U CN201920905344U CN210142190U CN 210142190 U CN210142190 U CN 210142190U CN 201920905344 U CN201920905344 U CN 201920905344U CN 210142190 U CN210142190 U CN 210142190U
- Authority
- CN
- China
- Prior art keywords
- laser
- receiving
- laser ranging
- telescope
- optical
- 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
Images
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model discloses a school system is examined to laser rangefinder system receiving and dispatching optical axis parallelism belongs to laser rangefinder technical field. The system comprises a laser ranging system, a guide star system and an optical reversing device, wherein the guide star system and the optical reversing device are arranged on the laser ranging system. And a guide star system is introduced, so that the monitoring field of the system is expanded. The method combines a laser attenuation technology and a range gate technology, utilizes an optical retro-reflection device to capture a little part of light as reference light to adjust the central position of a visual field, and simultaneously utilizes a target tracking closed-loop method to realize real-time automatic calibration of the parallelism of a receiving and transmitting optical axis of the system. The laser ranging system has the advantages that the receiving and transmitting optical axis function of the automatic adjusting system is considered in the single laser ranging process, the pointing accuracy of the laser ranging system is effectively improved, the system echo rate and the working efficiency are improved, and the laser ranging system has important significance in advancing to the full-automatic era of laser ranging technology.
Description
Technical Field
The utility model belongs to the technical field of the laser rangefinder technique and specifically relates to a school system is examined to laser rangefinder system receiving and dispatching optical axis parallelism.
Background
The space detection technology realized by using the laser ranging system is a multidisciplinary comprehensive technology formed by combining the technologies of laser, photoelectric detection, automatic control, electronic communication, astronomical measurement, satellite orbit and the like. Different from other geodetic space measurement technologies, the laser ranging system adopts a high repetition frequency, high peak power and narrow pulse laser, solves a series of difficult problems of low ranging precision, short range, poor stability, huge equipment and the like of the traditional radar system, breaks through the limitations of ultrasonic ranging and other optical ranging technologies, and provides an advanced space detection means with all weather, high precision, interference resistance, miniaturization and the like. In recent years, research on high-performance laser ranging systems gradually goes from laboratories to field tests, and the high-performance laser ranging systems are widely applied to the engineering fields of space exploration, aerospace and aviation and the like, so that attractive practical prospects are shown.
In the process of long-distance laser ranging, after a ground observation station guides a telescope to track a target according to observation target forecast, a laser emits laser pulses to the observation target, echo photons are reflected to the ground observation station from the surface of the observation target, meanwhile, a receiving telescope is used for transmitting echo signals to a time measurement subsystem, and finally, the distance R between the earth and the observation target is obtained by measuring the time delta t between the laser pulses and the earth and the observation target. According to different observation targets, laser ranging systems are classified into a satellite laser ranging System (SLR), a space debris laser ranging system (DLR), a moon laser ranging system (LLR), and the like.
The conventional laser ranging system mainly includes:
(1) a laser and a transmission system. The laser generates laser pulses that are reflected and collimated by the broken axis transmission system.
(2) A telescope servo tracking system mainly comprises a transmitting mirror, a receiving mirror and a CCD, and the telescope servo tracking system respectively completes the functions of transmitting laser, receiving laser, monitoring the satellite tracking state and the like.
(3) The photon detecting system consists of mainly receiving telescope, variable receiving diaphragm, narrow-band interference filter, photoelectronic receiver, discriminator, time interval measuring unit and other parts. After being focused by the receiving telescope, the laser pulse echoes enter the photoelectric receiving device through the receiving diaphragm and the interference optical filter. An electric pulse is generated by a photoelectric device, a rectangular pulse is output by a discriminator, and finally, the rectangular pulse enters a time interval counter.
(4) The time frequency system provides absolute time coordinates for system operation, one of the functions of the time frequency system is to receive pulse per second and UTC time of the GPS satellite system and input the pulse per second and UTC time into the control computer; the second function is to provide a highly stable 10MHz signal.
(5) The computer control system mainly has the following functions: calculating the real-time position of the observation target according to the forecast; controlling a laser to emit pulses through an ignition signal; accurately controlling the range gate through an opening/closing signal; the operation of the frame and the telescope is controlled by a shaft encoder and a servo; acquiring observation data through a computer structure; correcting pointing error of the instrument, calibrating system delay, preprocessing observation data and forming a standard point data file.
The optical system for laser ranging mainly adopts two modes of a transmitting-receiving separation optical path and a common optical path. Compared with a laser ranging system adopting a transmitting-receiving separation optical path, the system adopting the common optical path has certain limitation on the laser emission frequency, and provides higher requirements on the performances of optical elements, such as an optical rotating mirror, and the like, adopted in the system. At present, most international stations adopt a transmitting-receiving separation optical system, a small-caliber telescope smaller than 300mm is generally used as a transmitting laser telescope, and another telescope with a larger caliber is used as a receiving echo telescope.
For a laser ranging system with separated transmitting and receiving light paths, the parallelism of laser transmitting and receiving optical axes has important influence on the performance of ranging performance of the system and the realization of ranging precision. In order to ensure that the receiving and transmitting optical axes of the system have higher parallelism, the system is adjusted and maintained at intervals. However, over time, the optical axis of the transceiver of the system will be affected by various factors such as temperature, gravity, wind disturbance, etc. and will change to different degrees. Particularly for daytime laser ranging, due to the fact that day and night temperature difference is large, the Kudet optical path and laser beams are severely deviated, the parallelism of the receiving and transmitting optical axes of the system exceeds the allowable range of the parallelism of the optical axes of the system, and the measuring range and the ranging accuracy of the laser ranging system are sharply reduced.
In the routine maintenance of the laser ranging system, the calibration method of the parallelism of the transmitting and receiving optical axes of the system mainly comprises a projection target method, a large-caliber parallel light tube method, a small-caliber parallel light tube method, a laser optical axis instrument method, a pentaprism method, a light splitting path projection method and the like. Although the experimental method is mature, the actual operation is very difficult and complicated, the method cannot be realized in the distance measurement process, various environmental changes during the measurement of the external field cannot be adapted, and the requirements of testing and inspection in the conventional distance measurement process cannot be met.
Disclosure of Invention
The invention of the utility model aims to: the laser ranging system transmitting-receiving optical axis parallelism calibration system is provided, a guide star system is introduced, and a system monitoring view field is enlarged. The laser attenuation technology and the range gate technology are combined, an optical retro-reflection device is used for capturing a little part of light as reference light in emitted light to adjust the central position of a receiving view field of a telescope, and meanwhile, a target tracking closed-loop method is used for realizing real-time automatic calibration of the parallelism of a receiving and transmitting optical axis of the system. The laser ranging system has the advantages that the receiving and transmitting optical axis function of the automatic adjusting system is considered in the single laser ranging process, the pointing accuracy of the laser ranging system is effectively improved, the system echo rate and the working efficiency are improved, and the laser ranging system has important significance in advancing to the full-automatic era of laser ranging technology.
The utility model adopts the technical scheme as follows:
the utility model provides a laser rangefinder system receiving and dispatching optical axis parallelism examines school system, the system include laser rangefinder system with set up in guide star system and optics reverse device on the laser rangefinder system.
Further, the laser ranging system includes: a laser; the laser generates laser pulses; a transmitting telescope for transmitting laser pulses; a receiving telescope for receiving the reflected laser pulses; the low-light level television camera is used for acquiring images of an observation target; the main wave sampling circuit is used for processing the laser pulse to form two paths of electric pulses, wherein one path is the main wave pulse and is used for starting the event timer; the other path is used for sampling from a time frequency standard and recording the laser emission time Tmin-pulse; the photoelectric detector is used for receiving the reflected echo photons; the time frequency system is used for providing an absolute time coordinate of system operation, inputting the pulse per second and the UTC time of the received GPS satellite system into the control computer and providing a 10MHz signal; and the control computer is used for calculating the real-time position of an observation target according to the forecast, generating an ignition signal to control the laser to emit pulses, generating a door opening signal to accurately control the range door, controlling the shaft angle encoder and the servo control frame to ensure the normal operation of the telescope, collecting observation data, finishing the correction of instrument pointing errors, the calibration of system delay and the pretreatment of observation data, and forming a standard point data file.
Further, the optical retro-reflection device can be connected with the transmitting telescope and the receiving telescope by any one of opening, adding a beam, adhering and/or suspending.
Further, the laser ranging system may be: a satellite laser ranging system, a space debris laser ranging system, or a lunar laser ranging system.
Further, the system further comprises: a collimator; the collimator consists of an objective lens, a reticle arranged on the focal plane of the objective lens, a light source and ground glass arranged for uniformly illuminating the reticle.
Furthermore, the optical reversing device is arranged between the transmitting telescope and the receiving telescope and is communicated with the transmitting telescope and the receiving telescope; through setting up the crossbeam, respectively place a pyramid in transmitting telescope lens cone and receiving telescope lens cone, intercept few light and return to receiving system as reference light in the transmission light, adopt laser attenuation technique to attenuate it, combine the accurate control range gate of range gate technique, avoid causing the damage to the photoelectric device of high sensitivity in the system.
Further, the optical retroreflective device is used for intercepting a small part of the emitted light from the light to enter the receiving system; can be one or more of a pyramid, an optical fiber and/or a rotating mirror.
Further, the laser may be a 1064nm solid or semiconductor laser, a 1550nm solid or semiconductor laser, a 532nm solid or semiconductor laser and/or other wavelength laser; the range of the repetition frequency is several Hz to thousands Hz; the energy size ranges from a few mJ to hundreds mJ.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: through the design of optics, electronics and machinery, a guide telescope is introduced, and a laser attenuation technology and a range gate technology are combined, so that the large-field laser ranging system with the functions of real-time automatic calibration of parallelism of a receiving and transmitting optical axis is provided. By introducing the guide star system, the receiving view field of the system is increased, the searching and capturing speed of an observation target is improved, and the parallelism adjustment difficulty of the transmitting and receiving optical axis is reduced. With the optical inversion device, a small portion of the light is intercepted in the emitted light and returned as reference light to the ICCD in the SLR receiving system, instead of the sidereal monitoring in the prior art. The central position of the receiving view field is adjusted by acquiring the deviation amount of the imaging position of the reference light in real time, so that the central position of the receiving view field is ensured to be unchanged. Meanwhile, the reference light is attenuated by combining a laser attenuation technology and a high-precision range gate technology, so that the SPAD is prevented from responding to the reference light in advance, and the problems of high system false alarm rate and the like caused by the SPAD are avoided. In addition, a target closed-loop tracking method is adopted, so that the height coincidence of the observation target, the laser light tip and the center position of the view field is kept in the distance measurement process, and the real-time and automatic calibration of the receiving and transmitting optical axes of the system is realized.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a large-view-field laser ranging system with a real-time automatic calibration function for parallelism of transmitting and receiving optical axes, provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a laser ranging system according to an embodiment of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
The utility model provides a laser rangefinder system receiving and dispatching optical axis parallelism examines school system, the system include laser rangefinder system with set up in guide star system and optics reverse device on the laser rangefinder system.
The invention uses optical reverse reflection device to intercept little part of light from emission laser as reference light, attenuates the reference light by laser attenuation technique, returns it to receiving telescope along receiving light path, and finally transmits it to micro-light TV camera for imaging, uses computer to real-time collect the imaging position (A, E) of reference light, and calculates the collimation difference with the ideal position (A ', T') of reference light at each time T, if the position is coincident with the ideal position, the central position of receiving field is not deviated, if the position is not coincident, the computer is controlled to calculate the offset (△ A, △ E), the offset of central position is △ A, △ E) according to the relative position relation of imaging of micro-light TV camera, meanwhile, the invention uses range gate echo technique, according to the time of reference light and laser, the flight range gate is controlled precisely, the receiving sensitivity is avoided, and the problem of false door opening is avoided.
The computer feeds back the position deviation (△ A, △ E) of the center of the view field to the control computer, converts the position deviation into the actual miss distance (namely the azimuth and height of the theodolite) of the observation station and sends the actual miss distance to the servo system, thereby completing the automatic correction of the center position of the view field and ensuring the center position of the view field to be relatively unchanged.
In addition, a guide star system is added, and the monitoring field of view of the system is enlarged. Due to the reasons of low track precision of an observed target, large system error, complex observation environment and the like, the observed target sometimes cannot enter a telescope receiving sensitive area, and the system cannot acquire effective observation data. In order to solve the problems, the invention is characterized in that a guide star mirror is arranged outside the lens barrel of the receiving telescope in a direction parallel to the lens barrel. And further, the monitoring view field of the system is enlarged, the speed of searching and observing the target is improved, the target searching time is reduced, the target observing time is increased, the working efficiency of the system is improved, and the method is very favorable for acquiring more observation data.
Example 2
On the basis of the above embodiment, the laser ranging system includes: a laser; the laser generates laser pulses; a transmitting telescope for transmitting laser pulses; a receiving telescope for receiving the reflected laser pulses; the low-light level television camera is used for acquiring images of an observation target; the main wave sampling circuit is used for processing the laser pulse to form two paths of electric pulses, wherein one path is the main wave pulse and is used for starting the event timer; the other path is used for sampling from a time frequency standard and recording the laser emission time Tmin-pulse; the photoelectric detector is used for receiving the reflected echo photons; the time frequency system is used for providing an absolute time coordinate of system operation, receiving the pulse per second and the UTC time of the GPS satellite system, inputting the pulse per second and the UTC time into the control computer, and simultaneously providing a 10MHz signal; and the control computer is used for calculating the real-time position of the observation target according to the forecast, generating an ignition signal to control the laser to emit pulses, generating a door opening signal to accurately control the range gate, controlling the shaft angle encoder and the servo control frame, acquiring observation data, finishing instrument pointing error correction, system delay calibration and observation data preprocessing, and forming a standard point data file.
Example 3
On the basis of the above embodiment, the optical retroreflective device can connect the transmitting telescope and the receiving telescope by any means of opening, adding a beam, adhering and/or suspending.
Example 4
On the basis of the above embodiment, the laser ranging system may be: a satellite laser ranging system, a space debris laser ranging system, or a lunar laser ranging system.
Example 5
On the basis of the above embodiment, the system further includes: a collimator; the collimator consists of an objective lens, a reticle arranged on the focal plane of the objective lens, a light source and ground glass arranged for uniformly illuminating the reticle.
Specifically, the collimator is one kind of collimator, mainly used for installing and calibrating optical instrument, and it emits parallel light beam to replace remote target, and consists of objective lens, reticle set in the focal plane of the objective lens, light source and frosted glass for the reticle to be illuminated homogeneously. According to the geometrical optics principle, because the reticle is arranged on the focal plane of the objective lens, when the light source illuminates the reticle, light emitted by each point of the reticle becomes a beam of parallel light after passing through the reticle.
The main method for calibrating the central position of the receiving field of view by the collimator comprises the following steps: the collimator is arranged in the receiving telescope tube to emit parallel light, and the center of the aperture diaphragm arranged in front of the SPAD is ensured to be superposed with the position of the SPAD sensitive area by adjusting the position of the SPAD adjusting frame, namely the center of the receiving view field is ensured to be unchanged.
Systematic and accidental errors: for a single ground level telescope, there are two major types of errors: systematic errors and accidental errors. In accidental errors, wind influences a horizontal shaft, irregular shaking of a shaft system, errors caused by environment and temperature changes and the like, the accidental errors have randomness and cannot be corrected, and the influences are reduced only through smoothing processing of measured data. The system errors include vertical differences, horizontal differences, errors caused by mechanical deformation under the action of gravity and the like, most of the system errors can be adjusted or corrected, and residual errors still remain after adjustment or correction. Pointing errors arise because the presence of the above errors causes a deviation between the pointed position of the telescope's calibration and the actual position in the sky.
In the production and assembly process of the optical instrument, strict requirements are imposed on the parallelism between optical axes of the instrument, the acquisition and detection accuracy of target information is largely determined by the consistency of the optical axes, but the parallelism between the optical axes of the instrument is changed to different degrees under the limitation of instrument processing and installation conditions and the influence of various surrounding environmental conditions in the use and transportation process of the instrument, and meanwhile, in order to maintain an optoelectronic system in daily use, the parallelism of the optical axes of the whole system needs to be quickly tested so as to be calibrated. At present, the commonly used optical axis parallelism detection method mainly comprises two types of field measurement and laboratory measurement, which mainly comprise a projection target method, a large-caliber parallel light tube method, a small-caliber parallel light tube method, a laser optical axis instrument method, a pentaprism method, a light splitting path projection method and the like, wherein the laboratory method is mature, but is difficult to adapt to various environmental changes in external field measurement so as to meet the requirements of testing and inspection.
Example 6
On the basis of the previous embodiment, the optical reversing device is arranged between the transmitting telescope and the receiving telescope and is communicated with the transmitting telescope and the receiving telescope; through setting up the crossbeam, respectively place a pyramid in transmitting telescope lens cone and receiving telescope lens cone, intercept few light and return to receiving system as reference light in the transmission light, adopt laser attenuation technique to attenuate it, combine the accurate control range gate of range gate technique, avoid causing the damage to the photoelectric device of high sensitivity in the system.
Example 7
On the basis of the above embodiment, the optical retroreflective device is used for intercepting a small part of the emitted light from the light to enter the receiving system; can be one or more of a pyramid, an optical fiber and/or a rotating mirror.
Example 8
On the basis of the above embodiment, the laser may be a 1064nm solid-state or semiconductor laser, a 1550nm solid-state or semiconductor laser, a 532nm solid-state or semiconductor laser, and/or other wavelength laser; the range of the repetition frequency is several Hz to thousands Hz; the energy size ranges from a few mJ to hundreds mJ.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. The laser ranging system transmitting-receiving optical axis parallelism calibration system is characterized by comprising a laser ranging system, a guide star system and an optical reversing device, wherein the guide star system and the optical reversing device are arranged on the laser ranging system.
2. The system of claim 1, wherein the laser ranging system comprises: a laser; the laser generates laser pulses; a transmitting telescope for transmitting laser pulses; a receiving telescope for receiving the reflected laser pulses; the low-light level television camera is used for acquiring images of an observation target; the main wave sampling circuit is used for processing the laser pulse to form two paths of electric pulses, wherein one path is the main wave pulse and is used for starting the event timer; the other path is used for sampling from a time frequency standard and recording the laser emission time Tmin-pulse; the photoelectric detector is used for receiving the reflected echo photons; the time frequency system is used for providing an absolute time coordinate of system operation, inputting the pulse per second and the UTC time of the received GPS satellite system into the control computer and providing a 10MHz signal; and the control computer is used for calculating the real-time position of an observation target according to the forecast, generating an ignition signal to control the laser to emit pulses, generating a door opening signal to accurately control the range door, controlling the shaft angle encoder and the servo control frame to ensure the normal operation of the telescope, collecting observation data, finishing the correction of instrument pointing errors, the calibration of system delay and the pretreatment of observation data, and forming a standard point data file.
3. The system of claim 1, wherein the optical retro-reflective device is adapted to couple the transmitting telescope and the receiving telescope by any of opening, adding a beam, attaching and/or suspending.
4. The system of claim 2, wherein the laser ranging system may be: a satellite laser ranging system, a space debris laser ranging system, or a lunar laser ranging system.
5. The system of claim 4, wherein the system further comprises: a collimator; the collimator consists of an objective lens, a reticle arranged on the focal plane of the objective lens, a light source and ground glass arranged for uniformly illuminating the reticle.
6. The system of claim 1, wherein the optical retro-reflector is disposed between the transmitting telescope and the receiving telescope, communicating the transmitting telescope and the receiving telescope; through setting up the crossbeam, respectively place a pyramid in transmitting telescope lens cone and receiving telescope lens cone, intercept few light and return to receiving system as reference light in the transmission light, adopt laser attenuation technique to attenuate it, combine the accurate control range gate of range gate technique, avoid causing the damage to the photoelectric device of high sensitivity in the system.
7. The system of claim 1, wherein the optical retro-reflective device is configured to intercept a minimal portion of the light from the emitted light into the receiving system; can be one or more of a pyramid, an optical fiber and/or a rotating mirror.
8. A system as claimed in claim 2 wherein the laser may be a 1064nm solid state or semiconductor laser, a 1550nm solid state or semiconductor laser, a 532nm solid state or semiconductor laser and/or other wavelength laser; the range of the repetition frequency is several Hz to thousands Hz; the energy size ranges from a few mJ to hundreds mJ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905344.5U CN210142190U (en) | 2019-06-17 | 2019-06-17 | Laser ranging system receiving and transmitting optical axis parallelism calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905344.5U CN210142190U (en) | 2019-06-17 | 2019-06-17 | Laser ranging system receiving and transmitting optical axis parallelism calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210142190U true CN210142190U (en) | 2020-03-13 |
Family
ID=69735274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920905344.5U Active CN210142190U (en) | 2019-06-17 | 2019-06-17 | Laser ranging system receiving and transmitting optical axis parallelism calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210142190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327561A (en) * | 2022-08-29 | 2022-11-11 | 中国科学院云南天文台 | Laser ranging active tracking device |
| CN117368937A (en) * | 2023-12-06 | 2024-01-09 | 中国人民解放军63921部队 | Active and passive optical integrated angle and distance measurement system |
-
2019
- 2019-06-17 CN CN201920905344.5U patent/CN210142190U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327561A (en) * | 2022-08-29 | 2022-11-11 | 中国科学院云南天文台 | Laser ranging active tracking device |
| CN117368937A (en) * | 2023-12-06 | 2024-01-09 | 中国人民解放军63921部队 | Active and passive optical integrated angle and distance measurement system |
| CN117368937B (en) * | 2023-12-06 | 2024-03-29 | 中国人民解放军63921部队 | Active and passive optical integrated angle and distance measurement system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110133626B (en) | Method and system for checking parallelism of receiving and transmitting optical axes of laser ranging system | |
| CN105487082B (en) | A kind of laser radar for long-range target acquisition | |
| CN108445471B (en) | A kind of range accuracy appraisal procedure under the conditions of single-photon laser radar multi-detector | |
| CN101408618B (en) | Wide light beam illumination three-dimensional gating imaging system of airborne laser radar | |
| CN101071171A (en) | Dualwavelength dual-field Mie scattering laser radar structure and its detecting method | |
| CN210142190U (en) | Laser ranging system receiving and transmitting optical axis parallelism calibration system | |
| CN110286381A (en) | A kind of delay value of laser ranging system marks effect system, method and device in real time | |
| Hampf et al. | Satellite laser ranging at 100 kHz pulse repetition rate | |
| CN208833907U (en) | Laser radar apparatus error detecting facility | |
| CN111007527B (en) | Infrared laser composite rapid imaging tracking device | |
| CN102445949A (en) | System and method for positioning heliostat | |
| CN115932888A (en) | High-resolution space target three-dimensional detection system | |
| CN115308759A (en) | Satellite-borne active-passive integrated ultra-long-distance single photon space debris ranging and positioning system and method | |
| US20150092179A1 (en) | Light ranging with moving sensor array | |
| CN206192364U (en) | VLBI measurement system and ground verification device based on X ray | |
| CN105758342A (en) | Simple artillery barrel inner bore straightness detection equipment | |
| CN105758255A (en) | Gun barrel bore straightness detection equipment | |
| CN110018493B (en) | Laser power selection method of dual-waveband intersection type active range gating imaging system | |
| CN104614155B (en) | Device and method for measuring pointing accuracy of corner reflector | |
| CN210142195U (en) | Real-time delay value effect system of laser ranging system | |
| CN105758340B (en) | Novel artillery barrel bore Linearity surveying equipment | |
| Wang et al. | Laser altimeter of CE-1 payloads system | |
| CN103471562B (en) | The auto-collimation measurement method of the remote dynamically registration of quasi-parallel light and device | |
| CN114142926A (en) | Ultra-far deep space laser communication capturing and tracking system | |
| CN102169015B (en) | A femtojoule level laser micro energy meter capable of measuring and observing simultaneously |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |