CN102353343B - System and method for synchronous testing of planetary surface geometric features and its material composition - Google Patents
System and method for synchronous testing of planetary surface geometric features and its material composition Download PDFInfo
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Abstract
本专利公开了一种星球表面几何特征及其物质成份的同步测试系统及方法。它采用主分析及控制系统发出控制信号启动控制信号分配器，由控制信号分配器将控制信号分别传送至X轴步机电机，Y轴步机电机及激光脉冲控制器，以启动红外脉冲激光器聚焦至星球表面扫描区域的不同特征点。回波信号中的1064nm激光反射信号被PIN光电探测器接收，得到聚焦点距离并经一定的延时后，控制增强型成像器件ICCD进行曝光，获取光谱仪分光后的等离子体光谱图像，根据不同的谱线分布，分析该星球表面聚焦点的物质成份。完成星球表面扫描区域所有点的扫描后，重建出区域的三维表面形貌并同时标定出表面各特征点的物质成份。
This patent discloses a synchronous testing system and method for the geometrical features of the surface of a planet and its material composition. It uses the main analysis and control system to send control signals to start the control signal distributor, and the control signal distributor sends the control signals to the X-axis stepper motor, Y-axis stepper motor and laser pulse controller to start the infrared pulse laser focusing to different feature points in the scanned area of the planet's surface. The 1064nm laser reflection signal in the echo signal is received by the PIN photodetector to obtain the focal point distance and after a certain delay, control the enhanced imaging device ICCD to expose, and obtain the plasma spectral image after the spectrometer splits. Spectral line distribution, analyzing the material composition of the focal point on the surface of the planet. After the scanning of all points in the scanning area on the surface of the planet is completed, the three-dimensional surface topography of the area is reconstructed and the material composition of each feature point on the surface is calibrated at the same time.
Description
Technical field
This patent relates to the measuring technology of geometric properties and Matter Composition thereof, specifically refer to a kind of laser test system and method for obtaining simultaneously celestial body three-dimensional surface shape and Matter Composition, it is used for the Synchronization Analysis of survey of deep space China and foreign countries celestial body surface target area geometric properties and material chemical analysis.
Background technology
In survey of deep space, externally celestial body surface topography and Matter Composition analysis are important tasks.Traditional test is surface topography test and the different system of material chemical analysis analysis employing often, separately carry out, its shortcoming is can't geometric properties point is corresponding one by one with its Matter Composition, and because having adopted two cover systems to increase the load of star landing device, increased the cost of survey of deep space.Therefore how geometric properties point surface topography and the detection of its Matter Composition are combined, design new detection system and method, reduce lander load and have great importance.
This patent is for some problems that exist in celestial body surface topography and the Matter Composition analytic system, synchronous test system and the method for a kind of celestial body surface geometry feature and Matter Composition thereof are proposed, this system and method can be in same set of system, celestial body surface target area geometric properties point surface topography and Matter Composition thereof are detected simultaneously, can reduce the load of lander, improve the economy of survey of deep space.
Summary of the invention
The purpose of this patent provides in a kind of survey of deep space, the synchronous test system of celestial body surface geometry feature and Matter Composition thereof and method.The method adopts main analysis and control system to send control signal to start the control signal divider, by the control signal divider control signal is sent to respectively the X-axis Step motor, Y-axis Step motor and laser pulse controller focus to the different characteristic point in celestial body surface scan zone to start the pulsed infrared laser device.1064nm laser reflection signal in the echoed signal is received by the PIN photodetector, obtain focus point distance and after certain time-delay, control enhancement mode image device ICCD exposes, obtain the plasma spectrometry image after the spectrometer light splitting, according to different spectral profile, analyze the Matter Composition of this celestial body surface focus point.After finishing the scanning of having a few in celestial body surface scan zone, the 3 d surface topography that reconstructs the zone also calibrates the Matter Composition of each unique point of surface simultaneously.
The technical scheme of this patent is achieved like this, when arriving from top, target area, celestial body surface certain altitude, the star landing device hovers, send first aim provincial characteristics point X and Y-axis rotational angle value signal by main analysis and control system, the rotation of driven rotary Use of The Polygonal Mirror Scanner mirror is to the precalculated position and start the 1064nm pulsed laser.Pulse laser is divided into two-way: the one tunnel starts counter after directly being received by the laser sampling receiver by main beam splitter immediately begins counting; After another road is reflected by main beam splitter, after focusing on, the line focus optical system gets to celestial body surface focus point.After celestial body surface focus point was hit by pulse laser, the laser reflection signal of existing 1064nm comprised again the plasma resonance spectral signal that laser pulse is induced generation in the echoed signal.Echoed signal is reverse by be divided into the two-way of equivalent optical path behind the Focused Optical system by time beam splitter: the one tunnel directly passes through beam splitter, enter to inject optical fiber through fiber coupler, by the diffraction grating in the spectrometer plasma light spectrum signal that induced with laser produces is carried out light splitting; One the road is passed through the 1064nm narrow band pass filter after the beam splitter reflection, 1064nm laser reflection signal in the echoed signal is received by the PIN photodetector, after amplifier amplifies, control counter stops counting and starts simultaneously digital delay pulse producer DG535, after certain time-delay, control enhancement mode image device ICCD exposes, and obtains the plasma spectrometry image after the spectrometer light splitting.The laser induced plasma signal calculation circuit is analyzed the Matter Composition of this celestial body surface focus point according to different spectral profile; The laser radar computing circuit can calculate this focus point from the distance of PIN photodetector according to numeral and the light velocity in the vacuum of counter simultaneously, and obtain target area planimetric coordinates corresponding to this focus point by coordinate transform, with reconstructed object area three-dimensional surface topography; After laser induced plasma signal calculation circuit and the computing of laser radar computing circuit finish, the result is delivered to main analysis and control system, comprehensively both information can draw this focus point geometric properties and Matter Composition information synchronously.Then send next target area unique point control signal by main analysis and control system, the rotation of driven rotary Use of The Polygonal Mirror Scanner mirror is to next precalculated position; Repeat above signals collecting and analytic process, can get geometric properties and the Matter Composition information of next target area unique point.After finishing the scanning of whole target area, the 3 d surface topography that can reconstruct the zone also calibrates the Matter Composition of surperficial each point simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of this patent, among the figure: 1---and the celestial body surface; 2---surperficial focus point; 3---total reflective mirror; 4---rotating multisurface swept-volume mirror; 5X axle Step motor; 6---telescopic system; 7---the 1064nm pulsed laser; 8---beam expanding lens; 9---convex lens; 10---main beam splitter; 11---inferior beam splitter; 12---fiber coupler; 13---optical fiber; 14---the 1064nm narrow band pass filter; 15---the PIN photodetector; 16---the laser sampling receiver; 17---amplifier; 18---counter; 19---digital delay pulse producer DG535; 20---the laser radar computing circuit; 21---spectrometer; 22---enhancement mode image device ICCD; 23---the laser induced plasma signal calculation circuit; 24---main analysis and control system; 25---the control signal divider; 26---laser pulse controller; 27---the Y-axis Step motor.
Embodiment
The principle of this patent as shown in Figure 1, when arriving from top, 1 target area, celestial body surface certain altitude, the star landing device hovers, send first aim provincial characteristics point X and Y-axis rotational angle value signal to control signal divider 25 by main analysis and control system 24, by control signal divider 25 control signal is sent to respectively X-axis Step motor 5, Y-axis Step motor 27 and laser pulse controller 26.X-axis Step motor 5 and Y-axis Step motor 27 are according to the control signal that receives, and 4 rotations of driven rotary Use of The Polygonal Mirror Scanner mirror are to the precalculated position; After laser pulse controller 26 receives control signal, start 1064nm pulsed laser 7.Pulse laser is divided into two-way to the main beam splitter 10 through beam expanding lens 8, convex lens 9: the one tunnel starts counter 18 after directly being received by laser sampling receiver 16 by main beam splitter 10 immediately begins counting; Celestial body surface focus point 2 is got to after being reflected by main beam splitter 10 in another road after the Focused Optical system that telescopic system 6, total reflective mirror 3, rotating multisurface swept-volume mirror 4 form focuses on.After celestial body surface focus point 2 was hit by pulse laser, the laser reflection signal of existing 1064nm comprised again the plasma resonance spectral signal that laser pulse is induced generation in the echoed signal.Echoed signal is reverse by be divided into the two-way of equivalent optical path behind the Focused Optical system by time beam splitter 11: the one tunnel directly by beam splitter 11, enter to inject optical fiber 13 through fiber coupler 12, by the diffraction grating in the spectrometer 21 the plasma light spectrum signal that induced with laser produces is carried out light splitting; One the road is passed through 1064nm narrow band pass filter 14 after beam splitter 11 reflections, 1064nm laser reflection signal in the echoed signal is received by PIN photodetector 15, after amplifier 17 amplifies, control counter 18 stops counting and starts simultaneously digital delay pulse producer DG53519, after certain time-delay, control enhancement mode image device ICCD 22 exposes, and obtains the plasma spectrometry image after spectrometer 21 light splitting.Laser induced plasma signal calculation circuit 23 is analyzed the Matter Composition of this celestial body surface focus point according to different spectral profile; Laser radar computing circuit 20 can calculate this focus point from the distance of PIN photodetector 15 according to numeral and the light velocity in the vacuum of counter 18 simultaneously, and obtain target area planimetric coordinates corresponding to this focus point by coordinate transform, with reconstructed object area three-dimensional surface topography; After laser induced plasma signal calculation circuit 23 and 20 computings of laser radar computing circuit finish, the result is delivered to main analysis and control system 24, comprehensively both information can draw this focus point geometric properties and Matter Composition information synchronously.Then send next target area unique point X and Y-axis rotational angle value signal to control signal divider 25 by main analysis and control system 24, by control signal divider 25 control signal is sent to respectively X-axis Step motor 5, Y-axis Step motor 27 and laser pulse controller 26.X-axis Step motor 5 and Y-axis Step motor 27 are according to the control signal that receives, and 4 rotations of driven rotary Use of The Polygonal Mirror Scanner mirror are to next precalculated position; Repeat above signals collecting and analytic process, can get geometric properties and the Matter Composition information of next target area unique point.After finishing the scanning of whole target area, the 3 d surface topography that can reconstruct the zone also calibrates the Matter Composition of surperficial each point simultaneously.
Claims (2)
1. the synchronous test system of a celestial body surface geometry feature and Matter Composition thereof, it comprises: total reflective mirror (3), rotating multisurface swept-volume mirror (4), X-axis Step motor (5), Y-axis Step motor (27), telescopic system (6), 1064nm pulsed laser (7), beam expanding lens (8), convex lens (9), main beam splitter (10), inferior beam splitter (11), fiber coupler (12), optical fiber (13), 1064nm narrow band pass filter (14), PIN photodetector (15), laser sampling receiver (16), amplifier (17), counter (18), digital delay pulse producer DG535 (19), laser radar computing circuit (20), spectrometer (21), enhancement mode image device ICCD (22), laser induced plasma signal calculation circuit (23), main analysis and control system (24), control signal divider (25) and laser pulse controller (26) is characterized in that:
When arriving from top, (1) target area, celestial body surface certain altitude, the star landing device hovers, send first aim provincial characteristics point X and Y-axis rotational angle value signal to control signal divider (25) by main analysis and control system (24), by control signal divider (25) control signal is sent to respectively X-axis Step motor (5), Y-axis Step motor (27) and laser pulse controller (26); X-axis Step motor (5) and Y-axis Step motor (27) are according to the control signal that receives, and driven rotary Use of The Polygonal Mirror Scanner mirror (4) rotates to the precalculated position; After laser pulse controller (26) receives control signal, start 1064nm pulsed laser (7), pulse laser is divided into two-way to the main beam splitter (10) through beam expanding lens (8), convex lens (9): the one tunnel starts counter (18) after directly being received by laser sampling receiver (16) by main beam splitter (10) immediately begins to count; After another road is reflected by main beam splitter (10), after focusing on, gets to the Focused Optical system that telescopic system (6), total reflective mirror (3), rotating multisurface swept-volume mirror (4) form celestial body surface focus point (2); After celestial body surface focus point (2) is hit by pulse laser, the laser reflection signal of existing 1064nm comprises again the plasma resonance spectral signal that laser pulse is induced generation in the echoed signal, echoed signal is reverse by be divided into the two-way of equivalent optical path behind the Focused Optical system by time beam splitter (11): the one tunnel directly by time beam splitter (11), enter to inject optical fiber (13) through fiber coupler (12), by the diffraction grating in the spectrometer (21) the plasma light spectrum signal that induced with laser produces is carried out light splitting; One the tunnel is passed through 1064nm narrow band pass filter (14) after time beam splitter (11) reflection, 1064nm laser reflection signal in the echoed signal is received by PIN photodetector (15), after amplifier (17) amplifies, control counter (18) stops counting and starts simultaneously digital delay pulse producer DG535(19), after certain time-delay, control enhancement mode image device ICCD(22) exposes, obtain the plasma spectrometry image after spectrometer (21) light splitting; Laser induced plasma signal calculation circuit (23) is analyzed the Matter Composition of this celestial body surface focus point according to different spectral profile; Laser radar computing circuit (20) can calculate this focus point from the distance of PIN photodetector (15) according to numeral and the light velocity in the vacuum of counter (18) simultaneously, and obtain target area planimetric coordinates corresponding to this focus point by coordinate transform, with reconstructed object area three-dimensional surface topography; Laser induced plasma signal calculation circuit (23) and laser radar computing circuit (20) computing are delivered to main analysis and control system (24) with the result after finishing, and comprehensively both information can draw this focus point geometric properties and Matter Composition information synchronously; Then send next target area unique point X and Y-axis rotational angle value signal to control signal divider (25) by main analysis and control system (24), by control signal divider (25) control signal is sent to respectively X-axis Step motor (5), Y-axis Step motor (27) and laser pulse controller (26), X-axis Step motor (5) and Y-axis Step motor (27) are according to the control signal that receives, and driven rotary Use of The Polygonal Mirror Scanner mirror (4) rotation is to next precalculated position; Repeat above signals collecting and analytic process, can get geometric properties and the Matter Composition information of next target area unique point; After finishing the scanning of whole target area, the 3 d surface topography that can reconstruct the zone also calibrates the Matter Composition of surperficial each point simultaneously.
2. one kind based on the celestial body surface geometry feature of the described test macro of claim 1 and the synchronous detecting method of Matter Composition thereof, it is characterized in that may further comprise the steps:
1) echoed signal is divided into two-way, and wherein the 1064nm laser reflection signal is used to measure the distance of celestial body surface focus point; The laser-induced plasma spectral signal is received by spectrometer and enhancement mode image device ICCD, according to different spectral profile, analyzes the Matter Composition of this celestial body surface focus point;
2) main analysis and control system sends X and Y-axis rotary angle signal, and control X-axis Step motor, the rotation of Y-axis Step motor make pulse laser focusing to the different unique point of scanning area;
3) repeating step 1) obtain the make new advances Matter Composition of focus point of the distance of new focus point and analysis;
4) finish the scanning of having a few in celestial body surface scan zone after, reconstruct the 3 d surface topography in zone and calibrate simultaneously the Matter Composition of surperficial each point.
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| CN103217145B (en) * | 2013-03-27 | 2015-10-28 | 南京航空航天大学 | A kind of Mars DEM makes and strip aerial triangulation method |
| RU2618608C2 (en) * | 2015-07-29 | 2017-05-04 | Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королёва" | Method and device for sampling material from astronomical object surface |
| CN107748011B (en) * | 2017-09-20 | 2019-08-16 | 南京航空航天大学 | The test macro and test method of medium-wave infrared detector image-forming delay time |
| CN110954527B (en) * | 2019-12-11 | 2023-03-28 | 南京信息工程大学 | Automatic detection system for floating atmospheric particulates |
| CN114877869A (en) * | 2022-05-25 | 2022-08-09 | 中国航空工业集团公司沈阳空气动力研究所 | Motion blur suppression test system and working method thereof |
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