最新刊期
卷 16 ， 期 S1 ， 2012
- 摘要：This paper briefly introduces the development of Mapping satellite-1 engineering construction and the mission of satellite system,detailed introduces the ability of satellite system and camera load;mainly expounds the key technologies and problems of photogrammetry about Mapping satellite-1 without ground control points.Including LMCCD camera,on-orbit calibration for camera parameters of space photogrammetry,adjustment for three-line array EFP images without ground control point,etc,reached and exceeded the engineering index requirement by the engineering practice;introduces the application situation of Mapping satellite-1,and puts forward development ideas about this satellite.It can gives basic reference for the Mapping satellite-1 engineering.关键词：satellite engineering;satellite system;image product;LMCCD camera;on-orbit calibration for camera;position without ground control point;Mapping Satellite-1
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发布时间：2021-06-10 - 摘要：The study on the satellite photogrammetry and engineering practice without ground control points are the difficulties to all researchers in this field.This paper introduces domestic and international research activity in optics satellite photogrammetry without ground control points,and analyzes the images from Mapping Satellite-1.The result shows that China plays an international leading role in the study on satellite photogrammetry and engineering practice without ground control points.关键词：without ground control points;satellite;photogrammetry;LMCCD
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发布时间：2021-06-10 - 摘要：Mapping Satellite-1,designed and developed with the heritage of small satellite CAST 2000 by DFH Satellite Co.LTD,is the first new-generation transmission type photogrammetric satellite of China.Its photogrammetric positioning and mapping system uses LMCCD（Line Matrix Charge Coupled Device）surveying and mapping structure,consisting of three independent panchromatic mapping CCD cameras for forward,nadir and backward looking,three star sensors and one GPS receivers.On the focal plane of the nadir-looking camera,beside one linear array CCD,there are four area array CCDs to improve elevation accuracy.The nominal B/H ratio for stereo is 1.0.By a optical bench of high strength,high rigidity,high stability,the three mapping cameras,three star sensors and a multispectral CCD camera are integrated together as an organic whole,satisfying well high precision and high stability missions requirements of the geometrical angle relations between the cameras.In-flight test results show that the photogrammetric positioning accuracy is better than mission requirements,and Mapping Satellite-1 satisfies global mapping requirements of 1:50000 scale without ground control points.The General design,technical features,course of development and in-flight images of Mapping Satellite-1 are mainly presented in this article,especially the technical characteristics and the application perspective are emphatically described in order for different users to utilize all kinds of products of the satellite better,improving its application efficiency.关键词：Mapping Satellite-1;system design;technical feature;course of development;in-flight image
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发布时间：2021-06-10 - 摘要：Off-axis TMA optical system,both long focal length and wide-field,can be optimized for optical system of zero distortion,low-field curvature.Off-axis TMA optical system well meet the requirements for optical system of surveying and mapping,therefore recognized for development of aerospace remote mapping camera.This paper gives the present status and development trend of foreign aerospace mapping camera,and discusses the problems of off-axis TMA optical system used in mapping,such as the definition of camera inner orientation elements,correction of focal length calculation formula,focusing mode effect of camera principal point position accuracy,system distortion calibration,system stability,and other discussions.关键词：long focal length;off-axis TMA;optical system;mapping camera
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发布时间：2021-06-10 - 摘要：On orbit radiometric calibration means relative radiometric calibration and absolute radiometric calibration,it is a critical process and important method for improving the resolution of quantitative study of remote sensing data.In this paper,methods and principles of regional synthesized uniform field based relative radiometric calibration and albedo based absolute radiometric calibration,are introduced.It is the first time to use the above methods for the calibration of the three cameras such as high resolution camera,high multispectral camera and triplet linear array camera on Mapping Satellite-1.Results show that,the braid noise is removed effectively by the process of relative radiometric calibration.Then,the absolute radiometric calibration for Mapping Satellite-1 sensors are also performed through Dunhuang field radiation target,the atmospheric parameters and the ground object spectral reflectivity.Results show that,the difference between the reflectivity of ground object obtained by the satellite sensors and that of field measured value is less than 5%,which demonstrated the effectiveness of on orbit radiometric calibration coefficient.关键词：Mapping Satellite-1;uniform field;relative radiometric calibration;absolute radiometric calibration;irradiancebased method
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发布时间：2021-06-10 - 摘要：In-flight absolute radiometric calibration is one of the critical techniques for quantitative remote sensing.High spatial resolution remote sensor based on large area of gray-scale tarps vicarious calibration method relies on traps BRDF,diffuse global ratio and atmospheric optical thickness measurement,the calibration approach could isolated the DN signal created by the traps from the response produced by background radiance sources,which simplify the calibration process and eliminating the assumption of aerosol scattering.Uncertainty analysis showed that the calibration uncertainty is 4.7% at present,and could improve to 3%—4% in the near future.We describe the rationale,methods,and results of a large area gray-scale tarps based vicarious calibration campaign that was conducted between July and August,2011.Through regression analysis of the observed values of the target and total irradiance of the two days,initially to determine the performance of band 3 might changed.关键词：radiometric calibration;quantitative remote sensing;high spatial resolution remote sensor;atmospheric optical thickness;remote sensing;Mapping Satellite-1
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发布时间：2021-06-10 - 摘要：In space environment,it will reduce the precision of the object location and data processing that the unpredictable changes of the surveying camera geometric parameters.For predominating the movement quantity,the in-flight calibration is actualized in most surveying and mapping satellite.In this paper,we primary produce the content and method of the in-flight calibration of Mapping Satellite-1.关键词：Mapping Satellite-1;surveying and mapping camera;geometric calibration
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发布时间：2021-06-10 - 摘要：Mapping Satellites-1 is the first new-generation stereo mapping satellite of China.It is designed by DFH Satellite Co.LTD.and based on CAST2000 small satellite-platform.Mapping Satellite-01 has been launched successfully inAugust,2010.Mapping Satellite-02 has been launched successfully in May,2012.All of the performances are satisfactory in-orbit test.The paper gives an evaluation of the in-orbit performance,which is very useful for follow-on application work.关键词：Mapping Satellite-1;mapping camera;high-resolution camera;in-orbit performance evaluation
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发布时间：2021-06-10 - 摘要：The attitude control requirements of mapping satellite is analysed.Aiming at the main error source effect on attitude control accuracy,investigates relevant solving measures.Based on the requirements of mapping satellite,the schemes of attitude control is proposed.关键词：mapping satellite;Attitude;control;schemes design
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发布时间：2021-06-10 - 摘要：A method for performing the high accuracy time calibration of satellite onboard control system with the GPS time information is presented.In this method,the Pulse Per Sceond（PPS） sent by the GPS receiver is served as the reference,while the broadcast time of GPS whole-seconds is received to perform the autonomous time calibration of satellite onboard control system,this allows the time calibration accuracy of satellite onboard control system to be over 0.1 ms and also meet the high accuracy time requirements of satellite.关键词：satellite onboard control system;high accuracy GPS time calibration;GPS pulse per sceond（PPS）;GPS wholeseconds time
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发布时间：2021-06-10 - 摘要：Attitude accuracy is one of the most important parameters to evaluate the performance of the star trackers.In this paper,a method of star tracker measurement errors is presented.This method is applicable to the in-orbit and on-ground analysis of measurement errors.Especially on uncertain attitude of the analysis.关键词：star tracker;measurement errors;error analyze
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发布时间：2021-06-10 - 摘要：According to the characteristic of Mapping Satellite-1,thermal control techniques and key points were introduced.What’s more,analysis of the satellite telemetry thermal data on orbit was performed.From the analysis of telemetry data,we can draw the conclusion that the thermal control techniques is active,and the thermal enviroment satisfies the electronic equipments temperature requirements.关键词：thermal control;integrative;isothermal;thermal insulation;transient heat consumption;thermal coupling
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发布时间：2021-06-10 - 摘要：In course of Mapping Satellite-1 on orbit operation,satellite system storges module storages the telemetry data,processing telemetry data in connection with camera data to ground make use of data transmission channel.This method based on data format of data transmission channel,obtained the telemetry data from ground station,which was transmited by data transmission channel.This method deals with telemetry data of satellite on orbit operation with EGSE,by way of analyzing telemetry data for satellite.关键词：data transmission channel;telemetry data;processing method;EGSE
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发布时间：2021-06-10 - 摘要：The composition, performance, principle, ground test data and on-orbit performance of Ni-Cd battery for Mapping Satellite-1 were introduced in this paper. Ni-Cd battery’s cycle life was predicted based on the ground-test result and the on-orbit operation. The on-orbit management of Ni-Cd battery was suggested.关键词：Ni-Cd battery;on-orbit operation
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发布时间：2021-06-10 - 摘要：This paper introduces the demand and design of Mapping Satellite-1’s housekeeping system.After introducing the framework of the system,can bus management,time management and storage module are discussed.关键词：housekeeping system;can bus;time management;storage module
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发布时间：2021-06-10 - 摘要：This paper introduces the status and effect of the ground application system for Mapping Satellite-1 in China space surveying and mapping equipment firstly.Then the function,constituent,workflow,product design,technical characteristic,actually operation and surveying and mapping capability of ground application system for Mapping Satellite-1 are emphasized.Lastly,the data processing products are displayed in this paper.关键词：satellite engineering;ground application system;satellite image product;surveying and mapping product
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发布时间：2021-06-10 - 摘要：Space borne linear array sensors have been introduced into photogrammetry since twenty years ago.However,the traditional solution of frame photograph cannot deal with image data obtation by linear array sensors because the position and attitude observations of the spacecraft vary at each scanner line.Thus it is impossible to determinate the exterior orientation parameters of each scanner line.A proper approximation has to be applied to the spacecraft trajectory model to reduce the unknown factors in bundle adjustment.There are three models feasible to represent the satellite trajectory:Quadratic Polynomial Model（QPM）,Systematic Error Compensation Model（SECM）,and Orientation Image Model（OIM）.Revealing the differences of the three sensor models and relationships between different control strategies and the final accuracy of geo-referencing after bundle adjustment is the main purpose of this paper.To fully evaluate the accuracy that the space borne three-line scanner can achieve,experiments with LMP,SECM and OIM triangulation algorithms are performed with a 500 km length data sets of the Mapping Satellite-1 under the WGS-84 coordinate system.关键词：three-line array imagery;bundle adjustment;sensor model;accuracy analysis
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发布时间：2021-06-10 - 摘要：Based on the unchangeable characteristic of the star sensor axis angle in the inertial space,the method of star sensor measurement error,error of satellite structure installation parameters and structural deformation is discussed using the on-orbit measurement data,then the corresponding mathematical models are given out.Also the feasibility of the method is verifie by practical calculation.关键词：satellite attitude;star sensor;axis angle;measurement noise
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发布时间：2021-06-10 - 摘要：This paper did an evaluation of the location accuracy of the Mapping Satellite-1 Three-Line-Array（TLA） image with and without control points.The experiment data involves several test blocks and a lot of field surveyed GPS control points.The result showed that the horizontal accuracy of TLA image can reach 12 m and the height accuracy can reach 10 m without GCPs.When using GCPs,the accuracy can reach eight meters and three meters respectively which can satisfy the accuracy requirement of 1:50000 mapping.关键词：Mapping Satellite-1;accuracy evaluation;RFM;block adjust
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发布时间：2021-06-10 - 摘要：Aim to the mechanical structure of Mapping Satellite-1 high resolution camera,the impact of factors caused the dislocation of the CCD image in high resolution slice is systematic analyzed,experimental data is used to quantitatively describe the chip CCD image dislocation phenomenon.Automatic extraction and optimization method is proposed for same name point in the image overlap region based on the characteristics,the dislocation fitting function correction model is established for the dislocation frame data.The preprocessing production tests show that the method is an effective solution to the high-resolution camera image dislocation problem and CCD image seamless mosaic.关键词：CCD;image preprocessing;charicteristic;dislocation;mosaic
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发布时间：2021-06-10 - 摘要：At present,there is own image organization model and recording mode for Mapping Satellite-1 data organization systems.However,due to the various data organization standards between departments,it is difficult for inter-departmental to retrieve,share and integrate remote sensing data.Therefore,this paper puts forward Mapping Satellite-1 image data organization model based on cells and its codes of GeoSOT（Geographical coordinate Subdividing grid with One dimension integer coding on 2 n-Tree）.To establish virtual one grid for Mapping Satellite-1 remote sensing data by adding a subdivision index in inventory database,which does not change the existing Mapping Satellite-1 data organization.At last,test shows that it costs little to transform the present data organization system and it is significantly to prove data integration efficiency.关键词：GeoSOT;subdivision cell;anti-Z order;logical subdivision;data aggregation
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发布时间：2021-06-10 - 摘要：This paper presents the strategy of Mapping Satellite-1 orbit maintenance based on photographic mission,for the status of the considerable impact of orbit maintenance upon photographic mission.This paper analyzes the orbit characteristics and the impact of orbit maintenance upon photographic mission,and presents one method of getting the photographic mission twice by overlap characteristics of the adjacent tracks.An example application is given,and the result confirms the feasibility of this method.In addition,this paper improves the strategy of orbit maintenance by analyzing photographic mission.关键词：strategy of orbit maintenance;photographic mission;overlap characteristics of the adjacent tracks
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发布时间：2021-06-10 - 摘要：Satellite photogrammetry without ground control points is an efficient method for global mapping,which has three ways:the first is that the attitude stability of satellite attains 1×10-6（°/s）,the second is high-precision attitude mensuration system,and the third is photogrammetry bundle adjustment.Because of the limitation of techniques,the only way to realize the photogrammetry without ground control points is photogrammetry bundle adjustment.When the research of bundle adjustment abroad couldn’t resolve the high-precision positioning without ground control points,we had developed the EFP（Equivalent Frame Photo）multi-functional bundle adjustment technique in Mapping Satellite-1 engineering,which included camera on-orbit calibration,bundle adjustment to whole three-lines intersection area,error compensation of attitude angle with low frequency and drift angle（yawing） effect processing.The technique was validated using Mapping Satellite-1 imagey datum.The results show that the positioning accuracy without ground control points had reached 10.3 m/5.7 m（plane/height）,and met the precision requirement of mapping topographical map on a scal of 1:50000.关键词：satellite photogrammetry;positioning without ground control points;bundle adjustment;equivalent frame photo
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发布时间：2021-06-10 - 摘要：<正>《遥感学报》创刊于1997年,是随着中国遥感事业的发展而成长起来的综合性学术期刊,也是目前中国遥感与数字地球领域的权威学术期刊。创刊以来,《遥感学报》结合中国遥感事业不同时期的重点和需要,刊登了大量国内最新科研成果和国家重点支持的研究项目
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