Research Interests of Our Lab --from Theories to Applications Prof. YAN Lei

1. Research Interests of Our Lab --from Theories to Applications Prof. YAN Lei School of Earth & Spatial Sciences Beijing Key Lab of Spatial Information Integration and Its Applications Peking University 2006.6 lyan@pku.edu.cn 13910821927

2. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

3. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

4. China Project to Verify General Relativity GRV • Einstein’s General Theory of Relativity: gravity and motion can affect the interval of time and of space. • Relating physical effects: geodetic effect 短程线效应 frame-dragging effect 坐标系拖曳效应 bending of starlight by gravity光线偏转 red shifted引力红移 Shapiro delay夏皮洛时延etc. • Why prove them? new spatial devices… new survey manners… new time-space overview… lyan@pku.edu.cn 13910821927

5. To detect geodetic effect with high-resolution measurement system GRV • The geodetic effect means that space warps towards the weighty mass and light objects accelerate towards heavier ones. • Use a high precision gyroscope to verify the geodetic effect on the fact that space’s curve cause gyro’s precession. lyan@pku.edu.cn 13910821927

6. To inspect the frame-dragging effect GRV • Frame-dragging effect implies that mass’s self-rotation can produce swirling space curve around it. • An Inertial Measurement project, we propose, can accumulate the precession caused by earth’s self-rotation in the pole-around orbit. • China has inertial instrument to satisfy so kind of high precision: 0.01 arcsec/year lyan@pku.edu.cn 13910821927

7. To compare the effect of light get red shifted in a gravitational field GRV • red shifted (time slower) • The gravity field intensity: moon surface weaker • A clock for comparison can be carried to the moon-exploitation plan to prove General Relativity. lyan@pku.edu.cn 13910821927

8. Next point Moon Earth To verify the Shapiro delay effect by combining two detectors GRV • Light travels through gravity field with delay for space’s curve. • In the moon- a radial-sensitive apparatus can be fixed on the moon. • Its parallel work with the other one orbiting around the earth can measure the variance. lyan@pku.edu.cn 13910821927

9. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

10. + vertical… + polarization + angular spectral Measured information Past Future Assumptions in retrievals ~ everything retrieved Only to retrieve AEROSAT APS POLDER MISR MODIS TOMS AVHRR Algorithm complexity PSRS(Polarized Spectral Remote Sensing) Introduction PSRS lyan@pku.edu.cn 13910821927

11. Characteristics of Electromagnetic Wave • Intensity----most popularly measured • Polarization----to modify the intensity distribution in the space direction • Phase---- to modify the intensity distribution at spatial position • Frequency----to modify the intensity in the frequency field lyan@pku.edu.cn 13910821927

12. Research engaged • The three-dimensional polarized reflection spectra of land objects • To measure the surface layer density and components of land objects • Land objects • soil • rock • Water • ….. lyan@pku.edu.cn 13910821927

13. Rock polarized spectrum curves and spectrum cubic chart at 60 o incidence in B band (760-1100nm). Rock polarized spectrum characteristics PSRS lyan@pku.edu.cn 13910821927

14. 0o and 90o Polarized reflectance of brown forest soil at 670-690nm, incidence angle＝40o Soil polarized spectrum characteristics (1) PSRS lyan@pku.edu.cn 13910821927

15. 0o and 90o Polarized reflectance of brown forest soil at 670-690nm, incidence angle＝60o Soil polarized spectrum characteristics (2) PSRS lyan@pku.edu.cn 13910821927

16. Integrating sphere and polarization instruments PSRS lyan@pku.edu.cn 13910821927

17. Application Field • Land objects recognition • Earth Surface Density measurement • Moon or other planets surface detection • Material thickness estimation • Stealth and anti-stealth objects lyan@pku.edu.cn 13910821927

18. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

19. UAV Remote Sensing Information System Ultra-lowUltra-high long time flexibility low-cost • Ultra-high, altitude: (10~30km) • Ultra-low, altitude: (150~400m) UAV Remote Sensing Information System UAVRS lyan@pku.edu.cn 13910821927

20. Remote sensing images gotten with the UAV system (1) Auto-spelled High-resolution Image with 3 Paralleled Digital Cameras UAVRS lyan@pku.edu.cn 13910821927

21. Digital RS images Blow-up hight：500m speed：80km/h shutter: 1/1000 Ground resolusion：56mm lyan@pku.edu.cn 13910821927

22. Remote sensing images gotten with the UAV system (2) Main Street Images of SHIHEZI City with Ortho-graph and Patched Treatments UAVRS lyan@pku.edu.cn 13910821927

23. Remote sensing images gotten with the UAV system (3) The remote sensing image shot on the UAV (1km high, 0.1m resolution) UAVRS lyan@pku.edu.cn 13910821927

24. Infrared images lyan@pku.edu.cn 13910821927

25. SAR images lyan@pku.edu.cn 13910821927

26. Countryside & duckResolution:2.25cm lyan@pku.edu.cn 13910821927

27. UAV Remote Sensing Information System • Another question: data real-time processing • Parallel calculation or collection apparatus: like Fourier lens mechanism, we suggested, for image compressing and transferring UAVRS lyan@pku.edu.cn 13910821927

28. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

29. search place destination Surrounding state original setting On-line leading Navi detail Self-driving Navigation NAVISTAR (China Unicom) LBS lyan@pku.edu.cn 13910821927

30. First tier Middle tier Data tier Business Client logic data Servlets / JSP EJBs Database Server Wireless Device Services Software Architecture J2EE: efficient and transplantable LBS lyan@pku.edu.cn 13910821927

31. Multi-scale Presentation LBS lyan@pku.edu.cn 13910821927

32. Multi-logic levels • Different services require different logic networks • Self-driving navigation: • road networks • traffic rules • road ranks • road directions • Public transport navigation: • Transportation lines (subway, bus, urban rails and ship) • Stations • Transfer information LBS lyan@pku.edu.cn 13910821927

33. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

34. Social, psychological and economic factors affecting urban transportation: Individual behavior mechanism Urban spatial distribution law and its dynamic features based on transportation: Research on universal law Basic Research Basis for macroscopic decision on the coordinated development of urban area and transportation Macroscopic Decision Case-based Decision Making: Countermeasure based on macroscopic decision & Emergency Management Individual Decision Making：Effectiveness of macroscopic decision & Closed-loop Control Countermeasure & Effectiveness Techniques & Platform Experiment Platform & Techniques Remote Sensing Techniques for monitoring Systematic Research Issues(4 stages) ITS lyan@pku.edu.cn 13910821927

35. active traffic information gathering units (traffic flow) 1.The stable random distribution of the Public moving unit 2.Way of feedback and gathering movement mode under various velocities 3.Wireless communication Channel (mode、data structures) 4.Feedback to where the people and goods happens Overall process of the Mobile communication and random distributing traits of the public Mobile units Self-organized feedback close-loop theory of the transportation micro-adjustment ITS lyan@pku.edu.cn 13910821927

36. Technological Structure and its extending effects lyan@pku.edu.cn 13910821927

37. Road Construction Road Construction • Problems： • Lack of information share • Disunity of data dictionary • Different statistic result • Complex data merge algorithm Traffic emergency Monitor signal for Freeway The Capability of Buses, Road network Bus statue Toll Level Info. Road construction Road construction Freeway Status Freeway Status The reports for Video、Accident • Results： • Disharmony of high level control • Feebleness in dealing with emergency Taxi Info. Bus line Bus line Video monitor for Subway The number & Location of Taxi E-government Road network Status Freeway Status Freeway Status Dynamic Road-status Info. Hinge Info. Restriction Restriction Hinge Infor. Long-distance Info. Bus Station Info. Subway Info. Subway Info. The reports for Video、Accident Freeway control Traffic management Bus control center Taxi control Information systems related to transportation …. …. Subway control center line-haul center lyan@pku.edu.cn 13910821927

38. Content: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

39. Background and Significance of UUV • Background • To reduce the error of Inertial Navigation System (INS) accumulated with time • To meet the demand of ”High Precision, Long Time, Self-determination, Passive ” of the underwater vehicle in the future • Significance • Apply in ground navigation such as taxi navigation, Location Based Service (LBS), Positioning with mobile phone etc. UUV lyan@pku.edu.cn 13910821927

40. Ocean Geographic Characteristics Data Base Sensor of Ocean Geographic Characteristics Optimum matching position INS Matching Algorithm emendation Principles of Underwater Passive Navigation System • Underwater Gravity-Aided Navigation System, GANS • Underwater Terrain-Aided Navigation System,TANS Basic Principles & Key Technologies UUV lyan@pku.edu.cn 13910821927

41. Underwater Terrain-Aided Navigation System UUV lyan@pku.edu.cn 13910821927

42. Simulation Platform UUV lyan@pku.edu.cn 13910821927

43. Further Research UUV lyan@pku.edu.cn 13910821927

44. Conclude 6 aspects: • GRV (General Relativity Verifying) • PSRS (Polarized Spectral Remote Sensing) • UAV (Unmanned Air Vehicle ) RS System • LBS (Location Based Services) • ITS (Intelligent Transportation System) • UUV (Unmanned Underwater Vehicles ) lyan@pku.edu.cn 13910821927

45. Thanks Prof. YAN Lei E-mail: lyan@pku.edu.cn School of Earth & Spatial Sciences Beijing Key Lab of Spatial Information Integration and Its Applications Peking University 2006.6 lyan@pku.edu.cn 13910821927