ZiYuan-3 (ZY-3) surveying satellite is China's first civilian high-resolution stereo mapping satellite. The satellite's objective oriented towards plotting 1:50,000 and 1:25,000 topographic maps. Compared with using foreign commercial imagery, establishment of the image geometry model core technical problem for different products various applications ZY-3 This article analyses key problems high-precision processing based on overall design, proposes technology virtual CCD line-array imaging....

The ZiYuan-3 surveying satellite (ZY-3) is a high-precision civilian imaging sensor. Since its launch on January 9, 2012, it has been in operation for one and half years. Although the initial postlaunch ZY-3 geometric accuracy was verified during an in-orbit period, on-orbit calibration still necessary from time to time. This vastly improved location planimetry panchromatic images. letter briefly describes principle of production processes sensor-corrected products. Furthermore, block...

Abstract The ZiYuan‐3 surveying satellite ( ZY ‐3), launched on 9th January 2012, is China's first civilian high‐resolution stereo mapping satellite. To ensure the accuracy of ‐3, considerable research has been conducted since its launch calibration and validation three‐line array charge‐coupled device CCD ) sensors TLC sensors). Its dynamic exterior systematic errors (such as camera installation errors) static interior distortion were eliminated using 1:2000 digital orthophotomaps elevation...

The rational polynomial coefficient (RPC) model has raised considerable interest in the photogrammetry and remote sensing community. Much work been done on frame camera imagery and/or push-broom scanner imagery, it widely accepted that RPC can be taken as an alternative to rigorous sensor models for photogrammetric processing. However, there have few publications discussing application of SAR image In this paper, we first review geometric effects compare with optical satellite imagery. Then,...

Many freely available global or quasi-global digital elevation model (DEM) datasets, including Advanced Land Observing Satellite (ALOS) World 3 Dimensions (3D) 30 m DEM (AW3D30 DEM), Spaceborne Thermal Emission and Reflection Radiometer (ASTER Shuttle Radar Topography Mission (SRTM Multiple-Error-Removed-Improved-Terrain (MERIT TerraSAR-X add-on for Digital Elevation Measurement (TanDEM-X) (TanDEM-X are extremely useful products many applications, so it is necessary to make a reasonable...

Digital Surface Model (DSM) derived from high resolution satellite imagery is important for various applications. GFDM China’s first civil optical remote sensing with multiple agile imaging modes and sub-meter resolution. Its panchromatic 0.5 m 1.68 multi-spectral images. Compared the onboard stereo viewing instruments (0.8 forward image, 0.65 back 2.6 multi-spectrum images) of GF-7, a mapping China in same period, their accuracy very similar. However, DSM has not yet been verified or fully...

Geolocation accuracy is a critical issue for remote sensing applications. To achieve subpixel accuracy, geolocation errors need to be systematically identified and corrected. In this study, we propose geometric sensor model FengYun-3D (FY-3D) MERSI-II, second-generation visible (VIS)/infrared (IR) spectroradiometer, generate the lookup table (GLT). The retrieves imaging rays from focal plane K-mirrors, 45° scanning mirrors, platform, earth's surface. After refining attitude with ground...

Attitude models play a prominent role in the geometric processing of high-resolution satellite imagery (HRSI). Because high accuracy matching algorithm, attitude oscillations can occur HRSI. Various methods for correcting this oscillation with parallax observations have been proposed. However, few researchers attempted to model from records or taken noise into consideration. In paper, penalized spline-based is proposed, which piecewise and continuously differentiable polynomials smooth out...

Abstract It has been widely accepted that the rational polynomial coefficient (RPC) model can be used as an alternative to rigorous sensor models of high resolution optical satellites for photogrammetric processing. In application RPC synthetic aperture radar (SAR) image processing, it confirmed range‐Doppler replaced by model. Until now, however, orthorectification with in SAR processing not considered. This paper investigates how perform Following a brief introduction about spaceborne...

Understanding the regional variations and mechanisms of rural hollowing-out in Yellow River Basin (YRB) is crucial to guiding revitalization. However, further quantitative evaluation analysis are essential address issue caused by decrease population expansion residential land YRB at different spatio-temporal scales. Based on China’s census data areas extracted from remote sensing images, classified into five types: smart development type (SDT), human–-land recession (HRT), loss (PLT), (LET),...

The attitude accuracy of high-resolution satellite images is the main factor affecting their geometric positioning accuracy. Bundle block adjustment method for realizing simultaneous estimation models overlapping over a large area. In current research on joint multi-line array images, usually carried out with view or load as unit without considering consistency error same platform. this paper, we develop self-calibration strip bundle scheme that considers boresight misalignment among...

As an important means of improving positioning accuracy, block adjustment has been used in the improvement and assessment accuracy for Chinese Gaofen-7 (GF-7) satellite. However, there is little research on what factors affect without ground control points (GCPs). The correlation between images participating not clear. This paper proposes coefficients canonical analysis five indicators three sets ten factors, including topographic image tie (TPs) to quantify influence accuracy. Block GCPs...

While using multispectral remote sensing images for quantitative application, registration accuracy between spectrums will directly affect the of each production, thus, precise image is a base step further processing and application. ZY-3 China's first civilian mapping satellite, which attracts extensive attention its excellent positioning ability as well high precision radiation characteristic, greatly enhances applications domestic satellite. However, spectral camera optical system carried...

Abstract. ZiYuan-3 (ZY-3) mapping satellite is the first civilian high-resolution stereo of China. The satellite’s objective oriented towards plotting 1:50,000 and 1:25,000 topographic maps. This article proposes ZY-3 Rigorous Image Geometry Model Rational Function (RFM). In addition, this paper utilizes image with region flatlands, hills mountains for block adjustment experiment. Different ground control points are selected accuracy validated by check points, some Digital Surface (DSM),...

Abstract. Chinese ZY3-02 satellite, which is the second of ZY3 series satellites, was launched in May 30th 2016 for complementing mapping and earth observation. In order to eliminate various system errors platform payload, on-orbit geometric validation calibration carried out. Firstly, we introduced parameters three-line stereo camera multispectral bound on this paper. There are four optical cameras ZY3-02: a 4-band nadir-looking multi-spectral with 5.8 m resolution, 2.1m resolution...

Abstract. TSR (Traffic sign recognition) is an important problem in ITS (intelligent traffic system), which being paid more and attention for realizing drivers assisting system unmanned vehicle etc. consists of two steps: detection recognition, this paper describe a new method. The design principle the comply with visual mechanism human, so we propose method using to detect ,which reasonable. In our method, whole scene will firstly be analyzed by model acquire area where signs might placed....

Considering that the atmospheric refraction and aberration of light (AOL) bend path thus affect geolocation accuracy, a rigorous imaging geometric model with corrections AOL is proposed to improve accuracy for GaoFen-7 (GF-7) images without ground control points (GCPs). The correction calculated using simplified two-layer model, while satellite altitude velocity. Then, refined both corrections. 68 scenes GF-7 backward in ten regions different roll off-nadir angles are selected compare detect...

Abstract. The Gaofen-7 (GF-7) satellite was launched on November 3, 2019. It can achieve 1:10000 scale stereo mapping and serve the application needs of basic surveying mapping, natural resources monitoring geographic information resource construction. These rely high-precision digital surface model (DSM) products as data support. Therefore, it is great significance to analyze quality DSM produced by Gaofen-7. This paper uses GF-7 optical images from regions Zhaodong Tianjin in China extract...

SAR Geocoded Ellipsoid Corrected (GEC) imagery is often taken as a post product processed from slant or ground range radar images. However, its geometric specific, being corrected to constant ellipsoid height, makes it coarse geocoded reference for users who are interested in accurate absolute localisation applications, such 'ortho-image' generation and digital elevation model (DEM) production. In order improve the usefulness of GEC imagery, specific distortions induced by terrain require...

The Ziyuan3-01 (ZY3-01) satellite is China’s first civilian stereo surveying and mapping to meet the 1:50,000 scale requirements, has been operated in orbit for 10 years. boresight misalignment of three-line camera (TLC) an essential factor affecting geolocation accuracy, which a principal concern satellites. However, relative relationships TLC are often regarded as fixed same ground scene most traditional geometric calibrations, without considering on-orbit long-periodic changes. In this...