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Due to the influence of weather, cloud cover is one of the common noises. For optical remote sensing images, it is necessary to find an effective method to reduce or eliminate the impact of clouds, which is not only the basis of remote sensing image interpretation accuracy, but also an important way to enhance the effectiveness and availability of remote sensing data. This paper firstly detect the...
This article discusses the new generation of ocean Mobile Monitoring Emergency Monitoring System multimedia approach, details of the mobile multimedia surveillance system to monitor emergency set of field test of identification, satellite broadcasting, data transmission, video conferencing, communications command in one mobile emergency monitoring platform. Extract of which involved the theory and...
Lake water is an essential renewable resource for mankind and the environment and it is important for civil drink water supply. Shitoukoumen reservoir, one of the most important drink water supplies, is taken as examples to assess the water quality by multi-temporal Landsat TM/ETM data. The multiple scattering model within the water is applied to simulate the radiative transfer for retrieval of the...
In recent years, many scientists have done some work in monitoring the fog, and achieved fruitful results. Now we want to conduct more in-depth study. In this paper, we utilize MODTRAN to simulate the relationship between transmittance and visibility, height of fog. By fitting the relationship between them, we get the formula that calculates visibility of fog using transmittance and height of fog...
In this paper, the HDOP and VDOP of the existing and establishment satellite positioning systems are analyzed, and a better constellation configuration is determined. Then, the altitudes of satellite effects on the positioning accuracy are analyzed to search a better constellation. Thirdly, based on the analysis mentioned above and the Beidou II satellites launched, a appropriate constellation for...
In this study, four scenes of Landsat ETM+ images covering Nanjing area were selected to analyze the spatial of Urban Heat Island(UHI) in different seasons. The Land Surface Temperatures(LST) were retrieved from the calibrated images. The results showed that there were large LST variation in different seasons, LST varied from 8°C to 45°C.The UHI in Nanjing displayed remarkable seasonal pattern, with...
The Chlorophyll-a (Chl-a) concentrations in water is of great importance for the monitoring of water quality and ecosystem balance. Remote sensing offers a convenient and systematical tool for the observations of water at a long time scale. In this paper, we present a study of Chl-a estimation using the reflectance models (MOD3 and MOD2) derived from the Medium Resolution Spectral Image (MERSI) onboard...
In real-time GPS precise point positioning (PPP), it is the key to predict precise satellite clock bias (SCB) for real-time PPP. But it is difficult to hold the nuisance and inenarrable performance of space-borne GPS satellite atomic clock because of its high-frequency, sensitivity and impressionable, well. The correlation of SCB and residual are discussed from IGS ultra-rapid products, Taking the...
The East China Sea (ECS) are increasingly polluted with overloading of nutrients, causing frequent Harmful algal blooms (HABs). With the advantages of large-scale and simultaneous observation at a low cost, the potential role of ocean color remote sensing in detecting HABs is highlighted. In this paper, firstly, true color image derived from MODIS L1B data was composited for visual interpretation...
Convergent time (CT) is one important aspect of GPS kinematic precise point positioning (PPP). There are many factors which affect performance, including the effect of different sample rates of observations and GPS satellite clock bias (SCB) (or satellite clock offset), different positioning accuracy on CT of kinematic PPP is discussed deeply in this paper, taking GPS observations from twelve stations...
This work addressed the intercalibration of the infrared window channels of InfraRed Atmospheric Sounder (IRAS), Visible and InfraRed Radiometer (VIRR) and MEdium Resolution Spectral Imager (MERSI) aboard Chinese second generation polar-orbiting meteorological satellite FengYun 3A (FY-3A) with high spectral resolution data acquired by the Atmospheric InfraRed Sounder (AIRS) aboard Aqua. A North Pole...
Based on the observation of Mars probe with ground VLBI, the observation model including the position of Mars probe and connection parameters of reference systems is studied in this paper, and the estimable parameter sequence is determined. Then the adjustment method appropriate for rank defect in the matrix of normal equation coefficients is studied, the model parameters are calculated and their...
Partial cloud cover is a severe problem in the optical remote sensing images, it seriously affected the interpretation and the use of remote sensing images. So how to remove or to reduce haze region from remote sensing images, and how to restore the ground information below thin cloud regions, will become the essential part in improving the availability of the applications of remote sensing images...
It is very necessary to observe, tracking and recognise interested space object including space debris around the earth. A simulation method about ground-based sensor observing, tracking and imaging space object is researched. It includes the visibility analysis of space object in the STK scene, the attitude description mode of object, the data alternant form and format between STK and Vega, the imaging...
This paper presents a brief synthesis of the information obtainable from remote sensing data and how they can be used to design the land degradation assessment model. The use of the Modified Soil Adjusted Vegetation Index (MSAVI), Soil Wetness Index (SWI) and Land use derived from the Landsat Thematic Mapper (TM) were derived for detection and assessment of land degradation in Guyuan County, Hebei...
Based on RS and GIS technology, use the landscape pattern analysis software FRAGSTATS3.3, analyzed landscape changes in Miyun county in 1990, 2000, 2009 nearly 20 years. From landscape structure, spatial distribution and relationship aspects discussed about the landscape changes. Using patch area index, path density index, edge density index, shape index, connection Index and cohesion index describe...
Soil erosion is a serious geo-environmental issue causing land degradation in China. Developing new techniques based on remote sensing data to assess soil erosion will assist in the comprehensive treatment of environment and the sustainable management of soil resources. In this paper, land cover and Normalized Difference Vegetation Index (NDVI) were derived from Landsat Thematic Mapper (TM) images...
Atmospheric upward and downward radiations in visible and near-infrared bands are the key input parameters for radiative transfer modeling, imaging simulation and atmospheric correction. This study gives the numeral models and computing methods of the atmospheric parameters which are related to the two parameters according to four-stream radiative transfer theory. Focusing on the six bands of Landsat...
The Chinese HJ saterllite CCD sensor is similar to Landsat-5 TM with the same spatial resolution, but there are enormous advantages in space coverage and frequency of repeated observations. This paper focuses on the image quality evaluation of the four HJ CCD sensors by reference to Landsat TM data from near-synchronous images. The results are as follows: Mainly due to limited evel of radiation acceptance...
As the interface among land, ocean and atmosphere, coastal zone has very high natural energy and biological productivity. Many people immigrate and live in coastal zone area. With the development of economy, land change and land covers in urban areas tend to change drastically over a short period of time due to rapid urbanization. The paper studied on urbanization of coastal zone area in China based...
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