The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
EnMAP (Environmental Mapping and Analysis Program) is a German spaceborne imaging spectrometer Earth observing mission planned for launch in 2019. This paper reflects the status of the mission with an focus to changes of the Ground Segment based on a major review conducted in 2016 and the EnMAP Data Exploitation and Application Development Program and recent activities.
Hyperspectral Imager Suite (HISUI) is a future spaceborne hyperspectral Earth imaging system being developed by Japanese Ministry of Economy, Trade, and Industry (METI). HISUI will be launched and deployed on International Space Station (ISS) for three year operation from 2019. In FY2016, manufacturing and testing of HISUI Flight Model and design of HISUI Exposed Payload System were conducted. HISUI...
The Canadian Space Agency (CSA) in collaboration with the Naval Research Laboratory (NRL) and NASA are considering a coastal and inland water color hyperspectral imager as a complement to the NASA's Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission. This hyperspectral imager with 100 m spatial sampling would be specifically designed to sample the coastal oceans, estuaries and lakes, and will...
NorthStar: “Changing the way we see the world.” This paper introduces the NorthStar constellation of satellites as a new era in remote sensing that will respond to urgent terrestrial and spaceborne information needs. The NorthStar System of Systems includes Earth Observation (EO) and Space Situational Awareness (SSA) modules, with a key unifying theme for identifying and extracting meaningful and...
Due to the low correlation of SAR data in Yunnan mountainous area, special interferometric processing method is proposed in this paper. Initially, two SLC images are analyzed and co-registrated by using different correlation functions. The best registration result is selected through correlation evaluation. Then, the noisy phase is multi-looked and smoothed by four phase filtering algorithms. The...
The performance of FMCW InSAR system mounted on small platforms can be considerably degraded by trajectory and attitude errors, which are mainly caused by platform's small size, low flight height and atmospheric turbulance. Moreover, we cannot use large-volume, heavy-weight and high-accuracy inertial measurement units due to the limit of platform's capability. In view of this problem, we proposed...
The multi-azimuth-angle (MAA) UAV SAR is introduced in this paper. Compared with the traditional TomoSAR that rebuilds the 3-D scene only from the boresight aspect, the MAA UAV SAR can rebuild the 3-D scene from different multi azimuth angles and then provide multiple or even full aspects 3-D image by the novel 3-D image formation algorithm presented in this paper. Firstly, the MAA UAV SAR is introduced,...
For SAR (Synthetic Aperture Radar) system, the high resolution (range/azimuth) and wide swath are required constantly. It is challenge to achieve both high azimuth resolution and wide swath imaging for spaceborne SAR system because it poses contradicting requirements for pulse repetition frequency. The technique of the multiple receive apertures and digital beam forming is utilized to overcome the...
Digital beamforming (DBF) is wildly used in phased array radars, there are many algorithms and technologies to realize it. The traditional DBF architecture is based on digital signal processor. However, with the increasing requirements on target detection and resolution, the number of channel is getting more, the volumne of processing data is becoming larger, the capability of the digital signal processor...
This study used MODIS 3 KM Aerosol Optical Depth (AOD) products, ground-level PM2.5 measurements in Beijing and the Public Health knowledge to estimate the number of death attributed to the long-term exposure to a harmful level of PM2.5 concentrations. The study results demonstrated that 2015 population-weighted averaged PM2.5 in Beijing was 70.46 μg/m3, 369.73% exceeding the China's yearly standard...
Underwater topography can be imaged using remote sensing methods. However, current-topography interaction constitutes the weakest link in the procedures of remote sensing imaging mechanism of underwater topography. Some researchers have studied the effect of simplified topography on a parallel or vertical tidal current field. In this research, we analyzed the modulation effect of skew topography (including...
In the context of global warming, the urban heat island (UHI) has been paid more and more attention by the community. The impervious surface which is rarely changed with the season is a key parameter in regulating UHI scope and its intensity. Considering the importance of impervious surface, in this study, an improved impervious index is firstly proposed to assistant in delimiting the specific UHI...
This paper introduces a variational method for destriping data acquired by pushbroom-type satellite imaging systems. The model leverages sparsity in signals and is based on current research in sparse optimization and compressed sensing. It is based on the basic principles of regularization and data fidelity with certain constraints using modern methods in variational optimization — namely total variation...
In the synthetic aperture radiometer system, the imperfection of the antenna pattern and the inconsistency between the elements can cause systematic spatial error on the retrieved image. Antenna pattern error analysis and calibration methods of an L-band 1-D synthetic aperture radiometer are presented in this paper. An improved calibration algorithm proposed here uses approximate observation target...
Brightness temperature data in Amazon Rainforest, Sahara Desert, and Greenland Plateau are compared between HY-2A Atmospheric Correction Microwave Radiometer (ACMR) and Jason2 Advanced Microwave Radiometer (AMR). The brightness temperature data of the HY-2A ACMR are recalibrated. The brightness temperature recalibration results of the HY-2A ACMR agree well with those of Jason2 AMR. This is submitted...
Pleiades-HR is a high resolution remote sensing system developed by the French Space Agency (CNES) for civil and military users. The constellation is composed of two identical satellites PHR1A launched on 2011, December 17th and PHR1B launched one year after, on 2012, December 2nd. More than 600 images can be daily acquired by each satellite in various viewing angles conditions: the satellites are...
Calibration and Validation (Cal/Val) plans for Geostationary Operational Environmental Satellite version R (GOES-R) Level 2 (L2) products were documented via Resource, Implementation, and Management Plans (RIMPs) for all of the official L2 products required from the GOES-R Advanced Baseline Imager (ABI). In 2015 the GOES-R program decided to replace the typical Cal/Val plans with RIMPs that covered,...
Accurate global observations from space are a critical part of the needed knowledge base for global climate change study. However, atmospheric temperature trends derived from space-borne microwave instruments remains a subject of debate, mainly due to uncertainty arise from calibration error and long-term drift and degradation of instrument. In this study, a new method was developed for assessing...
The Advanced Microwave Scanning Radiometer 2 (AMSR2) was developed and provided to Global Change Observation Mission satellite (GCOM-W) [1][2] led by Japan Aerospace Exploration Agency (JAXA). AMSR2 observes the global water and energy cycling, such as water vapor, precipitation, sea surface temperature, soil moisture, etc. AMSR2 mounted on the GCOM-W satellite was launched by H-IIA Rocket in 2012...
It has been two years we have designed and developed an Infrared camera equipped with micro bolometer sensor. The overall mission of the IR camera addresses Earth observations mainly natural consequences and human effect in the environment. Specifically our IR camera will detect and monitor high temperature due to Indonesia's peat fires and volcano activities. Meanwhile, the micro bolometer has been...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.