Electromagnetic Energy in Remote Sensing Satellite

Diposting oleh Unknown

Visible light is one of several forms of electromagnetic energy, radio waves, ultraviolet rays and X rays are also other forms of energy are prevalent.


Figure: Illustration of recording a variety of phenomena that exist on the surface using remote sensing technology.


Basically, all the energy is the same and perform in accordance with the basic theory of radiation waves. In Figure 1. demonstrated the basic theory of electromagnetic energy that moves in harmony with the sinusoidal shape of the speed of light c. Based on the concept of basic physics, the wave has the following general equation:


C  =  f  x  l

c  =  speed of light (3 x 108 m / sec)
f   =  frequency
l  =  wavelength


Picture: Electromagnetic waves with components including electrical sinusoidal wave (E) and magnetic sinusoidal wave (M).

In the satellite remote sensing, electromagnetic wave grouping most commonly used wavelength is placed in position in the electromagnetic spectrum (Fig. 2.).


Figure 2. electromagnetic spectrum

Name of the spectrum is usually used in the electromagnetic spectrum, such as infrared waves, radio waves, microwaves, and so forth. And the spectrum has no clear boundaries between one part of the spectrum with the spectrum of the next one .. Part of the visible spectrum ( 0.4 to 0.7 μm) on a logarithmic image is part of a narrow, has a sensitivity to the human eye

The nature of electromagnetic radiation more easily described by using the wave theory, but the interaction between electromagnetic energy with matter can be explained by the theory of particles. Particle theory states that electromagnetic radiation consists of several separate parts are referred to as photons. The relationship between the wave theory with quantum theory in the behavior of electromagnetic radiation can be explained by the following equation:

E  =  hc / l

So it can be said the longer the wavelength used the lower energy content.


More aboutElectromagnetic Energy in Remote Sensing Satellite

5 skills required for success in the field of GIS

Diposting oleh Unknown



ESRI Education Manager, Joseph Kerski, wrote an article about the five skills or abilities needed for a successful career in the field of GIS. To-5 expertise or skill is 2 or 3 of them are also must-have skills for successful careers in other fields. So what skill or skills are they?


The first skill for a successful career in the field of GIS is curiosity or the curiosity / wonder is great. They are a successful career in the field of GIS is not only curious about the world of geospatial technologies, but they also want to know about the world itself. They reflect the spatial relationship to work in a local phenomenon to a global scale, ranging from demographics, land use and traffic patterns within their own communities to natural hazards, biodiversity, and climate around the world. This triggers the curiosity that is often necessary to solve the problem by using GIS.

The second skill is the ability to work with data. They are a successful career in the field of GIS has developed the skills to think critically about the data. They not only know where to find data, but with a very good understanding of metadata so that they know the benefits and limitations to work with any kind of data type. They understand well what is the most effective measures to collect, analyze, and display geographic data in the application / GIS software.

The third skill for a successful career in the field of GIS is a basic understanding of geography. GIS practitioners must know the fundamentals behind all spatial phenomena, including map projections, datums, topological relations, spatial data models, database theory and methodology, ways to classify data, how to effectively use spatial statistics and geoprocessing methods, and much more the other.

The ability to adapt quickly is the fourth skill necessary to succeed in the field of GIS. Now this geospatial technology is developing very fast, as fast as other technologies. Cloud computing technology, the choice of GIS data access via the desktop platform or mobile device, access data online is the latest technological developments, as a professional career in the field of GIS, adaptation to technology and flexibility in the application of technology should be a must-have their own skills. This also applies to a successful career in other technologies. Inevitably, they must not only willing to change, but accept and embrace change as an important part of their careers. They are lifelong learners.

The fifth skill is good communication skills. They are a successful career in the field of GIS know how to use GIS and other presentation tools to communicate their work to various audiences. They understand well how to effectively use elements of maps, but they also knew how to communicate the results of their analysis in oral and written reports, visually via video, face to face, online, and through other means.



More about5 skills required for success in the field of GIS

ArcGIS 9.3.1 Tutorial for Beginners

Diposting oleh Unknown

Here is a tutorial ArcGIS 9.3.1 version made ​​by Br. Beni Raharjo. Concerned decided to share the tutorial before you have completed all due ArcGIS version 10 release, so no longer continue the project of making the spirit of the tutorial version 9.x These drafts are still vacant will be equipped with ArcGIS version 10 as well merevsi other drafts.


We think the tutorial is still very relevant to be shared because the release of ArcGIS version 10 does not necessarily make ArcGIS 9.x users directly migrated. Constraints such as license fees and technical constraints led to several years ahead, tutorial ArcGIS 9.x is still urgently needed.

Contents of this tutorial is as follows


  • Introduction to ArcGIS
  • The introduction of ArcMap
  • Creating a Map of Indonesia
  • Introduction to ArcCatalog
  • input Data
  • editing
  • Tables and Queries
  • data Display
  • Geoprocessing

Please download ArcGIS 9.3.1 tutorial for beginners on the following link.

Download books tutorials, PDF, 7Mb

Download the data for training; RAR, 31 Mb



More aboutArcGIS 9.3.1 Tutorial for Beginners

Traffic Information in Real Time Based on WebGIS

Diposting oleh Unknown

Taipei City Government, Taiwan, to develop WebGIS applications utilize SuperGeo Technologies to integrate highway traffic data from a variety of different resources into a single unit the same platform, to address the needs of the public will get real time traffic. WebGIS application uses SuperWebGIS, Internet Map Server developed by SuperGeo Technologies.

In Taipei City, the capital and largest city in Taiwan, the demands of the traffic information is one of the major public concern with the increase of population. Taipei City Government provides a wide range of traffic information, such as subway services, parking, and CCTV. Various types of information from different units, it was hard to put together. To overcome this, a WebGIS platform used to integrate the traffic information resources to answer the diverse needs of the public will get real time traffic and provide all the information directly to public traffic.

Using SuperWebGIS, Internet Map Server developed by SuperGeo Technologies, the application integrates a complete traffic information, such as the information travels bus / subway, traffic incident reports, and Changeable Message Signals (CMS). Thus, the public can easily view the complete information on the WebGIS platform. In addition, the site also includes "YouBike", a public bike hire system.

Provide traffic information real-time based on WebGIS technology, this project uses 3 servers, including Web Server, Database Server, and Real-time Information Receiving Server. All types of traffic information provided by the different units can be viewed via Internet browser, so users can check traffic conditions or plan their routes in accordance with the current traffic situation.

In addition to web browsers, all the traffic information can also be displayed on mobile phones and PDAs. So that users can still get traffic information even when the journey through his cell phone. Also, reports of an accident or other incident in the street can be readily obtained information into an email or SMS on mobile phones.


Traffic information through the Web site by using GIS mapping technology is used to combine all the data from different resources into one common platform. Thus, the public can save time searching for good and get more information in new ways faster.
For more information available at www.supergeotek.com/Library_2_201005.aspx


More aboutTraffic Information in Real Time Based on WebGIS

Surveyor role in optimizing the tax revenue from mining sector

Diposting oleh Unknown


Energy needs of today's surveyors felt increasing. One of the agencies that are now being actively surveyor holding power is the Directorate General of Taxes. As a vital institution that sustains more than 70% of the financing needs of the country, the Directorate General of Taxation deems it necessary to optimize the revenue from the mining sector, especially of oil and gas. Given that the government has issued a total of 9000 permits the mining business, something that makes sense if the Directorate General of Taxation want the optimal revenue from this tax the mining sector. The use of an independent surveyor is expected to complement the existing system of tax collection. With the accuracy of the data from the Surveyor, the error reporting in the concept of self-assessment can be minimized. The involvement of agency surveyors can help provide information on production data, the number of export and production costs of the company mines. With accurate data, the government can control and monitor, so they can know the accurate amount of tax revenue from the mining sector. For that, as of 1 April 2012 the government in this case the Directorate General of Taxation Tax Office will operate in a deposit of Oil and Gas based in Jakarta. Establishment of this office aims to enhance the ability of tax officials in calculating taxes from oil and gas sector. Hopefully the government's desire to hold an independent surveyor could be realized, so the optimization of tax revenue from oil and gas sector better.
More aboutSurveyor role in optimizing the tax revenue from mining sector

GEOEYE?

Diposting oleh Unknown

GeoEye is the creation of the earth observation satellites are satellites that was launched on 6 September 2008 sponsored by Google and National Geospatial-Intelligence Agency (NGA) of California, the United States. Earth observation satellites is GeoEye commercial satellite imagery with the highest resolution images that exist in Earth orbit today.

GeoEye satellite has two satellites that GeoEye-1 and GeoEye-2. GeoEye-1 satellite launched by GeoEye Inc. who had also been issued IKONOS satellite which is sub-meter satellite a world first. GeoEye-1 is equipped with advanced technologies, used also by the artificial satellite company General Dynamics. GeoEye-1 satellite construction will cost $ 502 million a bear is Google and the NGA as its main sponsor. There is a Google logo is displayed on the side of the Delta II rocket is a rocket that launched GeoEye.

ITT Corporation is a maker of cameras on the satellite sensor is then in January 2007 sent to General Dynamics to be integrated into the GeoEye-1. Aerial photographs Kutztwon University Campus is the first image produced by the GeoEye-1 after the calibration process is complete.


Software Specification and GeoEye
GeoEye satellite capable of producing images with resolution up to 0.41 meters with a black-and-white sensor and 1.65 meter for a color sensor. Image resolution capability is owned by GeoEye is ideal for large scale mapping. GeoEye's orbit at an altitude of 681 km above the Earth and moving at 7.5 miles per hour.
GeoEye can map natural and man-made features to within 3 meters of the actual location on the earth because of GeoEye has a three-meter accuracy. In other commercial imaging system, this level of accuracy never achieved before, ever.
GeoEye has a very high accuracy and can collect a lot of images on a single pengorbitan. ITT was designing these satellites to be able to shoot multiple targets at all orbits. To get a thorough imaging, satellite was programmed in order to move forward, back, right and left of the target.

Frequency GeoEye Pengorbitan
GeoEye to orbit with a frequency of 15 times a day and takes 98 minutes to orbit. This satellite is also used to complement the IKONOS satellite system, but in the process of collecting GeoEye satellite images much faster which is 40% faster to collect black-and-white and 25% faster for color images. Both of these satellites in a single day can synthesize 1 million sq. km imaging results.
In black and white mode, GeoEye can perform imaging of an area of ​​700 000 km2 or area of ​​the city of Texas, while in color mode can GeoEye imagery covering 350 000 km2 - with the help of the camera optical telescopes, detectors, focal plane and the digital processor.


GeoEye Satellite function on Google
GeoEye satellite used in the web-based map service Google Earth and Google Maps. In addition to Google, GeoEye also provides data with high resolution imaging results for the interests of the United States through the NGA.


More aboutGEOEYE?

Privacy Policy

Diposting oleh Unknown


Privacy Policy for http://gis-mapping-system.blogspot.com/ 

If you require any more information or have any questions about our privacy policy, please feel free to contact us by email at fatriyanto@gmail.com. 

At http://gis-mapping-system.blogspot.com/, the privacy of our visitors is of extreme importance to us. This privacy policy document outlines the types of personal information is received and collected by http://gis-mapping-system.blogspot.com/ and how it is used. 

Log Files
Like many other Web sites, http://gis-mapping-system.blogspot.com/ makes use of log files. The information inside the log files includes internet protocol ( IP ) addresses, type of browser, Internet Service Provider ( ISP ), date/time stamp, referring/exit pages, and number of clicks to analyze trends, administer the site, track user’s movement around the site, and gather demographic information. IP addresses, and other such information are not linked to any information that is personally identifiable. 

Cookies and Web Beacons 
http://gis-mapping-system.blogspot.com/ does use cookies to store information about visitors preferences, record user-specific information on which pages the user access or visit, customize Web page content based on visitors browser type or other information that the visitor sends via their browser. 

DoubleClick DART Cookie 
.:: Google, as a third party vendor, uses cookies to serve ads on http://gis-mapping-system.blogspot.com/.
.:: Google's use of the DART cookie enables it to serve ads to users based on their visit to http://gis-mapping-system.blogspot.com/ and other sites on the Internet. 
.:: Users may opt out of the use of the DART cookie by visiting the Google ad and content network privacy policy at the following URL - http://www.google.com/privacy_ads.html 

Some of our advertising partners may use cookies and web beacons on our site. Our advertising partners include ....
Google Adsense


These third-party ad servers or ad networks use technology to the advertisements and links that appear on http://gis-mapping-system.blogspot.com/ send directly to your browsers. They automatically receive your IP address when this occurs. Other technologies ( such as cookies, JavaScript, or Web Beacons ) may also be used by the third-party ad networks to measure the effectiveness of their advertisements and / or to personalize the advertising content that you see. 

http://gis-mapping-system.blogspot.com/ has no access to or control over these cookies that are used by third-party advertisers. 

You should consult the respective privacy policies of these third-party ad servers for more detailed information on their practices as well as for instructions about how to opt-out of certain practices. http://gis-mapping-system.blogspot.com/'s privacy policy does not apply to, and we cannot control the activities of, such other advertisers or web sites. 

If you wish to disable cookies, you may do so through your individual browser options. More detailed information about cookie management with specific web browsers can be found at the browsers' respective websites. 
More aboutPrivacy Policy