Bhuvan is manoeuvre to display the diversity of Indian imaging capabilities including the thematic information derived from imagery is of vital importance to common man. Bhuvan an ambitious project of ISRO to take Indian images and thematic information in multiple spatial resolutions to people with a web portal through easy access to information on basic natural resources in the geospatial domain. Bhuvan showcases Indian images by the superimposition of the IRS satellite imageries on 2D/ 3D virtual globe.
This geoportal owned by the government of India, operated on Indian remote sensing (IRS) series of satellites. Along this data sets from satellites, it also coney and iterate real-time data sets from Automatic Weather Stations (AWS), Potential Fishing Zone (PFZ) information, disaster support related information like forest fire alerts, periodic agricultural drought assessment etc. This web-application which combines information from various sensors, platforms and multi temporal images to compute thematic information, interpreted from such imagery as a vector layer. Bhuvan enables net-centric visualisation of digital geospatial India allowing individuals to experience the fully interactive terrain viewing capabilities. Apart from visualisation, Bhuvan facilitates user to browse, select and download satellite data and products through NOEDA. Through Thematic Services it also facilitates to select, browse and query thematic datasets and consume as OGC web services. Bhuvan brings a whole lot of uniqueness in understanding our own natural resources whilst presenting beautiful images and thematic information generated from varieties of geospatial data.
Enlisting the feature of Bhuvan geoportal, it provides the general public, students, scientists, policy makers leverage to use, download and analyse the wide (two or three dimensional) range integrated data in multi-linguals graphic user interface without any additional resources. This encourages the students to download specified satellite data and explore new data sets along with creation and sharing personal resources like data sharing.
Bhuvan has various options to be chosen by the user like two dimensional or three dimensional EO visualisation, free download option named open data archive and EO derived product called climate and environment. The maps and OCG services like thematic services, disaster management support system, ocean services and create a map or GIS. Portal is equipped with modules from central government dashboard called as Governance/ central ministries (g-governance dashboard) which encloses sub modules like Hailstorm, chaman: Coordinated Programme on Horticulture Assessment and Management using Geoinformatics, horticulture, pest surveillance, plantation, Pradhan Mantri Krishi Sinchayee Yojana (PMKSY), Rashtriya Krishi Vikas Yojana, Portal for geotagging of location where Yoga activities is been performed, Institutionalized Geo-tagging for inventory and best practices in governance (Andhra Pradesh), Monitoring of polling station during election in AP, Disaster Management Portal for HUDHUD Cyclone, NTR Vaidya Seva Trust, Initiated a g-Governance service portal for decision making (Andhra Pradesh Arunachal Pradesh and Assam), Tourism GIS (Vijayawada). Application sector enclosed seven main categories and twenty-five sub-categories. Main categories consist of forestry, agriculture, E-governance, water, tourism, urban and rural. Last module is of special application equipped with data discovery, decision support dashboard, histological products, image gallery, international disasters, multilingual translation, online shapefile creation, OSCAT- 3D, smart tracking and suvidha.
By integrating with other existing applications, Bhuvan is poised to become a spatially based collection of profound information, coupled with facts and knowledge. Blogs, user groups, social networking sites and forums are enabled for users to share ideas and experiences, and post case studies also.
1. Browsing the site:
The Indian Space Research Organization provides the facility to view and use the downloaded data to explore a set of a map-based content. Use cases are broadly differentiated among government, academic, private and organizational use. Number of options and dimensional visuals adds the value into usage of the portal to study and analyse.
2. Site home screen:
This is the visual of home screen of portal. This encloses the key features provided by the ISRO via portal. This article included the details information and steps regarding downloads of LISS= III data.
3. Open data archive:
This portal provides the user to access open data archive facilities under three categories of i) Satellite/Sensor, ii) Theme/Product, iii) Program/Projects and seven sub-categories under satellite or sensor category as mentioned below:
Resourcesat-1/ Resourcesat-2: LISS-III
Resourcesat-1/ Resourcesat-2: AWiFS
Along with this portal this window shows the map of the India with national and international borders.
Here we will select the category of satellite/ sensor and sub-category of Resourcesat-1/ Resourcesat-2: LISS-III
When category and sub-categories are selected the web-application will display related documents to download and view, here we will get the Resourcesat-1 LISS-III Broacher, Resourcesat-1 LISS-III users handbook, Resourcesat-1 LISS-III orthorectification process.
Here we need to select the area under study or analysis.
5. Area selection:
In the next step we need to select the particular are under the study, demo window screen has chosen the Pune as area under analysis. This will pin the location on right window with location pin. Next, we need to select the tile. Tile selection will be initiated when start button located at left bottom of tiles window. After clicking start click the tile situated over area under study or analysis.
6. Tile selection:
In in this step tile selection will be carried out in order to view and download details of that particular tile that is area enclosed by that tile. Once you recognized the tile of the area under your study click the start button located at the left bottom of the window. This will initiate the tile selection. After selecting tile click on next to proceed further.
7. Download index:
Next click will divert the user to download window where tabular tiles available for selected area are represented. Here thumbnail and Metadata options are provided which will show metadata sheet and thumbnail view of bounding box.
8. Log-in window:
In order to download the data from geoportal user needs to hold an account. This account will help you to access data in offline manner also.
If you don’t have an account and try to download the data then portal will pop-up a warning saying, ‘You need to log-in before downloading the data’.
After clicking ‘Ok’ floating log-in window will appear on left side of window.
Imgae below shows the floating log-in window. Along with sign-in options, other four options like Change password, forgot password, new user registeration and help option if activation link is not received.
What is activation link is explained in details of new user registeration.
9. Account registration:
Once the ok button is clicked user will be directed towards the account creation window. Here user needs to fill all the mandatory fills and then submit the information. After the submission user will get account activation link on provided mail id. In that mail user needs to activate an account and set up the password.
When password will be set then user can log-in from the log-in option on right corner of window. After the successful log-in automatic downloading will be started.
10. Metadata sheet:
Metadata sheet will open up in floating window, shown in image below.
11. Thumbnail view:
This option provides the compressed small sized image which has iterated large data set at the backend.
12. Downloading the data:
Once the downloading started portal will send the feedback window displaying download will start with user name and optional way to start download if download has not stared.