Geospatial Analysis for Water Monitoring
How it works
Satellite images taken from optical or thermal cameras/sensors can work only in day light and do not work in case of cloud cover. We use SAR satellite images in L band or C band to perform our analysis using reflectance values including special spectral signature for water. SAR images can penetrate the clouds and normal vegetation to reach to the surface of the earth. Hence, we can conduct survey in all weather, day and night including when there is a heavy cloud cover.
Overall Monitoring Process
|Scenario||Is leak detectable?||Chances of false alarm?||Remark|
|Normal weather||Major leak: Yes
Minor leak: Yes
Major leaks can be identified by monitoring the ponding. Minor leaks can be identified by monitoring the change in soil moisture (in the case of barren soil).
|Light rain (no ponding/inundation)||Major leaks: Yes
Minor leaks: No
Significant leaks causing ponding conditions can be identified. Minor leaks ( leading to the change in soil moisture only) can not be identified.
|Heavy rain (with ponding/inundation)||Major leaks: No
Minor leaks: No
Since heavy rain will cause ponding in several parts compared to leaks which are usually isolated events, there will be no false alarms. However, leaks during this period can not be detected.
|Snow||Minor leaks: No
Major leaks: Yes
During the melting phase of snow, it is similar to the light rain case and minor leaks can not be identified.
|Leak from other sources
(e.g. leak from water tanker over pipeline)
|Major leaks: Yes
Minor leaks: Yes
Leaks from any sources will be identified as the leaks, will require additional information to minimize the false alarms.
Unaffected by weather, traffic, noise, time.
Interactive dashboards to visualize the leakage hotspots and drive directly to location in concern
Priority Leaks can be targeted quickly reducing potential damage and claims.
More efficient use of human and financial capital resources as field engineer has to survey key selected locations only
Due to the high confidence in the location precision, the confirmation process of whether a finding is a leak or not takes very less time
The entire system can be surveyed up to multiple times rather than once every 1-5 years or less.