LRDAS Coverage Study

Long Range Detection & Assessment System (LRDAS) is a category of radar sensors and long-range cameras that keep an eye on activities near or on important infrastructure regions including airports, seaports, military bases, international borders, oil & gas refineries, and other key industries, among others. Given that it has capacities ranging from a few hundred meters to more than 10 kilometers, the LRDAS is recommended in situations where long-range surveillance is necessary. The time available to respond to possible threats is increased since incursion is detected from a great distance, allowing employees to recognise the problem and make a security choice before it reaches the boundary. Using the most cutting-edge monitoring and sensor technologies available, AARMTech helps in stopping issues before they start, and we're always working to improve our security design procedure. Our objective is to offer a completely integrated, end-to-end solution that offers creative answers to emerging threats and technologies, regardless of the scope and complexity of the project.

How we conduct Long Range Detection & Assessment System (LRDAS)

This  section  briefly  outlines  the  methodology  that  was  utilised  to  carry  out  the  RADAR  coverage analysis.

• Before conducting the site  survey collect all the  necessary drawings and  documents such as  Plant  layout  drawings,  Existing  RADAR  location  details,  RADAR  installation  height, beam width, tilt, coverage etc.
• Conduct the site survey and verify & record existing RADAR system details.
• Conduct the feasibility  study  for  new  RADAR  locations  to  be  proposed  by  visually inspecting  the  area  and  record-all  the  newly  built  environment  such  as  buildings  and storage tanks etc. that may obstruct the visibility,
• Visually inspected data shall be taken into consideration while simulating the visibility analysis tool  with  google  map  support,  since    google  map  could  not  be  updated  with newly  built environment obstructions.   
• Simulate  the  Visibility  analysis  tool  for  existing  RADAR  area  coverage  by  inputting  data such as radar coverage range, beam width, target object height, etc. and record the output.
• Visually inspected data shall be taken into consideration while simulating the visibility analysis tool  with  google  map  support,  since    google  Maps  could  not  be  updated  with newly  built environment obstructions.

• Simulate  the  Visibility  analysis  tool  for  existing  RADAR  area  coverage  by  inputting  data such as radar coverage range, beam width, target object height etc. and record the output.
• Repeat the simulation by changing the installation location, RADAR height and tilt  etc., and by taking into consideration of newly built environment obstructions.
• Record only those simulated outputs which do not have continuous blind spot areas.
• Select the RADAR locations from the recorded output which cover maximum project area with the least blind spot.
• If  the  Terrain  or  the  built  environment  with  a single  RADAR  may  obstruct  visibility  and  not meet  the  project  requirement,  repeat  the  simulation  for  multi-RADAR  with  different locations.  The  “shadow”  cast  by  an  obstruction  from  the  perspective  of  one  RADAR  or camera may be covered by another RADAR or camera.  
• Export the selected simulated visibility analysis tool output to Google Earth Pro.
• Simulate  the  Google  Earth  pro  tool  for  Elevation  details  by  adding  ‘PATH’  which  goes through the blind spot area of the RADAR. Record the result.

The tool we use for Long Range Detection & Assessment System (LRDAS)

The software used to prepare the Rada Coverage study is SPx and Google Earth Pro. SPx RADAR Coverage Tool uses  a combination of terrain information  and line-of-sight calculations to estimate the visibility of  targets at  given heights, as seen  by  RADARs at  user-specified locations. Because the  tool  is  using  geometric  line-of-sight  calculations,  the  coverage  map  generated  may  equally apply to optical sensors located at the same sites.

Radar Coverage Study

Shuttle RADAR Topography Mission (SRTM) terrain data is used to calculate the RADAR visibility. This  dataset  covers  the  whole  world,  with  a  resolution  of  approximately  30m.    Additionally,  the professional  version  of  the  software  includes  support  for  using  DTED  data  files  as  the  source  of terrain  data.    For  even  higher  definition  requirements,  for  example  airport  installations  or  camera security projects, a special version of the software is available that provides GeoTIFF data support.  RADAR Coverage Tool Geo supports the use of GeoTIFF digital surface model (DSM) data, which may have sub-meter elevation data spacing.   

SPx RADAR Coverage Tool allows RADAR coverage information to be calculated for up to 10 RADAR sites,  simultaneously,  and  for  the  resultant  coverage  map  to  be  exported  to  a  KML  file.    This enables the coverage map data to be displayed in third party GIS systems that support KML format, such as Google Earth.  

• CCTV Surveillance Coverage Study
• PA/GA Coverage Study
• Radio Coverage Study
• Wi-Fi Coverage Study
• LRDAS Coverage Study
• Security Risk Management
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