OSV-Radar

OSV-Radar ExampleOSV-Radar™ (see datasheet) is JRM's physics-based, real-time RF sensor scene simulator.  Utilizing the popular OpenSceneGraph toolkit to load materially-encoded targets and terrain, OSV-Radar integrates JRM's SigSim and SenSim run-time libraries to predict radiometrically-correct 2D radar sensor
imagery, under arbitrary weather conditions and spatio-temporal viewing locations.

OSV-Radar is available as a binary application for Windows and Linux OS.  An SDK version is also available with Source code examples to provide a fully configurable and scalable radar solution.

Physics-Based

OSV-Radar Synthesizes physics-based signatures on-the-fly from a single material-property encoded 3D database of terrain, cultural features, atmosphere and targets.  User-defined physical transmitter & reciever parameters (carrier frequency, PW, PRF, polarizations, gain Distributions, power, etc.), and complex, polarized RCS data for each entity and material type, combined with atmospheric transmission & noise, are all employed to compute the at-aperture recieved power density.  Entity motion and weather/wind produce corresponding Doppler effects.  Finally, energy-conserving binning algorithms duplicate real radar electronics operations to form the final image.

Fully Correlated

Because OSV-Radar runs on the same spectral, material-property-encoded terrain and target database used for EO/IR wavelengths, the results are automatically fully correlated with other OSV sensor modes(e.g NVG, MWIR, LWIR).

Multiple Modes

OSV-Radar supports a variety of active mode outputs, including SAR (strip and Spot), ISAR, and Wide-Area Scan with PPI display.  Terrain areal RCS parameters are stored in the same material data files as are used in EO/IR modeling.  RF propagation is based on RADTRAN calculations, using the same atmospheric profile specifications as for MODTRAN.

SAR and PPI radar mode displays Visible vs. ISAR mode

 

Signature Effects

OSV-Radar includes a wide variety of real-time effects including:

  • SAR Shadows & Leading edge brightness
  • Down-Range/Cross-range resolution effects
  • Entity motion and wind-driven Doppler
  • RF path attenuation, atmospheric scattering, and absorption noise
  • Vehicle radar cross-sections from imported RCS or FIELD files (user-supplied)
  • Terrain areal RCS from Ulaby-Dobson parameters embedded in spectral material peoperty files (JRM MTL)
  • Complex scattering and coherent summation
  • Polarization
  • Choice of gain distribution and directivities, for transmitter and receiver separately
  • Sensor system noise as function of bandwidth and temperature
  • Doppler spatial offset

 

Frequency Ranges

OSV-Radar provides support for the following bands:

  • L-band: 1-2 GHz
  • S-band: 2-4 GHz
  • C-band: 4-8 GHz
  • X-band: 8-12 GHz
  • Ku-band: 12-18 GHz
  • Ka-band: 30-40 GHz
  • W-band: 90-100 GHz

Actual Radar Image             OSV Radar Image

Sensor Controls

OSV-Radar allows control over the following sensor inputs:

  • Carrier frequency (GHz)
  • Pulse Width (µs)
  • Pulse repetition frequency-PRF (Hz)
  • Transmitter polarization angle
  • Transmitter gain pattern & directivity
  • integration path length (m)
  • Transmitter power (W)
  • System temperature Saturation S/N ratio
  • Display type (power, effective RCS)
  • PPI sweep rate & contact threshold
  • Doppler color-coding

*products contain no defense articles, classified, or export controlled (ITAR) data.