Effect of Baseline Separation Distance on GMT Velocity Estimation using Monopulse GMTI Technique in case of SAR

  Vandana AR,  Dr CR Byra Reddy

This paper discusses the effect of Baseline separation distance on GMT (Ground Moving Target) velocity estimation using Monopulse GMTI (Ground Moving Target Indication)technique in case of airborne SAR. The simulation results of the same has been presented.Unambiguity inestimated target velocity due to increase in baseline separation distance between the antenna phase center > λ/2 in case of monopulse SAR is discussed. The baseline separation distance impacts the target velocity due to under sampling of target phase information. It also impact the squint doppler which adds to the estimated target Doppler thereby effecting the ground moving target velocity estimation. Doppler spread in range due to the relative motion of target and platform velocity is not considered here as it does not have much impact on velocity estimation using Monopulse GMTI method.

Keywords- SAR, GMTI, Monopulse, Baseline separation distance, Monopulse Doppler squint, SNR

Unique Identification Number - IJEDR1702327
Page Number(s) - 2100-2107
Pubished in - Volume 5 | Issue 2 | June 2017
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Vandana AR,  Dr CR Byra Reddy,   "Effect of Baseline Separation Distance on GMT Velocity Estimation using Monopulse GMTI Technique in case of SAR", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.2100-2107, June 2017, Available at :http://www.ijedr.org/papers/IJEDR1702327.pdf