Problem in coregistration of TSX-TDX dataset for smaller baselines

Microwave Toolbox Interferometry
#1

Hello, I am working on multipass SAR interfermetry using TDX and TSX dataset. For larger baseines, the coregistration is done perfectly whereas for smaller perp baselines, the coregistration is not proper. There is good amount of shift. Following are the additional information:

  1. Master image: 13 Feb 2015 (TSX)
    Slave image: 09 Dec 2014, perp baseline: -91.83 m (TDX)

  2. Master image: 13 Feb 2015 (TSX)
    Slave image: 20 Dec 2014, perp baseline: -151.90 m (TDX)

Kindly help me to troubleshoot the problem.

Regards,