Synthetic aperture radar (SAR) compensating for ionospheric distortion based upon measurement of the group delay, and associated methods


A synthetic aperture radar (SAR) compensates for ionospheric distortions based upon measurement of the group delay, particularly when operating in the VHF/UHF band. The SAR is based upon a multi-input multi-output (MIMO) technique for estimating the effective ionospheric conditions, which is referred to as the group delay approach. The group delay approach is divided into a 1-dimensional (range) approach and a 2-dimensional (range and cross-range) approach. The group delay measures the effective or observed TEC, which is used to reduce the ionospheric distortion.


< Radar beam steering with remote reflectors/refractors

< Gun-launched rolling projectile actuator

> Integration of a semi-active laser seeker into the DSU-33 proximity sensor

> Adjustable mount for a model airplane engine

~ 00194