Abstract
<jats:p>Interferometric Synthetic Aperture Radar is a powerful measurement technique which can provide critical information about changes to the Earth’s surface with applications to detect, monitor, and forecast hazards. Recently, multistatic extensions of current or planned InSAR systems using passive cofliers has been suggested as a cost-effective means to provide new measurements such as the 3D surface deformation vector with atmospheric delay removal. In this work, several architectures for these low-cost passive cofliers utilizing either NISAR or ROSE-L as transmitters in a SIMO configuration are proposed and evaluated. Multistatic radar performance simulations demonstrate adequate deformation results using a 12 x 2.5 m reflector antenna with two squinted feeds for a ROSEL coflier mission, and an 8 m parabolic reflector antenna with a flat-top shaped beam for NISAR. Architectures for coflying with each transmitter is detailed in terms of radar performance metrics, and the coflier trade-space is discussed and evaluated.</jats:p>