An Improved Imaging Algorithm for High-Resolution and Highly Squinted One-Stationary Bistatic SAR Using Extended Nonlinear Chirp Scaling Based on Equi-Sum of Bistatic Ranges

An Imaging Method for Arc Array Bistatic SAR With an Accelerated Moving Transmitter

“…In the spaceborne-airborne SAR imaging mode, back projection (BP) algorithm [9]- [12], nonlinear chirp scaling (NLCS) algorithm [13]- [15] and azimuth spectrum reconstruction algorithm [16] are modified and proposed to handle the spaceborne-airborne SAR data with the complicated doubleroot slant range. In the airborne-airborne BiSAR imaging case, Chirp Scaling (CS) [17]- [20], Keystone Transform (KT) [21], [22] and Legendre polynomials algorithm [23] are introduced and modified to compensate the complicated platform motion. However, all these modes are with a traditional receive antenna under the equal space-interval sampling in azimuth.…”

Focusing High Maneuvering Bistatic Forward-Looking SAR With Stationary Transmitter Using Extended Keystone Transform and Modified Frequency Nonlinear Chirp Scaling

“…W ITH the development of radar technology, synthetic aperture radar (SAR) has been widely used in military and civilian fields because it can obtain two-dimensional (2-D) high-resolution images of static scene at long distances and under any weather conditions [1]- [5]. However, monostatic SAR cannot image the forward-looking area due to inherent geometric limitation, which restricts many scene applications, such as autonomous landing, autonomous navigation, missile terminal guidance, etc [6]- [8]. Due to the increasing demand in these applications, bistatic SAR (BiSAR) was proposed.…”