The moving parts of a target induce additional features in the Doppler frequency spectrum in ISAR imaging. These features are called micro-Doppler, are rich in information, and appear as variations to the central Doppler frequency that are often periodic and non-linear in nature. We extract a new model based on measurements and simulations of the micro-Doppler returned by both stationary and mo...

the compressive sensing (CS) based ISAR imaging has exhibited high-resolution imaging quality when faced with limited spatial aperture. However, its performance is significantly dependent on the number of pulses and the noise level. In this paper, from the perspective of promoted sparsity constraint, a novel reconstruction model deducted from Meridian prior (MCS) is proposed. The detailed compa...

In inverse synthetic aperture radar (ISAR) imaging, micro-motion structures on the target will induce additional time-varying frequency modulations to the radar echoes. Due to the disturbance of these mechanical vibration or rotation parts, it will be difficult to obtain a well-focused ISAR image of the target using conventional translational motion compensation methods. To solve this problem, ...

We report on some recent experiments with SML embedded into the Isabelle/Isar theory and proof language, such that the program text may again refer to formal logical entities via antiquotations. The meaning of our antiquotations within SML text observe the different logical environments at compile time, link time (of theory interpretations), and runtime (within proof procedures). As a general d...

Multi-band inverse synthetic aperture radar (ISAR) fusion imaging technology can effectively improve the range resolution without incurring high hardware cost. The coherent phase between sub-bands is a prerequisite to achieve multi-band ISAR imaging. Here, joint approach of compensation and high-resolution proposed compensate incoherent obtain images. First, an estimation model based on sparse ...

Attitude estimation is a significant task for monitoring noncooperative spacecraft in orbit. Inverse synthetic aperture radar (ISAR) an effective method to obtain the structure, size, and attitude of spacecraft. Most existing methods based on ISAR images generally rely characteristic point matching or rectangular feature among images. They often need high quality images, so robustness usually p...

We address the “multicore problem” for mathematical assistants with full proof checking, with special focus on Isabelle/Isar and its main SML platform Poly/ML. On the one hand, working with explicit definitions, statements, and proofs requires significant runtime resources, so the question of parallel checking is really relevant. On the other hand, the inherent structure of formal theories prov...

We discuss the general concept of calculational reasoning within Isabelle/Isar, which provides a framework for high-level natural deduction proofs that may be written in a human-readable fashion. Setting out from a few basic logical concepts of the underlying meta-logical framework of Isabelle, such as higher-order unification and resolution, calculational commands are added to the basic Isar p...

IsaPlanner [1] is a proof planner for the generic interactive theorem prover Isabelle [3]. It provides a framework for the encoding and debugging of proof planning techniques. A higher order version of rippling has been implemented and augmented with generalisation and lemma calculation critics [2]. The proof planning process is interleaved with the execution of the resulting proof plans, thus ...

The Infrared Sea surface temperature Autonomous Radiometer (ISAR) was specifically developed for the validation of satellite SSTskin temperature data products, in particular for the Advanced Along Track Scanning Radiometer (AATSR). Two ISAR instruments have, since March 2004, been deployed on a continuous (one on, one off) basis on the P&O ferry M/V Pride of Bibao, which sails between Portsmout...