The SARENKA SAR system - Experimental results of ISAR imaging

Abstract

This paper presents the syste processing aspects and measurement results o Synthetic Aperture Radar (SAR) named presented system is a C-band radar develop Warsaw University of Technology. The main was to develop a low-cost, small-size and lowhigh resolution dedicated for small aircrafts unmanned aerial vehicles (UAV). For th SARENKA SAR system using the Frequ Continuous Wave (FMCW) concept was design first field tests of the system were done using on a lake as a target. As a result Inverse SAR the target were obtained. In this paper the pre this experiment are presented and discussed.

Micro‐Doppler signatures of helicopters in multistatic passive radars

“…Based on the calculation of the rotation speed, a simple rotation model was applied. For all possible rotor positions a short time ISAR image was created using the FFT approach [22, 27–29]. Only the negative part of the spectrum was used for ISAR image creation, which corresponds to the imaging of the receding blades only.…”

C-band SAR radar trials using UAV platform: Experimental results of SAR system integration on a UAV carrier

“…The main technical parameters/features are presented in Table 1. The SARenka system was built in several versions using different digital components for radar signal generation and signal acquisition [3][4][5]10]. In the UAV trials the version with a DDS and ADC board based on the Universal Software Radio Peripheral (USRP) device was used [10].…”

“…The requirements for the SAR system strongly depend on the type of platform on which it is to be installed. In the case of an SAR system mounted on UAVs the most important requirements include: size, weight and power consumption, and they are usually stricter than in the case of SAR systems mounted on relatively huge and powerful airborne platforms [3][4][5]13,14]. Another requirement relates to SAR signal processing methods which should be robust for unstable UAV flights.…”

“…To meet all the above conditions, in 2012 the authors from the Warsaw University of Technology decided to develop an inexpensive, small, lightweight and low power consuming SAR radar for UAV applications. The developed radar, named SARenka, was successfully tested using various types of moving platforms, such as cars and small aircraft [3][4][5]. The ultimate goal of the trials was to test the radar using UAV platforms.…”

Meta-Learner-Based Stacking Network on Space Target Recognition for ISAR Images

“…At present, the research of ISAR imaging technology continues to deepen, and the generated ISAR images can reflect the fine structure characteristics of components such as solar panels, engines and antennas of the target, which is the technical basis for space target classification based on ISAR images [4]. The classification of ISAR images of space targets belongs to fine-grained recognition, which pays more attention to the subtle differences between various satellites.…”