Multiple phases sectionalized modulation (MPSM) jamming is a kind of blanket method against linear frequency (LFM) radar, which can produce range-controllable noise-like effect by dividing the signal into multiple subsections in time domain and modulating different on each subsection. However, partial relationship between parameters complicated, decrease controllability MPSM effect. By transforming problem optimization effect, an algorithm based genetic (GA) proposed to solve this paper. In...

A novel imaging method called relative coherent processing (RCP) was proposed, it can be used to enhance the quality and spatial resolution of single channel SAR images. The basic principle detailed analyzed main formulas were given. Simulations executed real data acquired by RadarSat-1 satellite processed all results proved that, approach effective; lobe point spread function (PSF) sharpened range improved. It has a great promising in improving image qualities.

An imaging algorithm with relative coherent processing (RCP) and compressed sensing (CS) was proposed used for frequency hopping inverse synthetic aperture radar(FH-ISAR) imaging. It can be to enhance the quality of FH-ISAR images. The basic concept its principle detailed analyzed main formulas were given. Simulations executed all results proved that, correct effective; precision range alignment greatly improved processing, image blurring caused by target maneuvering reduced sensing. has a...

Recognition of Synthetic Aperture Radar (SAR) operation mode plays an important role in SAR countermeasure, and possesses quite significant sense both theory applications. Characteristics three different modes are analyzed detail the Doppler history signal is concerned. An algorithm by extracting Centroid with time frequency distribution (TFD) proposed to retrieve mode. Simulations executed all results have been proved that, correct effective. It provides effective way recognition.

Novel frequency domain extracted method (FDEM) to obtain high range resolution profile (HRRP) for stepped synthetic aperture radar (SAR) is proposed in this paper, and the mathematical principle formulas of new HRRP obtaining idea combined with classical fast Fourier transform (FFT), chirp <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>z</mml:mi></mml:mrow></mml:math> (CZT), single point (SPFT) are deduced, analyzed, compared detail. Based on data,...

Passive radar systems based on navigation satellite reflected signal achieve the target detection and location by receiving processing very weak Globe Navigation Satellite System (GNSS) efficiently. During multichannel of signals, digital beamforming (DBF) has been introduced to form automatically array antenna beam pointing optimize signals. Finally, simulations have results performance algorithm simulation, show that is efficient enough goal detecting signal.

In order to reduce the layover region in traditional single-angle synthetic aperture radar (SA-SAR) image, a multi-angle (MA-SAR) image fusion algorithm based on optimal local index is proposed. By utilizing every two images of N SA-SAR obtained from different observation angles under certain combination criteria obtain candidate set with C2N images, proposed calculates pixel each and selects constitute final MA-SAR image. The can effectively simulation results have verified effectiveness algorithm.

Innovative frequency hopping inverse synthetic aperture radar (FH-ISAR) imaging simulator was presented in this paper aided with the real collected (ISAR) data conventional constant carrier frequency. These obtained by ISAR used as input dataset to start FH-ISAR Imaging simulation, and a series of virtual dataset, which simulated, or reproduced based on were given parameters such pulse numbers, bandwidth, code, etc. This can also complete processing clear images non-cooperative targets has...

The converse beam cross sliding spotlight SAR (CBC SAR) imaging processing was investigation in this essay. geometry and properties of classical standard inverse were reviewed the CBC operation mode concerned with unified factor, both can be realized by choosing a proper factor. Imaging investigated using data blocking based fast back projection algorithm point spread functions gained. All results proved that obtain images azimuth resolution higher than strip map SAR, scene extension larger...

Image registration process principally consists of two steps, i.e. tie patches mapping and resampling the slave image. Accurate efficient master image samples is crucial importance since it guarantees quality follow-up products, which focus this paper. Specifically an automatic hierarchical approach has been adopted in SAR images, coarse firstly realized by performance cross-correlation to achieve pixel scale accuracy, then interpolation shifts a series localized carried out align with...

Based on the model of linear frequency diversity array synthetic aperture radar (LFDA-SAR) multiple carrier (MCF) signal, space-variant range offset characteristic echo is derived in detail and an enhanced fast back-projection algorithm proposed. By splitting original SAR data matrix into sub blocks, image formation combination recursively, EFBPA effectively rectify defocus, geometric distortion problems traditional imaging results greatly reduces computational complexity BPA. All verify...