Active SAR Antennas: Design, Development, and Current Programs

Capece, P.

doi:10.1155/2009/796064

Cited by 26 publications

(12 citation statements)

References 5 publications

(6 reference statements)

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“…COSMO-SkyMed [11] (Constellation of small satellite for Mediterranean basin Observation) is the largest Italian investment in space systems for Earth Observation, funded by Italian Space Agency (ASI), Italian Ministry of Defense (MoD) and industry contribution (Alenia Spazio) with high-resolution capability. The system consists of a constellation of four low earth orbit (LEO) mid-sized satellites, each is equipped with a multi-mode high-resolution SAR operating at X band and fitted with particularly flexible and innovative data acquisition and transmission equipment.…”

Section: Cosmo-skymedmentioning

confidence: 99%

Smart antennas for space-borne synthetic aperture radars

et al. 2015

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This paper discusses smart antennas for spaceborne synthetic aperture radar (SAR). First, some recent development in smart antennas for space-borne SAR is reviewed. Then, the paper presents a low-cost space-borne SAR system using digital beam forming on receive. The smart antenna system is also discussed, and some results are shown. The antenna system, consisting of a parabolic reflector and multi-feed array, is designed and optimized for dual-band dual-polarized digital beam-forming performance. The operating frequencies are at X and Ka bands with the center frequency of 9.6 and 35.75 GHz, respectively. The stacked dipoles and square patches with parasitic elements are employed as the feed elements at X and Ka bands. Dual-band antenna arrays are combined in the same aperture, which not only reduce the aperture of the feed array, but also coincide the center of dual-band feed arrays.

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Section: Cosmo-skymedmentioning

confidence: 99%

Smart antennas for space-borne synthetic aperture radars

et al. 2015

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“…The steering can be accomplished electronically (an electronically-steered array (ESA)) or mechanically (a gimbal-mounted antenna) [3,4]. CSX and TSX are strip-mapmode SARs with limited along-track, or azimuth, pointing capabilities utilizing their phasedarray antenna designs [5]. Their azimuth-pointing capabilities allow a higher spatial resolution (in azimuth), pseudo-spotlight-mode collection.…”

Section: Image Formationmentioning

confidence: 99%

Bistatic SAR: Imagery & Image Products.

Yocky¹,

Wahl²,

Jakowatz³

2014

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While typical SAR imaging employs a co-located (monostatic) RADAR transmitter and receiver, bistatic SAR imaging separates the transmitter and receiver locations. The transmitter and receiver geometry determines if the scattered signal is back scatter, forward scatter, or side scatter. The monostatic SAR image is backscatter. Therefore, depending on the transmitter/receiver collection geometry, the captured imagery may be quite different that that sensed at the monostatic SAR. This document presents imagery and image products formed from captured signals during the validation stage of the bistatic SAR research. Image quality and image characteristics are discussed first. Then image products such as two-color multi-view (2CMV) and coherent change detection (CCD) are presented.

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“…This requires the capability of scanning the beam in the elevation plane. In this respect phased array is the preferred antenna technology because of the higher degree of flexibility [1]. Main drawbacks are the costs associated to the large number of active modules and the complexity of the overall antenna architecture.…”

Section: Introduction and Problem Definitionmentioning

confidence: 99%

Introducing sparsity in a spaceborne Ka-band SAR antenna

Jacobs¹,

Bekers²,

Monni³

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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This paper focuses on the introduction of sparsity in a planar spaceborne SAR antenna array operating in Kaband. Given the different requirements in azimuth and elevation, and the large size of the array, sparsity is introduced along the two dimensions separately. While sparsity along the azimuth dimension was considered in an earlier paper, the application of density tapering along the elevation dimension is described here and preliminary results are reported.Index Terms-synthetic aperture radar, phased array antenna, sparse array.I.

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Active SAR Antennas: Design, Development, and Current Programs

Cited by 26 publications

References 5 publications

Smart antennas for space-borne synthetic aperture radars

Smart antennas for space-borne synthetic aperture radars

Bistatic SAR: Imagery & Image Products.

Introducing sparsity in a spaceborne Ka-band SAR antenna

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