Array Shape Self-Calibration for Large Flexible Antenna

Santori, Agnès; Barrère, Jean; Chabriel, Gilles; Jauffret, Claude; Medynski, D.

doi:10.1109/aero.2007.353067

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…For this purpose, the project focuses on the analysis and compensation of these non-desirable motions by means of mechanical sensors and auto-calibration techniques [4].…”

Section: ) High Altitude Flightsmentioning

confidence: 99%

ONERA SAR facilities

Plessis

Nouvel

Baqué

et al. 2010

2010 IEEE Radar Conference

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This paper provides an overview of the airborne SAR systems developed by the French Aerospace Lab ONERA over the past five years. The first system, called SETHI, is presented in the first section. It has been developed according to the standard FAR25 applied to civil application. The main improvement compared to the previous ONERA airborne radar system RAMSES is that the antennas are located into two pods compatible with small aircrafts like the Falcon 20. This podbased configuration allows the easy integration of any kind of payloads under the single certification of the pods by authorities. The second section describes the BUSARD concept, dedicated to UAV-like payloads. A special attention is set on its Ka-band radar payload. Finally, we describe the RAMSES NG project, with a new installation on board a Falcon 20 aircraft and we expose the latest X-band developments. The three systems are summarized on overview tables.I.

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“…For this purpose, the project focuses on the analysis and compensation of these non-desirable motions by means of mechanical sensors and auto-calibration techniques [4].…”

Section: ) High Altitude Flightsmentioning

confidence: 99%

ONERA SAR facilities

Plessis

Nouvel

Baqué

et al. 2010

2010 IEEE Radar Conference

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“…A strain based approach was introduced in [6] to instantaneously determine beam direction shifts and actively compensate for them. Another approach for self calibration of beam direction was proposed in [7], which is reliant on multiple sensors to predict deformation using a two step Constant Modulus approach.…”

Section: Introductionmentioning

confidence: 99%

Passive Compensation of Beam Shift in a Bending Array

Seidel

Rowe²,

Ghorbani³

2012

PIER C

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An array of conformal antenna structures mounted on a bending surface exhibits a substantial shift in main beam direction. This paper demonstrates a method to compensate for the induced beam shift by using the change in length of the surface produced by the bend. This change in length modifies the capacitance in a composite right/left-handed transmission (CRLHTL) line, causing a phase shift in the line. A potential implementation is proposed that can correct an 18 • beam shift with only an induced change in length of 0.144%. The paper establishes that this passive compensation concept is feasible and provides significant benefits over active compensation systems in terms of weight reduction, cost, simplification and the ability to operate in radio silence.

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