Spatial Signature Estimation with an Uncalibrated Uniform Linear Array
نویسندگان
چکیده
منابع مشابه
Spatial Signature Estimation with an Uncalibrated Uniform Linear Array †
In this paper, the problem of spatial signature estimation using a uniform linear array (ULA) with unknown sensor gain and phase errors is considered. As is well known, the directions-of-arrival (DOAs) can only be determined within an unknown rotational angle in this array model. However, the phase ambiguity has no impact on the identification of the spatial signature. Two auto-calibration meth...
متن کاملMultichannel Detection and Spatial Signature Estimation with Uncalibrated Receivers
A problem occuring in radio astronomy is the detection and cancellation of spatially correlated interfering signals entering via the sidelobes of the telescopes in an array. A complicating factor is that the noise powers can be different at each telescope. For the case that the sensors are uncalibrated, we formulate the detection problem as a test on the covariance structure, state the GLRT for...
متن کاملSpatial signature estimation for uniform linear arrays with unknown receiver gains and phases
The problem of spatial signature estimation using a uniform linear array (ULA) with unknown receiver gain and phase responses is studied. Sufficient conditions for identifying the spatial signatures are derived, and a closed-form ESPRITlike estimator is proposed. The performance of the method is investigated by means of simulations and on experimental data collected with an antenna array in a s...
متن کاملDetection and estimation in the presence of signals with uncalibrated spatial signature
This paper considers the problem of signal detection and direction of arrival (DOA) estimation in situations where signals that generate an uncalibrated array response are present. Situations such as this often arise in airborne direction finding when skywave multipath is present. A parameterization that accounts for “uncalibrated” spatial signatures (USS) is proposed, and the identifiability o...
متن کاملLinear Depth Estimation from an Uncalibrated, Monocular Polarisation Image
We present a method for estimating surface height directly from a single polarisation image simply by solving a large, sparse system of linear equations. To do so, we show how to express polarisation constraints as equations that are linear in the unknown depth. The ambiguity in the surface normal azimuth angle is resolved globally when the optimal surface height is reconstructed. Our method is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensors
سال: 2015
ISSN: 1424-8220
DOI: 10.3390/s150613899