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Robin Rajamäki

4 accepted papers

2025

Jointly Optimal Array Geometries and Waveforms in Active Sensing: New Insights Into Array Design via the Cramér-Rao Bound

ICASSP 2025accepted

This paper investigates jointly optimal array geometry and waveform designs for active sensing. Specifically, we focus on minimizing the Cramér-Rao lower bound (CRB) of the angle of a single target in white Gaussian noise. We first find that several array-waveform pairs can yield the same CRB by vir…

Cited by 0SourceScholar
2024

Effect of Beampattern on Matrix Completion with Sparse Arrays

ICASSP 2024accepted

We study the problem of noisy sparse array interpolation, where a large virtual array is synthetically generated by interpolating missing sensors using matrix completion techniques that promote low rank. The current understanding is quite limited regarding the effect of the (sparse) array geometry o…

Cited by 0SourceScholar
2023

To Regularize or Not to Regularize: The Role of Positivity in Sparse Array Interpolation with a Single Snapshot

ICASSP 2023accepted

We study single-snapshot nested array interpolation with positive sources. The problem of sparse array interpolation is traditionally cast as a low-rank Toeplitz/Hankel matrix completion problem from partial observations. In recent work, we provided the first necessary and sufficient guarantees for…

Cited by 0SourceScholar