- Forfatter
- Solberg, Lars Erik
- Hamran, Svein-Erik
- Berger, Tor
- Balasingham, Ilangko
- Publisert
- 2010
- Emneord
- Radar
- Kreft
- Permalenke
- http://hdl.handle.net/20.500.12242/761
- https://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/761
- DOI
- 10.1155/2010/682037
- Samling
- Articles
- Description
- Solberg, Lars Erik; Hamran, Svein-Erik; Berger, Tor; Balasingham, Ilangko. Minimum Variance Signal Selection for Aorta Radius Estimation Using Radar. EURASIP Journal on Advances in Signal Processing 2010 s. -
-
- 515065.pdf
- Size: 663k
- Sammendrag
- This paper studies the optimum signal choice for the estimation of the aortic blood pressure via aorta radius, using a monostatic radar configuration. The method involves developing the Cramér-Rao lower bound (CRLB) for a simplified model. The CRLB for model parameters are compared with simulation results using a grid-based approach for estimation. The CRLBs are within the 99% confidence intervals for all chosen parameter values. The CRLBs show an optimal region within an ellipsoid centered at 1 GHz center frequency and 1.25 GHz bandwidth with axes of 0.5 GHz and 1 GHz, respectively. Calculations show that emitted signal energy to received noise spectral density should exceed for a precision of approximately 0.1 mm for a large range of model parameters. This implies a minimum average power of 0.4 . These values are based on optimistic assumptions. Reflections, improved propagation model, true receiver noise, and parameter ranges should be considered in a practical implementation.