- Research Article
- Open Access
Minimum Variance Signal Selection for Aorta Radius Estimation Using Radar
EURASIP Journal on Advances in Signal Processing volume 2010, Article number: 682037 (2010)
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.
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Solberg, L., Hamran, SE., Berger, T. et al. Minimum Variance Signal Selection for Aorta Radius Estimation Using Radar. EURASIP J. Adv. Signal Process. 2010, 682037 (2010). https://doi.org/10.1155/2010/682037
- Optimal Region
- Publisher Note
- Aortic Blood
- Optimum Signal