A Method to Extend the Estimation Range of the Existing Time-Domain Doppler Centroid Estimators

In this letter, we use the summation-by-parts formula as a simple tool to extend the estimation range of a certain class of the already existing correlation-based Doppler centroid estimators. The resulting estimators are as robust as the original ones but cover a much larger estimation range of about 50% of the pulse-repetition frequency. Two examples with simulations are provided to demonstrate the benefits of the proposal.     

Holiday bioclimatology: a study of Palma de Majorca,Spain

To evaluate the thermal conditions in Palma de Majorca various human comfort indices have been used (equivalent-temperature, cooling power, energy balance). The calculations and classification of cold stress and heat load show clear biometerological differences in the yearly pattern which can be of help in planning a holiday, especially for elderly people and the chronically ill. Finally certain symptoms are listed which provide the physician with an idea of which diseases can be positively influenced by the climate in the individual seasons.     

A MATLAB toolbox for attitude determination with GPS multi-antenna systems

In this paper a MATLAB toolbox for determining the attitude of a rigid platform by means of multiple non-dedicated antennas using global positioning system is presented. The programs embedded in this toolbox cover the RINEX data analysis, single point positioning, differential positioning, coordinate conversion, attitude determination, and other auxiliary functions. After forming the baselines through double-differenced (carrier phase smoothed) code observables, the attitude parameters are obtained by applying the direct attitude computation and the least squares attitude estimation. The theoretical background is summarized, and some hints regarding the software implementation are given in the paper. Moreover, improvements yielding an expanded functionality are proposed.