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Intercept en la Playa del Condado Puerto Rico

Miré hacia el Caribe desde la playa del Condado, imaginé que Ponce de León estaba parado en el mismo lugar, midiendo el ángulo del sol con su astrolabio. Ponce de León conocía su posición exacta porque le preguntó al Taíno Cacique Agueybaná dónde se encontraban exactamente en la galaxia. Así pudo calcular su intercepción. Tomé […]

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Castillo San Felipe del Morro

Recientemente visité el Castillo San Felipe en San Juan Puerto Rico. Nunca he visto una fortificación tan enorme e impenetrable como esta. Me imaginé que era un soldado español en el siglo XVI y que el pirata Drake apareció alrededor de la Punta Escabron. Tomé el rumbo de la brújula y disparé el cañón, ajustándome […]

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Telecommunications

Dirac Delta Function – δ(t)

Introduction The unit impulse or Dirac Delta function δ(t) is an essential building block of modern telecommunications, similar in importance to the FFT that was examined in the previous post. The function came about as a result of research done by the British Physicist Paul Dirac on the modelling of a point charge (Ref.1). It […]

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Telecommunications

FFT – A Telecommunications Revolution

The FFT or Fast Fourier Transform was described by Cooley & Tukey in their 1965 paper “An Algorithm For The Machine Calculation of Complex Fourier Series” (Ref.1). The method has earlier roots in the works of Carl Gauss and others (Ref.2). The purpose of the FFT is to reduce the calculation complexity of the DFT […]

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Golden Globe Race 2018 – 50 Year Anniversary

Introduction The Golden Globe Race 2018 commemorates the original Sunday Times Golden Globe 1968, a non-stop, single handed round the world yacht race.  It was won by Sir Robin Knox-Johnston in Suhaili. Nine contestants entered and only Knox-Johnston finished. Bernard Moitessier decided not to finish but go around the world for a second time! (Ref.1). […]