A multifrequency radar signal is considered. It employs M subcarriers simultaneously. The subcarriers are phase modulated by different sequences that constitute a complementary set. Such a set can be constructed, for example, from the M cyclic shifts of a perfect phase-coded sequence of length M (e.g., P4). The subcarriers are separated by the inverse of the duration of a phase element by yielding orthogonal frequency division multiplexing (OFDM), well known in communications. The signal exhibits a thumbtack ambiguity function with delay resolution of t/sub h//M. The power spectrum is relatively flat, with width of M/t/sub h/. The signal can be constructed by power combining M fixed-amplitude signals. The resulting signal, however, is of variable amplitude.

Notas/Comentarios de Félix Pérez:
En el artículo se analiza con gran detalle y profundidad el radar que utiliza formas de onda internamente codificadas utilizando las técnicas OFDM, ampliamente utilizadas en comunicaciones.

Especificaciones

  • Autor/es: N. Levanon.
  • Año: 2000
  • Publicado en: Record of the IEEE 2000 International Radar Conference [Cat. No. 00CH37037], 12-12 May 2000, Pages: 683-688.
  • Idioma: Inglés
  • Formato: PDF
  • Contribución: Félix Pérez Martínez.
  • Palabras clave: Circuitos y sistemas, Proceso de señal, Sensores
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