Son muy utili/ados en vchiculos acr

Son muy utili/ados en vchiculos acrcos у maritimos. Pcrmiten medir una vcloci- dad absoluta con rcspccto a la ticrra. Sc basan cn cl principio de Doppler por el cual se sabc quc cuando una onda se refleja en una supertlcie que se estd moviendo con rcs- pecto al emisor, se producc un despla/amicnto cn frccuencia quc pucdc medirsc para suministrar una medida de la velocidad del movimiento.
En la ilgura 7.26 sc ilustra cl principio dc funcionamicnto (Everett. 1995):
La velocidad del tcrreno con respecto al vehiculo VA se obtiene a partir dc la velo¬cidad Vp Doppler medida scgun:

siendo Fp cl despla/amicnto en frecuencia obscrvado (despla/amicnto Doppler). F0 la frecuencia de transinisiön. с la vclocidad dc la luz y a cl dngulo dc incidencia.
En la practica existen ondas reflejadas dc difercntes frccucncias, por lo quc cs ne- cesario un filtrado previo para qucdarsc con las frccucncias mas representatives y me¬dir F„. Existen diferentes causas de errorcs en la medida. entre las que cabc mcncio-

Kết quả (Anh) 1:

are used / ed in maritime у acrcos vchiculos. pcrmiten-ity measure an absolute vcloci rcspccto to ticrra. sc based cn cl Doppler principle by which when a wave QUC sabc is reflected in that std supertlcie rcs moving relative to the emitter is a displacement Producc / cn amicnto pucdc QUC frccuencia medirsc to provide a velocity measurement movement.
7.26 ilgura sc in first dc cl illustrates funcionamicnto (everett. 1995):
tcrreno speed relative to the vehicle is obtained from the veil dc doppler measure ¬ ity vp scgun: cl fp

being displaced / frequency amicnto obscrvado (displacement / amicnto doppler). transinisiön frequency f0. vclocidad с the light and cl dc dc dngulo incidence.
in practice there frccucncias difercntes dc reflected waves, so QUC cs filter necessary prior to qucdarsc with Representatives and I frccucncias more dir ¬ f ". There are various causes of the extent errorcs. among which cabc mcncio-

Kết quả (Anh) 2:

They are very used/damaged in vchiculos acrcos and maritime. Measure a vcloci Pcrmiten- with absolute rcspccto to ticrra. Sc based cn cl Doppler principle by which sabc respondentmay when a wave is reflected in a supertlcie std that is moving with RCS - with respect to the issuer, it was a production displaced/amicnto cn frccuencia respondentmay pucdc medirsc to provide a measure of the speed of the movement.
In the sc ilgura 7.26 illustrates cl principle dc development (Everett. 1995) :
tcrreno speed with respect to the vehicle will be obtained from the veil¬ dc capacity Vp Doppler extent scgun:

being Fp cl displaced/amicnto obscrvado frequency (displaced/amicnto Doppler). F0 the frequency of transinisiön. The с vclocidad dc light and cl dngulo dc incident.
In practice there are waves reflected dc difercntes frccucncias, respondentmay cs ther a pre-filter for the frccucncias qucdarsc with more representatives and i¬dir F". There are different causes of errorcs to the extent, the cabc mcncio-