Fourier coefficients for range identification in FMCW radar systems

Shel D. Dalton

doi:10.1117/12.354603

20 July 1999 Fourier coefficients for range identification in FMCW radar systems

Shel D. Dalton

Proceedings Volume 3704, Radar Sensor Technology IV; (1999) https://doi.org/10.1117/12.354603
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Frequency-modulated continuous wave radar systems have been used for many years to determine range and velocity in a wide variety of military and commercial applications. The modulation waveform can be sinusoidal, triangular or sawtooth. Each form has its advantages, but, since the triangular and sawtooth modulation can be approximated with a sinusoidal modulation, the analysis in this paper will concentrate on sinusoidal modulation. For moving targets, the envelope of the signal used for determining the Doppler frequency is a function that varies according to the range. If the mixing is performed with a sine wave that is the n^th multiple of the modulation frequency, then the envelope is an n^th-order Bessel function that varies according to the range. These envelopes can be used on their own to determine range based on tabulated values of the Bessel function. A second approach is to use the difference between two Bessel functions of different orders to identify a certain range. The choice of Bessel functions depends on the carrier frequency and the target range. Amplifiers can be used to modify the identification range.

Citation Download Citation

Shel D. Dalton "Fourier coefficients for range identification in FMCW radar systems", Proc. SPIE 3704, Radar Sensor Technology IV, (20 July 1999); https://doi.org/10.1117/12.354603

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available