Cost-effective method for determining a pulse response of a high

Details Cost-effective method for determining a pulse response of a high Cost-effective method for determining a pulse response of a high

1997-04-18

1998-09-08

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

For correlation

342194, 342195, 342196, 342205, 342159, 342162, 342203, G01S 7292

Patent

active

058051074

ABSTRACT:
For less expensive estimation the impulse response x.sub.MOS of a high-resolution, band-limited radar channel in a radar station operating with an expanded transmitted pulse a(t), from a received signal e, over which a correlated or uncorrelated additive interference signal n can be superimposed, with the use of knowledge about the spread code c and the use of a channel estimator with which a so-called linear, optimum unbiased estimation of the radar channel impulse response x.sub.MOS is performed in a time range covering M range gates of interest, the linear, optimum estimation in the unbiased channel estimator is modified in such a way that the pulse response x.sub.MOS of the band-limited radar channel is determined according to the basic principle of a multiplication of the sampled received signal e and an inverse estimation matrix A.sub.E.sup.-1. The matrix A.sub.E is formed by the extension of the rectangular matrix represented by the components c.sub.i of the spread code c to form a quadratic matrix that circulates to the right, that is, the modified, optimum unbiased estimation:

REFERENCES:
patent: 4454510 (1984-06-01), Crow
patent: 5173706 (1992-12-01), Urkowitz
patent: 5247303 (1993-09-01), Cornelius et al.
patent: 5448243 (1995-09-01), Bethke et al.
Felhauer et al., "Otimum Estimation, A Favourable Alternative to Correlation Methods in Radar Systems Using Expanded Waveforms", AEU, vol. 46, No. 1, pp. 32-37, 1992.

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