Additions and Corrections to "SimplifiedSolution for a Class of Fading Memory Filters"'

Morgan's work on partially adaptive arrays [1] andthe summary of that given in [2], publications whichwere not known to the author, elaborate on the role of thecorrelation coefficient p of the auxiliary phasor vectorscharacterizing the performance of a partially adaptiveantenna, particularly in determining the output noisepower bound.

It is still worthwhile noting, however, and this wasemphasized in my paper considering the strong jammercase, that for pi < 1 the sign response of the mainantenna to the closely spaced jammers is of equalimportance to the system degradation as the correlationcoefficient. Even a further reduction of the jammerspacing, that is, an increase in IPI < 1, moving them intothe same sidelobe, may cause less resolution problemsthan a configuration where two closely spaced jammers,characterized by a correlation coefficient lower than theabove, are received in sidelobes of different signs. Thisin fact is a further consequence of the expression (21)derived in [1]. Morgan's interpretation of equation (9b) ofmy paper as a bound of noise enhancement is not correctsince, as it is stated clearly, equation (9b) applies onlywhen the sidelobe signs are different.

KLAUS KRUCKER

FGAN-FHPD-5307 Wachtberg-WerthhovenWest Germany

This work was done under Order RE-182,Amendment 452.

On page 356, right column, ninth line from thebottom, Section V should be Section IV.

On page 359, the first line in APPENDIX A shouldread: Derivation of (1 1)-(13) from Sorensen's recursive

'Statman, IEEE Trans. Aerosp. Electr. Syst., AES 23, (May 1987),355-360.

Emendation to "Design of Switching Regulatorwith Combined FM and On-Off Control"'

On page 727:

Amplitude of BC = - 2V01L

should read

Amplitude of AB =c

Vi

(3)

(2)

REFERENCES

[1] Morgan, D.R. (1978)Partially adaptive array techniques.IEEE Transactions on Antennas and Propagation, AP-26, 6(Nov. 1978), 823-833.

[2] Monzingo, R.A., Miller, T.W. (1980)Introduction to Adaptive Arrays.New York: Wiley, 1980, pp. 502-506.

1Lee & Chen, IEEE Trans. Aerosp. Electr. Syst., AES 22,(November 1986), 725-731.

Correction to "A New Representation ofAdaptive Antenna Pattern"1

In Equation (5): The subscript j should be 1 in twoplaces (ci & S*) and the > upper limit should be n,.

In Equation (8): The Si should be S,.

Following Eq. (8) in (a) and (b) the 0 should read (p.

In Equation (10): The c, should be cl.

Equation (1 1) should read:

g:= (g(O1), ..., g(o))

In Equation (15): The ei should be e1.

0018-9251/87/0700-0598 $1.00 C 1987 IEEE'Worms, IEEE Trans. Aerosp. Electr. Syst., AES 23, (January

1987), 138-140.

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS VOL. AES-23, NO. 4 JULY 1987

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