Abstract: The invention relates to a preparation process for a compound (I) or a salt thereof, in which Q, X*, Y, Z, R, R1, R2 and R3 are as defined in claim 1, which comprises a) ammonolyzing a comp. (II) in which Hal=halogen atom to give (III), pref. (a1) carrying out the reaction in an organic solvent mixture (org. solv. mixture) comprising (1) opt. halogenated aromatic hydrocarbons and (2) polar aprotic solvents, in a weight ratio of solv. (1): solv. (2) of 20:1 to 1:1, (b) phosgenating the comp. (III) with phenylsulfonyl isocyanate of the formula (IV), pref. (b1) in the case X*=halogen, carrying out the reaction with phosgene in an org. solv. in the presence of isocyanates R?-NCO as catalyst, where R?=(subst.) hydrocarbon, with or without addition of an amine base, (c) reacting the resulting compound (IV) in org. solv. with the aminoheterocycle H2N-Het (Het=heterocycle as in (I)) to give the comp. (I) or a salt thereof, pref. (c1) carrying out the reaction in a solv. mixture of opt. halogenated arom.

Abstract: An acoustic apparatus for ascertaining wind speed and direction at various altitudes which uses back scattered acoustic waves which are formed from acoustic pulses of predetermined frequencies, are transmitted on at least two planes and the frequency spectrum and power of back scattered signals are measured, the received signal is divided into a number of discrete frequency channels and these divided signals are used to provide a velocity indication at various altitudes at sequential time intervals.