Abstract: A Fast Fourier Transform based digital radiometer providing a frequency contiguous set of noise temperature measurements to characterize an atmospheric vertical temperature profile. The radiometer also has Doppler correction to account for velocity of a vehicle on which the radiometer is located and direction changes of a scene being measured.

Abstract: A Fast Fourier Transform based digital radiometer providing a frequency contiguous set of noise temperature measurements to characterize an atmospheric vertical temperature profile. The radiometer also has Doppler correction to account for velocity of a vehicle on which the radiometer is located and direction changes of a scene being measured.

Abstract: An adaptive processor which uses the successive range and Doppler outputs of a conventional matched-filter to improve the signal-to-noise ratio for non white noise/clutter. The adaptive processor minimizes the output for a given range and Doppler cell with the constraint that the response to signals returning with specified range and Doppler offsets, with respect to the center of the range-Doppler cell, each have specified values. Weights are derived which can be applied to range-Doppler outputs in the neighborhood of the range-Doppler cell to minimize its output subject to the constraints. The weights depend on an estimate of the cross-covariance matrix of the various outputs of the range-Doppler cells that are to be weighted. The constraint parameters are specified in terms of the ambiguity function of the transmitted waveform.

Abstract: A prospective user of a supportive seating system is initially measured in an approximately correct seating posture to determine which one of respective pluralities of modular preformed seat and back bases can best accommodate him. Elements of firm resilient, sculptable material are selected from precut modularly sized and shaped pluralities of the same, for assembly and attachment to the seat and back bases to create approximate support topologies. The user is seated in the support system and, based on his responses, the support topology is sculpted to custom-fit his specific needs. A temporary covering is applied to the seat and back modules. After a trail period, the quality of the custom-fit is reviewed for further sculpting as needed, and a permanent cover is then attached to each module.