公开(公告)号：US11300678B2

公开(公告)日：2022-04-12

申请号：US16528219

申请日：2019-07-31

Applicant: THALES

Inventor： Thierry Mazeau ,  Patrick Garrec

IPC: G01S13/935 ,  G01S13/34 ,  G01S7/35

Abstract: The method carries out a measurement of the distance from the ground of an aircraft by undertaking the emission of waveforms making it possible to obtain, after demodulation, of the signals received in return and sampling of the demodulated signals at a frequency Féch, two signals E*0(t) and E*1(t), taking the form of two frequency ramps, of respective slopes K0 and K1, of respective passbands B0 and B1 and of respective durations TE0 and TE1, the N-point FFT spectral analysis of which is carried out. The values of the durations TE0 and TE1 as well as those of the passbands B0 and B1, are defined in such a way as to be able to determine, on the basis of the spectra of the signals E*0(t) and E*1(t), a measurement of non-ambiguous distance d1 covering the maximum distance dmax to be instrumented and an ambiguous distance d0 exhibiting the desired distance resolution. The distance d to be measured being determined by combining these two measurements.

公开(公告)号：US10649068B2

公开(公告)日：2020-05-12

申请号：US15691544

申请日：2017-08-30

Applicant: THALES

Inventor： Patrick Garrec ,  Jean-Michel Hode ,  Richard Montigny

IPC: G01S7/282 ,  G01S7/03 ,  H03K3/00 ,  H03C3/08 ,  H03K5/04 ,  G01S7/02

Abstract: A wave transmitted by an antenna made up of an array of radiating elements, two pulse waves are transmitted, each modulated by a phase shift law known as modulation phase shift, the phase shifts being in opposition, a first wave being transmitted by a sub-array of radiating elements referred to as odd and the second wave being transmitted by a second sub-array of radiating elements referred to as even, the two sub-arrays being interleaved, the transmitted wave being the combination of the first wave and the second wave.

公开(公告)号：US10340942B2

公开(公告)日：2019-07-02

申请号：US15768815

申请日：2016-10-10

Applicant: THALES ,  UNIVERSITE DE BORDEAUX ,  INSTITUT POLYTECHNIQUE DE BORDEAUX ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Patrick Garrec ,  Richard Montigny ,  François Rivet ,  Yann Deval ,  Yoan Veyrac

IPC: H03M3/00 ,  H03K4/02 ,  H03M1/74 ,  H03M1/12

Abstract: An analog signals generating device comprises a current pump controlled by a control code generated by a module for calculating the digital code with shaping of noise. The calculation module receives as input a digital signal representative of the analog signal to be generated and comprises at least one quantizer and a quantization error compensating stage. The current pump comprises two groups of at least one electric current generator and two groups of at least one switching means, the switching facilities being controlled by the control signal and causing the electric currents to flow between the electric current generators and the inputs of a differential amplifier exhibiting a predominantly capacitive input impedance and connected in series between the two groups of switching means.