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公开(公告)号：US20230009797A1
公开(公告)日：2023-01-12
申请号：US17782065
申请日：2020-12-03
Applicant: THALES
Inventor： Rodolphe COTTRON , Pascal CORNIC , Yoan VEYRAC
IPC: G01S13/88 , G01S13/933 , G01S13/95 , G01S13/91
Abstract: A method and a device for measuring altitude of an aircraft relative to a point on the ground, said aircraft carrying a radar system comprising a directional antenna to transmit a radio frequency signal along a aiming axis, including. controlling the transmission of a radiofrequency signal along the axis, calculating received powers as a function of radial distance on a sum channel and an elevation deviation channel, calculating tilt angular deviation values, determining an estimator of the radial distance of the aircraft relative to the point on the ground intercepted by the aiming axis as a function of at least one zero crossing of the angular deviation measurement in a selected area of the angular deviation measurement curve, calculating an aircraft altitude relative to said point on the ground as a function of the estimator of the radial distance and the elevation angle of the aiming axis.
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公开(公告)号：US20190391225A1
公开(公告)日：2019-12-26
申请号：US16450645
申请日：2019-06-24
Applicant: THALES
Inventor： Pascal CORNIC , Nicolas Porez , Patrick Garrec
Abstract: The invention relates to a method for determining an angle of arrival of a received radioelectric signal implemented by a receiving antenna system including either one rotating antenna having at least two receiving channels, or two rotating antennas with a same speed each having a receiving channel, and having different antenna diagrams. The method includes, in the operational phase, the following calculating and storing a series of ambiguous angle error measurement values obtained from receiving amplitude values of a radioelectric signal coming from an emitting source on said first and second receiving channels, each angle error measurement value being representative of a ratio between receiving amplitude values on said first and second receiving channels, and corresponding to an angular deviation relative to a reference angular value; calculating a convolution function on said angular range tween said series of ambiguous angle error measurement values and a series of theoretical angle error measurement values of said receiving channels previously calculated and stored, determining an angle of arrival of said received radioelectric signal as a function of an estimate of a maximum of said calculated convolution function.
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3.发明申请公开(公告)号：US20170336450A1
公开(公告)日：2017-11-23
申请号：US15524226
申请日：2015-09-24
Applicant: THALES
Inventor： Pascal CORNIC , Patrick LE BIHAN , Joël FILLATRE
IPC: G01R23/167 , G01R23/163
CPC classification number: G01R23/167 , G01R23/163 , G01S7/021
Abstract: A digital receiver comprising at least two reception pathways, the method carries out a digital inter-correlation of the signals obtained as output from at least two filters of different central frequencies and different ranks, the rank and the central frequency of the filters being chosen as a function of a determined frequency-wise search domain. For a determined search domain, the various sampling frequencies of the reception pathways are chosen so that the ambiguous frequencies resulting from the spectral aliasings vary as a monotonic function of the true frequency of the signals.
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公开(公告)号：US20210132187A1
公开(公告)日：2021-05-06
申请号：US17084495
申请日：2020-10-29
Applicant: THALES
Inventor： Rodolphe COTTRON , Pascal CORNIC , Yoan VEYRAC
Abstract: A method for processing coherent MIMO radar processing DDMA waveforms and includes NTX transmitters and NRX receivers, comprising the steps of a) generating waveforms on at most NTX transmitters, the waveforms, modulo the pulse repetition frequency Fr, being identical from one transmitter to the next, to within a phase ramp specific to each transmit path; b) generating, for at least one receiver, a Range-Doppler representation of the echoes of the transmitted waveforms, where, for each receiver, the echoes of a transmitter over a plurality of range cells occupy at least one frequency cell in the Doppler spectrum, called signal band, each signal band being specific to one of the transmitters, the placement of the signal bands in the Doppler spectrum being determined according to the phase ramp applied to each transmitter, the waveforms being generated so as to leave a portion of the Doppler spectrum between two signal bands unoccupied; c) identifying the transmitter corresponding to each signal band, on the basis of the Range-Doppler representation of the echoes of the transmitted waveforms. The method is particularly suitable for the millimetre band (W band), for automotive radar applications or applications of radar on board aeroplanes or drones, for the detection of fixed or moving target relative to the carrier.
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公开(公告)号：US20190086510A1
公开(公告)日：2019-03-21
申请号：US16011626
申请日：2017-01-04
Applicant: THALES
Inventor： Jean-Michel QUELLEC , Pascal CORNIC , Jean-Paul ARTIS
IPC: G01S7/02
CPC classification number: G01S7/023 , G01S7/021 , G01S7/2813 , G01S7/36
Abstract: The present invention concern a method for eliminating in a radar signal a first signal coming from an on-board radar (10), the method comprising the steps of: providing a replica of the signal emitted by the on-board radar (10), receiving a signal, the received signal being the sum of a first signal depending on the signal emitted by the on-board radar (10) and of a second signal independent of the signal emitted by the on-board radar (10), the first signal being a linear combination of elementary signals each having an amplitude coefficient and a delay relative to the signal emitted by the on-board radar (10), determining the amplitude coefficients and the delays of the elementary signals of the first signal, and eliminating, in the processed received signal, the first signal to obtain the second signal.
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Patent Agency Ranking
公开(公告)号：US20180128899A1
公开(公告)日：2018-05-10
申请号：US15799446
申请日：2017-10-31
Applicant: THALES
Inventor： Pascal CORNIC , Patrick GARREC , Richard MONTIGNY
CPC classification number: G01S7/021 , G01S7/032 , G01S7/285 , G01S13/02 , G01S2013/0254
Abstract: A receiving device comprises an analogue reception filter designed for a given frequency band included in the entire operating band of radar, the device further comprising a digital filter able to separate the received signals depending on their frequency, one portion of the frequency band of the given frequency band allocated to the radar reception function and another portion allocated to an RESM reception function.
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公开(公告)号：US20160131754A1
公开(公告)日：2016-05-12
申请号：US14904405
申请日：2014-07-15
Applicant: THALES
Inventor： Pascal CORNIC , Patrick LE BIHAN , Régis LEVAUFRE
CPC classification number: G01S13/4454 , G01S3/74
Abstract: A device for detecting electromagnetic signals comprising an array receive antenna having N radiating elements and M receive channels downstream of the receive antenna, M less than N, the pointing directions of the antenna, equal to the radiating elements, obtained by adaptive beamforming and regularly spaced apart, comprises: switching the M receive channels onto the radiating elements in successive sequence cycles, M radiating elements connected to the receive channels with each sequence, the same radiating element, being the reference element, connected to the receive channels for all sequences, one cycle completed when all radiating elements are connected to one of the receive channels; for each sequence, estimating two-by-two spatial correlations of the signal received on the reference channel and the signals received on the other M-1 receive channels, then estimating the spatial power spectral density in N incoming directions based on a coherent sum of N correlation terms obtained.
Abstract translation: 一种用于检测电磁信号的装置，包括具有N个辐射元件的阵列接收天线和在接收天线下游的M个接收信道，M小于N，天线的指向方向等于通过自适应波束成形获得的辐射元件，并且规则间隔 包括：以连续的顺序循环将M个接收信道切换到辐射元件上，将与每个序列连接到接收信道的M个辐射元件相同，相同的辐射元件作为参考元件，连接到所有序列的接收信道，一个 当所有辐射元件连接到接收通道之一时，循环完成; 对于每个序列，估计在参考信道上接收的信号和在另一个M-1个接收信道上接收的信号的二乘二空间相关性，然后基于相干和的相干和，估计N个入方向中的空间功率谱密度 获得N个相关项。
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8.发明申请TRANSPONDER FOR DOPPLER RADAR, TARGET LOCATION SYSTEM USING SUCH A TRANSPONDER 有权多普勒雷达传感器，使用这种传感器的目标位置系统公开(公告)号：US20140225761A1
公开(公告)日：2014-08-14
申请号：US14175620
申请日：2014-02-07
Applicant: THALES
Inventor： Patrick GARREC , Pascal CORNIC , Régis LEVAUFRE
CPC classification number: G01S13/74 , G01S7/4052 , G01S13/751 , G01S13/872 , G01S13/913 , G01S2007/4082
Abstract: A transponder, able to equip a cooperative target facing a Doppler radar, includes at least one receiving antenna able to receive a signal transmitted by said radar and a transmitting antenna able to retransmit a signal. The signal received by the receiving antenna is amplitude-modulated before being retransmitted by the transmitting antenna to produce a variation of the radar cross-section of the target, the variation triggering a frequency shift between the signal transmitted and the signal received by the radar comparable to a Doppler echo. The transponder applies notably to the field of radars, more particularly for collaborative systems also operating at low velocity or nil velocity. It applies for example to assisted take-off, landing and deck-landing of drones, in particular rotary-wing drones, as well as manned helicopters.
Abstract translation: 能够装备面向多普勒雷达的协作目标的应答器包括能够接收由所述雷达发射的信号的至少一个接收天线和能够重发信号的发射天线。 接收天线接收到的信号在由发射天线重传之前进行幅度调制，以产生目标雷达横截面的变化，触发发射信号与雷达接收信号之间频移的变化可比 到多普勒回波。 应答器特别适用于雷达领域，特别适用于还以低速或零速度运行的协同系统。 例如，它适用于无人机，特别是旋翼无人机以及载人直升机的辅助起飞，着陆和甲板着陆。
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公开(公告)号：US20240027578A1
公开(公告)日：2024-01-25
申请号：US18357075
申请日：2023-07-21
Applicant: THALES
Inventor： Yoan VEYRAC , Pascal CORNIC , Renan LE GALL , Gonzague BERTIN DE LA HAUTIERE
Abstract: The invention relates to a radar system comprising:
a frequency synthesizer, configured to generate a modulated local signal (Sf0+Δf0);
at least one frequency multiplier, configured to supply an intermediate-frequency local signal (Sf_inter+Δf_inter) to each emission channel (8) and to each reception channel, the intermediate-frequency local signal (Sf_inter+Δf_inter) being a fractional multiple of the modulated local signal (Sf0+Δf0);
a plurality of emission frequency transposition components, the emission frequency transposition components being synchronized with one another by the modulated local wave (Sf0+Δf0);
a plurality of reception frequency transposition components, the reception frequency transposition components being synchronized with one another by the modulated local signal (Sf0+Δf0), the reception channels being configured to demodulate the intermediate-frequency reception signal (Sf_inter_Rx+Δf_inter_Rx) using the intermediate-frequency local signal (Sf_inter+Δf_inter).-
公开(公告)号：US20230417893A1
公开(公告)日：2023-12-28
申请号：US18247868
申请日：2021-09-14
Applicant: THALES
Inventor： Pascal CORNIC , Yves AUDIC , Renan LE GALL , Yoan VEYRAC
IPC: G01S13/42
CPC classification number: G01S13/426 , G01S2013/0254
Abstract: A Doppler radar with ambiguous electronic scanning, using an active antenna comprising an array of elementary transmission antennas and an array of elementary reception antennas with the same angular opening. The arrays have the same radiation plane. The transmission array is ambiguous with a number of ambiguous lobes within said angular opening of said elementary antennas greater than or equal to 2. The reception array comprises at least one ambiguous lobe within said angular opening. The arrays are arranged so that the product of the transmission and reception radiating patterns only produces a single main beam within the field defined by said angular opening. The coverage of said angular field by said radar obtainable by:
forming at the transmission antenna radiating patterns that are focused within a field limited to the transmission ambiguity field;
simultaneously forming several reception radiating patterns focused at reception in the ambiguous transmission directions.
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