摘要:
A radar system for discriminating between sources of radar interference and targets of interest. The system includes a transmitter for transmitting radar signals into a region, a receiver for receiving return signals of the radar signals returned from within the region, and a processor for processing the return signals to discriminate between return signals returned from a first object and return signals returned from a second object where the return signals from the second object comprise both zero and non-zero Doppler components and interfere with the return signals from the first object. The radar system is operable for discriminating between the return signals when the return signals are received at a distance from the second object which is less than a proximity limit based on the geometry of the object.
摘要:
Dispositif radar aéroporté multifonction (50), caractérisé en ce qu 'il comprend une pluralité de modules d'antennes d'émission (510) et/ou de réception (520) fixes vis-à-vis de l'aéronef, disposés sensiblement au niveau de la surface de l'aéronef de manière à former des faisceaux en émission et en réception, permettant la détection de cibles pour la mise en oeuvre d'une fonctionnalité de détection et évitement. Le dispositif radar aéroporté peut également comprendre des moyens de traitement (52) permettant de réaliser un pistage des cibles détectées, et produire des informations adressées à un centre de contrôle du trafic aérien, et/ou à destination d'un dispositif embarqué de commande de l'aéronef. Le dispositif de traitement (52) peut également recevoir des données (54) relatives à l'aéronef permettant un ajustement des faisceaux d'antennes et un affinement des calculs de pistage.
摘要:
Verfahren zum Erfassen von Parametern der Erdatmosphäre mit mindestens einer Messsensoren aufweisenden Sonde (1) in einem von einem Wetterradar (2) überwachten Atmosphärenvolumen, bei dem die von den Messsensoren gemessenen Daten per Funk an eine Station (3) gesendet werden und die Position der Sonde (1) bestimmt wird, wobei die Zeit und die Position der Sonde (1), zu bzw. bei der eine jede Messung der Daten durchgeführt wird, den gemessenen Daten zugeordnet werden, und die von dem Wetterradar (2) erfassten Daten des überwachten Atmosphärenvolumens mit den von den Messsensoren gemessenen Daten mit Vergleich der den gemessenen Daten zugeordneten Zeiten und den entsprechenden Daten des Wetterradars (2) zu diesen Zeiten sowohl zeitlich als auch mit Vergleich der den gemessenen Daten zugeordneten Positionen und den entsprechenden Daten des Wetterradars (2) der Positionen örtlich korreliert werden.
摘要:
An electromagnetic lens device includes an electromagnetic lens (2) for transmission, an electromagnetic lens (3) for reception, two primary radiators (4,5) each located at a focal point of one of the electromagnetic lenses (2,3), an arm (12) holding the primary radiators (4,5), and a table (8). The arm (12) is rotatable about a first axis (A) that extends through the centers of the electromagnetic lenses (2,3). The table (8) is rotatable about a second axis (B) that is perpendicular to the first axis (A). The primary radiators (4,5) rotate about the first axis (A) together with the arm (12), and rotate about the second axis (B) together with the table (8).
摘要:
According to one embodiment, a weather radar apparatus includes a transmitting/receiving unit (12, 13, 14, and 15) configured to simultaneously transmit radar waves of a horizontally polarized wave and a vertically polarized wave and receive reflected waves, a signal processing unit (17) configured to perform dual polarization observation based on a reception output from the transmitting/receiving unit and calculate a received power of each polarized wave, an observation parameter calculation unit (19) configured to calculate, based on the received powers, a first observation parameter having a first spatial resolution, and a second observation parameter having higher correlation with a rainfall rate than that of the first observation parameter and a second spatial resolution lower than the first spatial resolution, and a rainfall rate calculation unit (19) configured to synthetically determine the rainfall rate based on the first observation parameter and the second observation parameter.
摘要:
Procédé de détermination de la vitesse d'au moins une cible par un radar météorologique (1) comprenant les étapes suivantes : - réception d'un signal provenant de la réflexion sur au moins la cible d'impulsions émises par le radar (1) selon un mode d'émission du radar tel que l'intervalle de temps entre deux impulsions est modifié à chaque impulsion et prend successivement m valeurs distinctes T1, T2,..., Tm et avec m ≥ 2 ; - en fonction dudit signal reçu, détermination du spectre de la fonction d'autocorrelation du signal reçu en exploitant au moins les valeurs d'autocorrélation en des points du type a1.T1 + a2.T2+...+ am.Tm, ou des multiples desdits points, où a1, a2, ..., am sont des coefficients prenant des valeurs entières positives et au moins deux desdits m coefficients sont non nuls; - détermination de la vitesse de la cible en fonction du spectre déterminé.
摘要:
An antenna device (18) with a system for automatic stabilization and positioning control. The antenna device incorporates micro-electromechanical (MEMs)-based accelerometer and gyroscopic integrated circuit (IC) sensors (26) directly into the antenna base (20) in a vehicle-mounted antenna application. The sensors enable the antenna device to automatically stabilize the antenna (22) to achieve a desired beam sweep region, independent of vehicle movement, without requiring external sensor input. The invention eliminates the need for a communication interface to externally mounted orientation sensors, reduces cable I/O, and eases the installation procedure.
摘要:
A method of calibrating antenna-position detection associated with a radar system (300), the radar system including a first gimbal (30) and a first angle sensor (320, 330) configured to detect an angular position of the first gimbal, includes mounting a second angle sensor (60, 70) to the first gimbal configured to detect an angular position of the first gimbal. The first gimbal is rotated through each angular position of a set of the angular positions. A first set of data is generated with the first angle sensor that characterizes a detected angular position of the first gimbal. A second set of data is generated with the second angle sensor that characterizes a detected angular position of the first gimbal. A third data set is determined comprising differences, between the first and second data sets, in detected angular position at each first-gimbal angular position. The third data set is stored in a memory device (340).
摘要:
Weather radar detecting systems and methods are operable to display a vertical view (602) of intensities of turbulence regions (112, 114, 116). An exemplary embodiment has a radar (210) operable to detect turbulence, a processing system (212) operable to determine location and intensity of the detected turbulence, a three-dimensional (3-D) weather information database (236) comprising of a plurality of voxels that is associated with a unique geographic location with respect to the aircraft (104) wherein the information corresponding to the turbulence intensity is stored, and a display (222) operable to display a vertical view of a selected vertical slice (306), wherein the displayed vertical view (602) displays the determined turbulence intensity and the determined location of the turbulence.
摘要:
Systems and methods differentiate weather, such as storm cells and/or turbulence regions, based on location relative to a planned flight path (102) of an aircraft (104). An exemplary embodiment compares a location of the weather with a location of a region of space corresponding to the planned flight path (102) of the aircraft (104). In response to the location of the weather region being outside of the region of space, an icon is presented on a display corresponding to the weather using a first icon format. In response to location of the weather being within the region of space, the icon corresponding to the weather is presented on the display using a second icon format, the second icon format different from the first icon format.