Abstract: A system is for recognizing obstructions and monitoring movements on or above an airport area (1) with sensors (2, 3, 4). A sensor (2) is a radar device having a plurality of antenna elements (12, 14), which are affixed to a curved surface (15) of an antenna carrier (2a) and are turned on, one after the other, in terms of time. Thus a first part of the antenna elements (14) is disposed on a first circular line (13) on the surface of the antenna carrier (2a), and a second part of the antenna elements (12) is disposed on a circular line (15) perpendicular to the first circular line (13). Therefore the data of the radar device (2) are evaluated in a first ROSAR process, to image the situation on the ground, and in a second ROSAR process, to image the heights of the flying objects to be observed.

Abstract: The invention relates to a system for recognizing obstructions and monitoring movements on or above an airport area (1) with sensors (2, 3, 4). According to the invention, a sensor (2) is a radar device having a plurality of antenna elements (12, 14), which are affixed to a curved surface (15) of an antenna carrier (2a) and are turned on, one after the other, in terms of time, whereby a first part of the antenna elements (14) is disposed on a first circular line (13) on the surface of the antenna carrier (2a), and a second part of the antenna elements (12) is disposed on a circular line (15) perpendicular to the first circular line (13), and whereby the data of the radar device (2) are evaluated in a first ROSAR process, to image the situation on the ground, and in a second ROSAR process, to image the heights of the flying objects to be observed.

Abstract: A radar system for active obstacle warning and imaging of the surface of the earth, working in the pulse frequency or FH-CW range, which can be used in on-line operation in real time, includes a plurality of antenna elements for sending and receiving radar signals, which are arranged on the fuselage of an aircraft, and which may be turned on and scanned sequentially, whereby a synthetic aperture can be generated by means of periodic sending and receiving of the antenna elements. Antenna elements are arranged along the curved surface of the aircraft contour, whereby a SAR processor is present, which analyzes the data obtained from the antenna elements and displays them as processed radar images on board the aircraft, in a virtual cockpit.

Abstract: It is proposed in connection with a method for the interferometric radar measurement in conjunction with a helicopter operating in accordance with the ROSAR principle (Heli-Radar) that two coherent receiving antennas with receiving channels are associated with a transmitter of the ROSAR-system mounted on the revolving rotary cross; and that the difference (?R) between the two distances (R+?R, R) from the measured impact point P are calculated, in the manner known per se, based on the wavelength ? of the emitted radar signal and the measured phase difference of the receiving echo of the two coherent receive channels.

Abstract: The invention relates to an obstacle warning system for railborne vehicles, particularly for high-speed trains, comprising of at least one sensor (S1, S2) that is mounted on the railborne vehicle. According to the invention, the sensor (S1, S2) is aligned transverse to the direction of travel of the railborne vehicle (Fz) whereby enabling the detection of potential obstacles located within the structure clearance of a vehicle that is adjacent to the travel way of the vehicle (Fz).

Abstract: A method for recognizing and identifying objects by means of several sensors, particularly using imaging sensors (L, W, V) in the infrared and/or visible wavelength range and radar devices (R) which are based on the generation of a synthetic aperture. According to the invention, generation of the synthetic aperture occurs in accordance with the ROSAR principle, wherein a plurality of antenna elements (A), which the radar device (R) comprises, is placed on the aircraft (F) along its arched contour (K), controlled sequentially and scanned, and wherein the information acquired by the radar devices (R) and the imaging sensors (L, W, V) is subsequently processed, in such a way that optimal imaging of the surroundings of the aircraft (F) is made possible in every viewing direction.

Abstract: It is proposed in connection with a method for the interferometric radar measurement in conjunction with a helicopter operating in accordance with the ROSAR principle (Heli-Radar) that two coherent receiving antennas with receiving channels are associated with a transmitter of the ROSAR-system mounted on the revolving rotary cross; and that the difference (?R) between the two distances (R+?R, R) from the measured impact point P are calculated, in the manner known per se, based on the wavelength ? of the emitted radar signal and the measured phase difference of the receiving echo of the two coherent receive channels.

Abstract: The invention relates to a telematics method for helicopters. According to the inventive method, the use spectrum of helicopters which are provided with all-weather flight guidance and obstacle warning systems is enlarged and flight security is further improved by transmitting data and/or speech by means of terrestrial and/or satellite-supported mobile radio telecommunications networks and by connecting to a locating system. Logistics processes of the helicopter operation and of the institutions benefiting from a helicopter use are optimized.

Abstract: The invention relates to a radar system for active obstacle warning and imaging of the surface of the earth, working in the pulse frequency or FM-CW range, which can be used in on-line operation in real time, comprising a plurality of antenna elements for sending and receiving radar signals, which are arranged on the fuselage of an aircraft, and which may be turned on and scanned sequentially, whereby a synthetic aperture can be generated by means of periodic sending and receiving of the antenna elements. According to the invention, the antenna elements are arranged along the curved surface of the aircraft contour, whereby a SAR processor is present, which analyzes the data obtained from the antenna elements and displays them as processed radar images on board the aircraft, in a virtual cockpit.

Abstract: The invention relates to a method for recognizing and identifying objects by means of several sensors, particularly using imaging sensors (L, W, V) in the infrared and/or visible wavelength range and radar devices (R) which are based on the generation of a synthetic aperture. According to the invention, generation of the synthetic aperture occurs in accordance with the ROSAR principle, wherein a plurality of antenna elements (A), which the radar device (R) comprises, is placed on the aircraft (F) along its arched contour (K), controlled sequentially and scanned, and wherein the information acquired by the radar devices (R) and the imaging sensors (L, W, V) is subsequently processed, in such a way that optimal imaging of the surroundings of the aircraft (F) is made possible in every viewing direction.

Abstract: In a system for supplying power to ROSAR transmitting and receiving antennas that are integrated into the tip of a helicopter rotor blade, wind energy is converted directly into electrical energy locally at the rotor blade tip.

Abstract: A ROSAR wire detection method is based upon ROSAR focusing of entire segments of wire. By generating a wire reference signal comprised of a sum of coherent reference signals, the basis for reliable wire detectability is provided.

Abstract: The invention relates to a telematics method for helicopters. According to the inventive method, the use spectrum of helicopters which are provided with all-weather flight guidance and obstacle warning systems is enlarged and flight security is further improved by transmitting data and/or speech by means of terrestrial and/or satellite-supported mobile radio telecommunications networks and by connecting to a locating system. Logistics processes of the helicopter operation and of the institutions benefiting from a helicopter use are optimised.

Abstract: In conjunction with an arrangement for the interferometric radar measurement in connection with a radar system operating according to the ROSAR principle, comprising one coherent transmitting antenna and two coherent receiving antennas and their receiving channels, in connection with which the difference in the path between the two distances of the antennas and the measured points of impact is calculated by the wavelength &lgr; of the emitted radar signal and the measured phase difference of the receiving echo of the two coherent receiving channels, it is proposed that the interferometric ROSAR system is integrated in or on a rotating device and positioned in such a way that each relevant area of the field to be measured can be detected.

Abstract: In a method for operating a rotating synthetic aperture radar system that works with pulse frequency or in FM-CW operation in order to detect, penetrate and evaluate objects that are located vertically below the helicopter carrying the ROSAR device, pixels are determined using their own specific doppler histories.

Abstract: A method of signal conditioning and processing uses a ROSAR system for obtaining high-resolution elevation data using a fixed transmitting antenna, without requiring a turnstile. A telescope-like extensible transmitting antenna having large vertical dimensions illuminates an area to be imaged in a fanned pattern, creating overlapping elevation sectors. Reflected signals are relayed to a fixed receiving antenna via rotating transponders.

Abstract: In a method for operating a rotating synthetic aperture radar system that works with pulse frequency or in FM-CW operation in order to detect, penetrate and evaluate objects that are located vertically below the helicopter carrying the ROSAR device, pixels are determined using their own specific doppler histories.

Abstract: A method of signal conditioning and processing uses a ROSAR system for obtaining high-resolution elevation data using a fixed transmitting antenna, without requiring a turnstile. A telescope-like extensible transmitting antenna having large vertical dimensions illuminates an area to be imaged in a fanned pattern, creating overlapping elevation sectors. Reflected signals are relayed to a fixed receiving antenna via rotating transponders.

Abstract: A ROSAR wire detection method is based upon ROSAR focusing of entire segments of wire. By generating a wire reference signal comprised of a sum of coherent reference signals, the basis for reliable wire detectability is provided.

Abstract: In a system for supplying power to ROSAR transmitting and receiving antennas that are integrated into the tip of a helicopter rotor blade, wind energy is converted directly into electrical energy locally at the rotor blade tip.