摘要:
An interception system for intercepting incoming missiles and/or rockets including a launch facility, a missile configured to be launched by the launch facility, the missile having a fragmentation warhead, a ground-based missile guidance system for guiding the missile during at least one early stage of missile flight and a missile-based guidance system for guiding the missile during at least one later stage of missile flight, the missile-based guidance system being operative to direct the missile in a last stage of missile flight in a head-on direction vis-a-vis an incoming missile or rocket.
摘要:
A ground station forming part of a system for controlling the flight of a missile comprises two cascaded computers, the first of these computers generating guidance instructions on the basis of initially available data while the second computer converts these instructions into control signals transmitted to the missile. A receiver aboard the missile translates these control signals into operating commands for missile-borne actuators affecting its course, e.g. motors controlling yaw and pitch through the positioning of aerodynamic surfaces; the responses of the actuators to the operating commands are monitored by negative-feedback loops including error-correcting networks.
摘要:
In a method of guiding a missile in flight to a target (FIG. 1), the location of the missile and the range to the target are measured at a plurality of moments during the flight of the missile (step 10). The location of the target is calculated from the measured ranges and the measured missile locations (step 20). A required velocity vector angle is calculated from the calculated location of the target and a guidance law (step 30). A lateral acceleration required to provide the missile with a velocity oriented to the target at the required velocity vector angle is calculated for the missile (step 40). The missile is caused to accelerate with the calculated lateral acceleration, so that the missile to follows a trajectory according to the guidance law (step 50).
摘要:
Virtual Aperture Radar (VAR) imaging provides terminal phase radar imaging for an airborne weapon that can resolve multiple closely-spaced or highly correlated scatterers on a given target with a single pulse to provide an aimpoint update at a useful range to target without training data and without requiring a large aperture antenna. VAR imaging exploits the sparse, dominant-scatterer nature of man-made targets. The array manifold is constructed with a large number of basis functions that are parameterized by range or angle (or both) to target. The number of basis functions extends the capability to resolve scatterers beyond the Rayleigh resolution. However, this also makes the manifold underdetermined. A sparse reconstruction technique that places a sparsity constraint on the number of scatterers is used to solve the manifold to uniquely identify the ranges or angles to the scatterers on the target. These updates are passed to the weapon's guidance system, which in turn generates command signals to actuate aerodynamic surfaces such as fins or canards to steer the weapon to the target.
摘要:
There is disclosed an apparatus and a method for guidance of a projectile. The method for guidance of a projectile, includes emission from the launching position of the projectile of beams pointing to the vertexes of a regular polygon, emission from the launching position of a beam encompassing the preceding beams, determination of position of the projectile relative to the beams, the determined position enabling to correct the projectile trajectory to maintain the projectile the closer to the center of the polygon formed by the beams.
摘要:
The present invention is directed to a fuze application capable of GPS (Global Positioning System) and proximity radar functionality by co-locating a proximity radar antenna with a GPS DRA (Dielectric Resonator Antenna) fuze. The GPS DRA fuze has a HE11δ mode structure resulting in an E-field null at the center. The monopole proximity radar antenna is mounted in the E-field null center and is thus electrically isolated from the GPS DRA fuze. The high dielectric constant permits the GPS DRA fuze to operate in the L1 frequency and the electrically shortened proximity radar antenna to resonate in the C-Band within a small form factor. The GPS DRA fuze maintains a forward-looking CP (circular polarization) pattern while proximity antenna maintains a desirable monopole pattern. Nesting allows mounting of both GPS and proximity radar antennas on the fuze nose while reducing the total space occupied.
摘要:
A method of initiating the detonation of a warhead of a friendly guided missile and an arrangement for implementing the method. If a friendly guided missile or flying body, during its target approach phase, approaches an enemy missile or flying body, the active radar target seeker of the friendly guided missile is switched to perform a fine range discrimination, and an additional modulated signal is transmitted by the transmit/receive antenna of the active radar target seeker of the friendly guided missile, with this additional signal being received again after reflection at the enemy missile. With the aid of the received signal, the evaluation and control unit of the active radar target seeker generates an image of the enemy missile and determines the position of the warhead within the enemy missile. The warhead of the friendly guided missile is then guided into the vicinity of the warhead of the enemy missile and caused to explode. The friendly guided missile includes an active radar target seeker provided with a transmit/receive antenna, a high frequency component, an oscillator, a range gate filter bank and an evaluation and control unit.
摘要:
This invention is a beam rider system and method that utilizes polarization-agile millimeter beams. Information is spatially encoded in the beams by varying the rate of rotation of the linearly polarized vector of the beams. In one embodiment, information is encoded on a beam that is nutated around a centerline flight path of a missile. In another embodiment, information is encoded on four parallel beams that form a centerline which is the intended flight path of the missile. Receiver means in the flying missile receive and decode information from the beams and use this decoded information to guide the missile to a target.
摘要:
A multimode seeker includes a radio-frequency antenna and a controller. The radio-frequency antenna comprises a substrate and an electrically conductive film deposited on the substrate. The substrate is transparent to short wavelength infrared radiation. The electrically conductive film is configured to transmit and receive radio-frequency radiation and is transparent to the short wavelength infrared radiation. The controller is configured to receive and interpret data from the radio-frequency antenna.
摘要:
In a method of guiding a missile in flight to a target (FIG. 1), the location of the missile and the range to the target are measured at a plurality of moments during the flight of the missile (step 10). The location of the target is calculated from the measured ranges and the measured missile locations (step 20). A required velocity vector angle is calculated from the calculated location of the target and a guidance law (step 30). A lateral acceleration required to provide the missile with a velocity oriented to the target at the required velocity vector angle is calculated for the missile (step 40). The missile is caused to accelerate with the calculated lateral acceleration, so that the missile to follows a trajectory according to the guidance law (step 50).