Rafael-armament Development Authority Ltd.

Alon Deutsch

Avner Rosenberg

Itzhak Schnitzer

The invention relates to a radar system which comprises: (a) at least two transmitting units for simultaneously, and in synchronization transmitting electromagnetic radiation in distinct frequencies f, f, f. . . towards a space of interest; and (b) at least one receiving unit tuned to a frequency of nf+mf+qf. . . , wherein n, m, q . . . being integers not equal to zero, for receiving a non-linear response of said radiation from objects located within the said space of interest.

Radar system and method

The invention relates to a radar system which comprises: (a) at least two transmitting units for simultaneously, and in synchronization transmitting electromagnetic radiation in distinct frequencies f, f, f. . . towards a space of interest; and (b) at least one receiving unit tuned to a frequency of nf+mf+qf. . . , wherein n, m, q . . . being integers not equal to zero, for receiving a non-linear response of said radiation from objects located within the said space of interest, and wherein the system is characterized in that said transmitted pulses are narrow pulses having duration in the range of between about 1 nanoseconds and about 100 nanoseconds.

The invention relates to an IFF apparatus for ground applications, which comprises: (a) an encoder for forming an interrogating or response sequence of pulses, and conveying the same to a UWB transmitter; (b) an UWB transmitter for getting said interrogating or response sequence of pulses, forming a corresponding interrogating or response signal of a sequence of UWB pulses, and transmitting the same via a UWB transmitting antenna; (c) a plurality of UWB receiving antennas, disposed away one from the other, for receiving either an interrogating signal or a response signal sent by another IFF apparatus; (d) a decoder for getting from at least one of said UWB receiving antennas received signals, decoding the same, comparing the decoded signal with a bank of pre-stored signals, and determining whether a received signal is an interrogating or response signal; and (e) a processing unit for, upon receipt of a signal of response to an interrogation signal sent by the present IFF apparatus, calculating the location of the responding IFF apparatus by: (I) determining the range R by the time delays between the interrogating and response signals; (II) determining the direction vector to the responding IFF apparatus by evaluating the time differences between arrival of each response pulse to a plurality of receiving antennas; and (III) determining the identity of the responding IFF apparatus by checking the received sequence of UWB pulses, assuming that the sequence of each IFF apparatus is unique.

Friend/foe identification system for a battlefield

A spark gap switch, including a first planar electrode including a discharge portion and a support portion. The spark gap also includes a second planar electrode parallel to and spaced apart from the first electrode and includes a discharge portion and a support portion. The discharge portions are mutually opposite, and the support portions are mutually staggered.

Growing community of inventors

Kiryat Motzkin, Israel

Alon Deutsch