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公开(公告)号：US11435430B2
公开(公告)日：2022-09-06
申请号：US17112118
申请日：2020-12-04
Inventor： Peter Dusaitis , Matthew F. Chrobak , Brian J. Smith , Paul D. Zemany
Abstract: A method for launching a round from an airborne platform, receiving a plurality of RF signals at the round, determining an amount of time between a first and second received RF signal, where the second signal is a multi-path signal and the first signal is a direct path signal. An altitude of the round is determined based on the delay between the first and second received signal and aligning the round's flight path with an initial velocity vector of the aircraft platform to reduce dispersion. The round can include a plurality of sensors for detecting the RF signals. The second received RF signal may be a multi-path signal having been reflected off of the earth's surface or another object on the earth's surface. The altitude of the round can be determined using the known altitude of the airborne platform, the delay of time between the first and second received signals, and the speed of light.
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公开(公告)号：US10014884B1
公开(公告)日：2018-07-03
申请号：US15694228
申请日：2017-09-01
Inventor： Timothy M. Dresser , Michael D. Blazej , Gregory M. Flewelling , Brian J. Smith
CPC classification number: H04B1/0014 , H04B1/40 , H04B7/15 , H04B7/15528
Abstract: An analog transceiver having low latency for processing a received RF/MW signal and modifying the received RF/MW signal into a modified RF/MW signal prior to transmission of the modified RF/MW signal. The analog transceiver comprises a receiving antenna; a direct conversion receiver, coupled with the receiving antenna, for splitting the received RF/MW signal into an in-phase portion and a quadrature portion; an analog signal processing device, having a plurality of actuatable switches, for modifying the in-phase and quadrature portions and outputting modified signals while only introducing minimal latency during processing; a direct conversion transmitter, for receiving the suitably modified in-phase and quadrature portions and forming the modified RF/MW signal; and a transmitting antenna for receiving the modified RF/MW signal and transmitting the modified RF/MW signal.
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公开(公告)号：US11435165B2
公开(公告)日：2022-09-06
申请号：US17112012
申请日：2020-12-04
Inventor： Brian J. Smith , Matthew F. Chrobak , Peter Dusaitis , Paul D. Zemany
Abstract: A narrow band antenna is configured to guide a munition toward a target location during a flight of the munition from a launch location toward the target location. The antenna has a first mode of operation operable during a first portion of the flight at a first bandwidth, and a second mode of operation operable during a second portion of the flight at a second bandwidth, the second bandwidth being a harmonic of the first bandwidth, and may be a third harmonic of the first bandwidth. The method includes transmitting a target location information to the munition in the first bandwidth during the first portion of the flight and then transmitting the target location information to the munition in the second bandwidth during the second portion of the flight. The first band may be X-band and the second band may be Ka-band.
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公开(公告)号：US20220179034A1
公开(公告)日：2022-06-09
申请号：US17112118
申请日：2020-12-04
Inventor： Peter Dusaitis , Matthew F. Chrobak , Brian J. Smith , Paul D. Zemany
Abstract: A method for launching a round from an airborne platform, receiving a plurality of RF signals at the round, determining an amount of time between a first and second received RF signal, where the second signal is a multi-path signal and the first signal is a direct path signal. An altitude of the round is determined based on the delay between the first and second received signal and aligning the round's flight path with an initial velocity vector of the aircraft platform to reduce dispersion. The round can include a plurality of sensors for detecting the RF signals. The second received RF signal may be a multi-path signal having been reflected off of the earth's surface or another object on the earth's surface. The altitude of the round can be determined using the known altitude of the airborne platform, the delay of time between the first and second received signals, and the speed of light.
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