← Back to Patent Explorer
US5855339A Expired / Lapsed US ⏱️ 0.0 years remaining

System and method for simultaneously guiding multiple missiles

Assignee: Raytheon Co
•
Filing: 1997-07-07
•
Granted: 1999-01-05
•
Expires: 2017-07-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A system and method that covertly provides in-flight target update data to a large number of missiles. The system and method covertly guides the missiles using a transponder located on a satellite that relays encoded target update data to receivers located on each of the missiles. The target update data is derived from intelligence data acquired by a remote sensing device. The target update data is typically transmitted to the missile launch site where it is encoded and transmitted to the transponder on the satellite. The encoding is preferably accomplished using direct sequence spread spectrum/code division multiple access (CDMA) encoding produced using unique seeds that are supplied to pseudo random code generators that uniquely encode the data to be transmitted to each missile. The receivers on each of the missiles have pseudo random code generators that are loaded with the unique seeds. The present system and method enable rapid response to fast-changing battlefield environments, particularly where mobile or relocatable targets are involved.

Inventors

  • 👤 Donald C. Mead
  • 👤 Carl G. Foster

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 17:04
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301; F41G7/308

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 214 words
A system for covertly providing a large number of missiles with in-flight updated guidance data improve the ability of the missiles to attack multiple mobile targets, said system comprising: a plurality of missiles that each comprise a receiver having a pseudo random code generator that contains a unique seed; a monitoring device having a sensor for generating current target location data indicative of current locations of the multiple mobile targets, and having a transmitter for transmitting the current target location data; a receiver located at a missile control location for receiving the current target location data; transmitter means having a pseudo random code generator that contains a plurality of unique seeds that correspond to each of the plurality of missiles, for processing the current target location data to generate uniquely encoded in-flight target updates, and for transmitting the encoded in-flight target updates; and a satellite comprising a transponder for receiving the transmitted encoded in-flight target updates and for relaying the target updates to the plurality of missiles; and wherein the respective receivers in the plurality of missiles each process the relayed encoded in-flight target updates and decode those target updates that were encoded using the corresponding unique seed, and wherein the decoded target updates more accurately guide the missiles to their respective target locations.
Claim 2
Independent Claim 214 words
A system for covertly providing a large number of missiles with in-flight updated guidance data improve the ability of the missiles to attack multiple mobile targets, said system comprising: a plurality of missiles that each comprise a receiver having a pseudo random code generator that contains a unique seed; a monitoring device having a sensor for generating current target location data indicative of current locations of the multiple mobile targets, and having a transmitter for transmitting the current target location data; a receiver located at a missile control location for receiving the current target location data; transmitter means having a pseudo random code generator that contains a plurality of unique seeds that correspond to each of the plurality of missiles, for processing the current target location data to generate uniquely encoded in-flight target updates, and for transmitting the encoded in-flight target updates; and a satellite comprising a transponder for receiving the transmitted encoded in-flight target updates and for relaying the target updates to the plurality of missiles; and wherein the respective receivers in the plurality of missiles each process the relayed encoded in-flight target updates and decode those target updates that were encoded using the corresponding unique seed, and wherein the decoded target updates more accurately guide the missiles to their respective target locations.
Claim 3
Dependent Claim 14 words
The system of claim 1 wherein the monitoring device comprises an unmanned aerial vehicle.
Claim 4
Dependent Claim 14 words
The system of claim 1 wherein the monitoring device comprises a manned aerial vehicle.
Claim 5
Dependent Claim 15 words
The system of claim 1 wherein the monitoring device comprises a satellite-based remote sensing device.
Claim 6
Dependent Claim 12 words
The system of claim 1 wherein the monitoring device comprises the missile.
Claim 7
Dependent Claim 14 words
The system of claim 1 wherein the satellite comprises a Global Broadcast System satellite.
Claim 8
Dependent Claim 12 words
The system of claim 1 wherein the sensor comprises a video camera.
Claim 9
Dependent Claim 52 words
The system of claim 1 wherein the encoded in-flight target updates that are transmitted to each missile are modulated using direct sequence spread spectrum CDMA modulation generated by an exclusive-OR of the target update data and the output of the pseudo random code generator derived from the unique seed for each missile.
Claim 10
Independent Claim 222 words
A method for covertly providing a plurality of missiles with updated guidance data during their respective flights to improve the ability of the missiles to attack multiple targets, said method comprising the steps of: providing a plurality of missiles that each has a receiver embodying a pseudo random code generator having a unique seed; launching a salvo of missiles toward the multiple mobile targets; monitoring the mobile targets using sensors onboard a monitoring device; transmitting current target location data from the monitoring device to a receiver; processing received current target location data to produce target update data for each missile; encoding the target update data for each missile using a spread spectrum CDMA coding technique and the unique seed for the missile which produces an encoded in-flight target update for each missile; transmitting the encoded in-flight target update to a transponder on a satellite; retransmitting the encoded in-flight target update from the transponder to the plurality of missiles; decoding the encoded in-flight target update data at each missile for which the data is intended in the receiver by demodulating the encoded data encoded using the unique seed associated with the missile by using the unique seed in its pseudo random code generator; and retargeting the particular missile in accordance with the in-flight target update data to the vicinity of the mobile targets.
Claim 11
Independent Claim 222 words
A method for covertly providing a plurality of missiles with updated guidance data during their respective flights to improve the ability of the missiles to attack multiple targets, said method comprising the steps of: providing a plurality of missiles that each has a receiver embodying a pseudo random code generator having a unique seed; launching a salvo of missiles toward the multiple mobile targets; monitoring the mobile targets using sensors onboard a monitoring device; transmitting current target location data from the monitoring device to a receiver; processing received current target location data to produce target update data for each missile; encoding the target update data for each missile using a spread spectrum CDMA coding technique and the unique seed for the missile which produces an encoded in-flight target update for each missile; transmitting the encoded in-flight target update to a transponder on a satellite; retransmitting the encoded in-flight target update from the transponder to the plurality of missiles; decoding the encoded in-flight target update data at each missile for which the data is intended in the receiver by demodulating the encoded data encoded using the unique seed associated with the missile by using the unique seed in its pseudo random code generator; and retargeting the particular missile in accordance with the in-flight target update data to the vicinity of the mobile targets.
Claim 12
Dependent Claim 26 words
The method of claim 9 wherein the step of monitoring the mobile targets comprises the step of monitoring the mobile targets using an unmanned aerial vehicle.
Claim 13
Dependent Claim 26 words
The method of claim 9 wherein the step of monitoring the mobile targets comprises the step of monitoring the mobile targets using a manned aerial vehicle.
Claim 14
Dependent Claim 27 words
The method of claim 9 wherein the step of monitoring the mobile targets comprises the step of monitoring the mobile targets using a satellite-based remote sensing device.
Claim 15
Dependent Claim 28 words
The method of claim 9 wherein the step of monitoring the mobile targets comprises the step of monitoring the mobile targets using a sensor disposed on the missile.
Claim 16
Dependent Claim 53 words
The method of claim 9 wherein the step of encoding the target update data comprises modulating the target update data using direct sequence spread spectrum CDMA modulation generated by an exclusive-OR of the target update data and the output of the pseudo random code generator derived from the unique seed for each missile.

References Cited (Backward Citations)

US3856237A Cited
US3818453A Cited
US4100545A Cited
US4738411A Cited
US5379966A Cited
US4997144A Cited
US5042743A Cited
US5101417A Cited
US5458041A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-01-04 2002-07-06 2003-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-01-04 2006-07-06 2007-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-01-04 2010-07-06 2011-01-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag