(19)
(11)EP 3 480 619 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
14.08.2019 Bulletin 2019/33

(43)Date of publication A2:
08.05.2019 Bulletin 2019/19

(21)Application number: 18196632.6

(22)Date of filing:  25.09.2018
(51)International Patent Classification (IPC): 
G01S 5/02(2010.01)
G01S 7/02(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 11.10.2017 US 201762571155 P
13.12.2017 US 201715840968

(71)Applicant: The Boeing Company
Chicago, IL 60606-1596 (US)

(72)Inventors:
  • PHEIFFER, Brian K.
    Chicago, IL 60606-1596 (US)
  • EDEWAARD, David O.
    Chicago, IL 60606-1596 (US)
  • SUMMERS, Daniel S.
    Chicago, IL 60606-1596 (US)
  • CARLSON, Neal
    Chicago, IL 60606-1596 (US)

(74)Representative: Bryn-Jacobsen, Caelia 
Kilburn & Strode LLP Lacon London 84 Theobalds Road
London WC1X 8NL
London WC1X 8NL (GB)

  


(54)LOCATION DETERMINATION OF AN EMITTER USING FREQUENCY-OF-ARRIVAL (FOA) MEASURED FROM A SINGLE MOVING PLATFORM


(57) Systems, methods, and apparatus for location determination of an emitter using frequency-of-arrival (FOA) measured from a single moving platform are disclosed. In one or more examples, a disclosed system allows for location determination of stationary, pulsed radio frequency (RF) emitters (120a, 120b, 120c, 120d) from a moving platform (110) by using coherent frequency of arrival (CFOA) Doppler history measurements. The term "coherent" is used to indicate that the process requires a RF-coherent pulse train, such as that generated by modern radar. In one or more examples, the disclosed system employs one of two disclosed CFOA measurement methods (Method 1: CFOA linear regression of phase (LRP), and Method 2: CFOA cross-correlated frequency spectra (CCFS)). The disclosed system also enables geo-discrimination (GeoD) of emitters at known locations, or alternatively geo-location of emitters at unknown locations.







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