USB278491I5 - - Google Patents

Info

Publication number
USB278491I5
USB278491I5 US27849172A USB278491I5 US B278491 I5 USB278491 I5 US B278491I5 US 27849172 A US27849172 A US 27849172A US B278491 I5 USB278491 I5 US B278491I5
Authority
US
United States
Prior art keywords
target
altitude
time
over
aircraft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US278491A priority Critical patent/US3921170A/en
Publication of USB278491I5 publication Critical patent/USB278491I5/en
Application granted granted Critical
Publication of US3921170A publication Critical patent/US3921170A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/22—Aiming or laying means for vehicle-borne armament, e.g. on aircraft
    • F41G3/24—Bombsights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G9/00—Systems for controlling missiles or projectiles, not provided for elsewhere
    • F41G9/02—Systems for controlling missiles or projectiles, not provided for elsewhere for bombing control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/882—Radar or analogous systems specially adapted for specific applications for altimeters

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Horizontal range X and altitude over a target h during bomb delivery from an aircraft at a present time t is computed by first determining horizontal range over the target Xo at time of acquisition to from the relationship IN WHICH THE AZIMUTH ANGLE A of the target relative to the aircraft heading and the aircraft heading at a present time t is supplied by a mapping radar and a heading reference source respectively. VN and VE represent respectively the north and east components of the aircraft's velocity supplied by a ground velocity data source. An updated estimate of the altitude, ho', over the target at the time of target acquisition, to, is computed according to the relationship ho' = 2ROOT Ro2 - Xo2 WHERE Ro, the slant range of the target at to, is derived from a mapping radar through a holding device, and the initial value of the altitude over the target ho' at the time of target acquisition, to prior to updating, is taken from an altimeter. A logic circuit selects the proper altitude ho from the two alternatives and then h, the altitude at time t, is computed according to the
US278491A 1972-07-31 1972-07-31 Method and system for computing altitude over a target and the horizontal range thereof Expired - Lifetime US3921170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US278491A US3921170A (en) 1972-07-31 1972-07-31 Method and system for computing altitude over a target and the horizontal range thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US278491A US3921170A (en) 1972-07-31 1972-07-31 Method and system for computing altitude over a target and the horizontal range thereof

Publications (2)

Publication Number Publication Date
USB278491I5 true USB278491I5 (en) 1975-01-28
US3921170A US3921170A (en) 1975-11-18

Family

ID=23065173

Family Applications (1)

Application Number Title Priority Date Filing Date
US278491A Expired - Lifetime US3921170A (en) 1972-07-31 1972-07-31 Method and system for computing altitude over a target and the horizontal range thereof

Country Status (1)

Country Link
US (1) US3921170A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3786803D1 (en) * 1987-11-17 1993-09-02 Litef Gmbh METHOD FOR INCREASING ERROR DETECTION IN THE SPEED MEASUREMENT OF AIRCRAFT DEVICES USING DOPPLER RADAR.
US5233524A (en) * 1991-02-12 1993-08-03 Honeywell Inc. Distance to a stationary location estimator for a moving vehicle
DE4123298C1 (en) * 1991-07-13 1992-12-03 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Direction finder with installation factors computer for locality compensation - has interface with associated DA converter for test program giving range to aircraft or missile
US7095364B1 (en) * 2005-08-04 2006-08-22 The Boeing Company Altitude measurement system and associated methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454673A (en) * 1944-03-02 1948-11-23 Rca Corp Radio bomb release system
US2988960A (en) * 1956-07-16 1961-06-20 Gen Motors Corp Bombing navigational computer
US2995984A (en) * 1956-07-16 1961-08-15 Gen Motors Corp Multiple solution bombing computer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454673A (en) * 1944-03-02 1948-11-23 Rca Corp Radio bomb release system
US2988960A (en) * 1956-07-16 1961-06-20 Gen Motors Corp Bombing navigational computer
US2995984A (en) * 1956-07-16 1961-08-15 Gen Motors Corp Multiple solution bombing computer

Also Published As

Publication number Publication date
US3921170A (en) 1975-11-18

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