EP2372297A1 - Method of terrain reconnaissance by means of a mortar bomb - Google Patents
Method of terrain reconnaissance by means of a mortar bomb Download PDFInfo
- Publication number
- EP2372297A1 EP2372297A1 EP10185325A EP10185325A EP2372297A1 EP 2372297 A1 EP2372297 A1 EP 2372297A1 EP 10185325 A EP10185325 A EP 10185325A EP 10185325 A EP10185325 A EP 10185325A EP 2372297 A1 EP2372297 A1 EP 2372297A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camera
- terrain
- deviation
- observation unit
- signal
- 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.)
- Granted
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/365—Projectiles transmitting information to a remote location using optical or electronic means
Definitions
- the object of the invention is a method of terrain reconnaissance by means of a mortar bomb.
- Methods of terrain reconnaissance are known for example from patent specification US 3,962,537 . These methods consist in that a mortar bomb, equipped with an observation unit with a camera, a parachute, and a transmitter, is fired toward a terrain subject to a reconnaissance.
- the observation unit is disconnected from the shell of the missile in order to monitor the terrain by means of the camera falling down slowly with the parachute, simultaneously transmitting images of the terrain by means of radio, infrared or other radiation, to a receiver installed at a command post, where the received signals are suitably processed, registered or displayed directly on a display unit of a computer.
- the observation unit does not fall down steadily.
- the vertical fall trajectory is deviated by the wind, which creates crosswise image oscillations.
- the object of the invention is to create a method eliminating the rotation of the image displayed on the display unit.
- the essence of the method consisting in firing a mortar bomb, equipped with an observation unit comprised of a camera, a parachute, and a transmitter, toward a terrain subject to a reconnaissance, where after a specified time the observation unit is separated from the shell of the missile and monitors the terrain, simultaneously sending a signal from the camera by means of radio, infrared or other radiation to a receiver situated at a command post where signals received from the camera are displayed on a computer display unit after being converted into the digital format, lies in that a deviation value of a determined axis of the observation unit from the north-south direction N-S is detected in the observation unit for a single image by means of a magnetometer or a satellite navigation system GPS, said consecutive deviation values being converted into a N-S deviation signal sent synchronically with a signal from the camera to the receiver, in which a position of each consecutive image on the display unit is corrected by its corresponding value of the deviation from the N-S direction by means of a known image rotation algorithm.
- a shell of a mortar bomb comprises an observation unit provided with a TV camera K, a parachute, a radio transmitter N, a magnetometer M, a disrupting charge together with its fuse, a supply unit Zn for an observing unit with an inertial power-on switch Wb, with a time-lag cut-out switch W C for switching off the supply unit Zn, as well as with a controller Sn.
- the missile is fired by means of a mortar. Before dropping the missile into the tube, a delay time is set for the disrupting charge in the observation unit.
- the observation unit in the fired missile is fed with a supply voltage by means of the inertial power-on switch Wb, and after the determined delay time the disrupting charge is initiated, the parachute is opened, and the observation unit slowly falls down.
- the camera K During the falling stage, the camera K generates a video signal corresponding to the observed terrain being in its view.
- the values of a momentary deviation of the observation unit from the north direction are detected, and information concerning these deviation values is encoded in a sound channel of a TV signal, said signal being transmitted by the radio transmitter N to a command post.
- single images are separated from film frames, and a position of each of the consecutive images on the screen is corrected, by means of a known picture rotation algorithm, by its value of the deviation from the N-S direction.
- Separate frames are converted in the functor F2 of the algorithm into separate appropriately positioned images.
- the functor F1 When watching an image on the screen E, one may also use the functor F1 in order to magnify the image and to change its central point's position in relation to the centre of the screen of the display unit E.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
- The object of the invention is a method of terrain reconnaissance by means of a mortar bomb.
- Methods of terrain reconnaissance are known for example from patent specification
US 3,962,537 . These methods consist in that a mortar bomb, equipped with an observation unit with a camera, a parachute, and a transmitter, is fired toward a terrain subject to a reconnaissance. When the missile is positioned above such terrain, the observation unit is disconnected from the shell of the missile in order to monitor the terrain by means of the camera falling down slowly with the parachute, simultaneously transmitting images of the terrain by means of radio, infrared or other radiation, to a receiver installed at a command post, where the received signals are suitably processed, registered or displayed directly on a display unit of a computer. However, the observation unit does not fall down steadily. The vertical fall trajectory is deviated by the wind, which creates crosswise image oscillations. However, the fact that the falling unit rotates is very disadvantageous as the picture seen on the display unit rotates as well. Any attempts to eliminate the rotation of the observation unit would result in an excessive enlargement of the observation unit and the missile itself. According to patent specificationW02004 057263 , the observation unit is not separated from the missile, but the missile trajectory is mechanically stabilized in such a way that the photographed terrain is always in view of the camera. - The object of the invention is to create a method eliminating the rotation of the image displayed on the display unit.
- The essence of the method consisting in firing a mortar bomb, equipped with an observation unit comprised of a camera, a parachute, and a transmitter, toward a terrain subject to a reconnaissance, where after a specified time the observation unit is separated from the shell of the missile and monitors the terrain, simultaneously sending a signal from the camera by means of radio, infrared or other radiation to a receiver situated at a command post where signals received from the camera are displayed on a computer display unit after being converted into the digital format, lies in that a deviation value of a determined axis of the observation unit from the north-south direction N-S is detected in the observation unit for a single image by means of a magnetometer or a satellite navigation system GPS, said consecutive deviation values being converted into a N-S deviation signal sent synchronically with a signal from the camera to the receiver, in which a position of each consecutive image on the display unit is corrected by its corresponding value of the deviation from the N-S direction by means of a known image rotation algorithm.
- As a result, an image on the display unit of a computer does not rotate in spite of the rotation of the observatory unit.
- An embodiment of this invention is shown in the drawing which depicts a block diagram of an electronic circuit by means of which the method according to the invention is realized.
- A shell of a mortar bomb comprises an observation unit provided with a TV camera K, a parachute, a radio transmitter N, a magnetometer M, a disrupting charge together with its fuse, a supply unit Zn for an observing unit with an inertial power-on switch Wb, with a time-lag cut-out switch WC for switching off the supply unit Zn, as well as with a controller Sn. The missile is fired by means of a mortar. Before dropping the missile into the tube, a delay time is set for the disrupting charge in the observation unit. The observation unit in the fired missile is fed with a supply voltage by means of the inertial power-on switch Wb, and after the determined delay time the disrupting charge is initiated, the parachute is opened, and the observation unit slowly falls down. During the falling stage, the camera K generates a video signal corresponding to the observed terrain being in its view. At the same time, the values of a momentary deviation of the observation unit from the north direction are detected, and information concerning these deviation values is encoded in a sound channel of a TV signal, said signal being transmitted by the radio transmitter N to a command post. After receiving this signal by means of the receiver 0 at the command post, single images are separated from film frames, and a position of each of the consecutive images on the screen is corrected, by means of a known picture rotation algorithm, by its value of the deviation from the N-S direction. Thus obtained images are simultaneously registered in memory P for future analysis, if required. Separate frames are converted in the functor F2 of the algorithm into separate appropriately positioned images. When watching an image on the screen E, one may also use the functor F1 in order to magnify the image and to change its central point's position in relation to the centre of the screen of the display unit E.
-
- K
- - camera
- E
- - display unit
- F1
- - functor in the algorithm enlarging an image and moving its central point
- F2
- - functor in the algorithm converting frames into images
- L
- - disrupting charge with its fuse
- M
- - magnetometer
- N
- - transmitter
- O
- - receiver
- P
- - memory
- Sn
- - controller of a receiver
- So
- - controller of a transmitter
- Wb
- - inertial power-on switch
- Wc
- - time-lag cut-out switch
- Zn
- - transmitter supply unit
- Zo
- - receiver supply unit
Claims (1)
- A method for terrain reconnaissance by means of a mortar bomb, consisting in that a mortar bomb is fired toward a terrain subject to a reconnaissance, said missile being comprised of a camera, a parachute and a transmitter, where an observation unit, after a specified time, is separated from the shell of the missile and monitors the terrain simultaneously sending a signal from the camera by radio, infrared or other radiation to a receiver situated at a command post, where signals received from the camera are displayed on a computer display unit after being converted into the digital format, characterized in that a deviation value of a specified axis of the observation unit from the north-south direction N-S is detected in the observation unit for a single image by means of a magnetometer M or a satellite navigation system GPS, said consecutive deviation values being converted into a N-S deviation signal, sent synchronically with a signal from the camera K to the receiver Q, in which a position of each consecutive image on the display unit E is corrected by its corresponding value of the deviation from the N-S direction by means of a known image rotation algorithm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL36136510 | 2010-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2372297A1 true EP2372297A1 (en) | 2011-10-05 |
| EP2372297B1 EP2372297B1 (en) | 2013-11-06 |
Family
ID=43127636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20100185325 Not-in-force EP2372297B1 (en) | 2010-03-31 | 2010-10-01 | Method of terrain reconnaissance by means of a mortar bomb |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP2372297B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2789741C1 (en) * | 2022-08-16 | 2023-02-07 | Федеральное Государственное Казенное Военное Образовательное Учреждение Высшего Образования "Военный Учебно-Научный Центр Сухопутных Войск "Общевойсковая Ордена Жукова Академия Вооруженных Сил Российской Федерации" | Target designation method using a personal universal flying platform based on the coanda effect with an onboard controlled video/photo camera |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3962537A (en) | 1975-02-27 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Navy | Gun launched reconnaissance system |
| WO2004057263A1 (en) | 2002-12-19 | 2004-07-08 | Rafael-Armament Development Authority Ltd. | A personal rifle-launched reconnaissance system |
| US7283156B1 (en) * | 2002-09-12 | 2007-10-16 | Lockheed Martin Corporation | Airborne imaging system and method |
-
2010
- 2010-10-01 EP EP20100185325 patent/EP2372297B1/en not_active Not-in-force
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3962537A (en) | 1975-02-27 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Navy | Gun launched reconnaissance system |
| US7283156B1 (en) * | 2002-09-12 | 2007-10-16 | Lockheed Martin Corporation | Airborne imaging system and method |
| WO2004057263A1 (en) | 2002-12-19 | 2004-07-08 | Rafael-Armament Development Authority Ltd. | A personal rifle-launched reconnaissance system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2789741C1 (en) * | 2022-08-16 | 2023-02-07 | Федеральное Государственное Казенное Военное Образовательное Учреждение Высшего Образования "Военный Учебно-Научный Центр Сухопутных Войск "Общевойсковая Ордена Жукова Академия Вооруженных Сил Российской Федерации" | Target designation method using a personal universal flying platform based on the coanda effect with an onboard controlled video/photo camera |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2372297B1 (en) | 2013-11-06 |
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