Augmented reality application for munitions reporting

Abstract

A system and method for locating a target and presenting its location via augmented reality. The subject matter of the present invention comprises a projectile that can transmit information, including location information, to other computing devices. These computing devices can then use the location information to determine the projectile's relative location to the computing devices and generate a visual representation of the projectile's location on an augmented reality display such that the target's location is overlaid on a view of the real world through the display.

Description

[Technical field]

[0001] The field of the invention is electronic munitions delivery and information systems. [Background technology]

[0002] The Background Description contains information that may be useful in understanding the present invention. No admission is made that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0003] In combat situations, the ability to track the location and movements of targets is critical. In these situations, information can be the difference between success and failure, or even the difference between life and death. Targets have historically been tracked visually, either by eye on the ground or via aircraft (such as drones). However, the effectiveness of visual tracking is limited. Targets can be lost in poor weather conditions, at night, due to target movement, or if the target enters a structure.

[0004] Different types of sensors (eg, thermal sensors, night vision sensors, etc.) can assist an operator in tracking a target under different environmental conditions, but these methods are still limited by line-of-sight operating requirements.

[0005] In a coordinated effort, the ability of a squad or other group of operators to track a target is further limited by the ability of each member to accurately communicate what they are seeing.

[0006] Therefore, a need remains for a reliable target tracking system that provides real-time information to an operator in a useful and actionable manner. Summary of the Invention [Problem to be solved by the invention]

[0007] The present subject matter provides apparatus, systems, and methods whereby a projectile embedded in a target can generate and transmit signals that enable a computing device to determine the location of the projectile and present a graphical representation of the projectile's location to a user via an augmented reality display. [Means for solving the problem]

[0008] In embodiments, the systems and methods of the present subject matter can present a graphical representation indicating whether the projectile is stationary or moving. In particular, by changing the color of the indicator, the system can inform the user whether the projectile (and thus the target carrying the projectile) is moving closer to the user or moving away from the user.

[0009] In an embodiment, the system can classify targets carrying projectiles and present the classification via an augmented reality display. Classification can be done by detecting a sensor signal within the target and comparing it to a reference sensor signature.

[0010] In an embodiment, information regarding the projectile's location and other information can be transmitted to a computing device at a command center, which can then display the device's location and other information on a map for a commander to review and manage his team in the field.

[0011] Various objects, features, aspects and advantages of the present subject matter will become more apparent from the following detailed description of preferred embodiments, taken in conjunction with the accompanying drawings in which like numerals represent like components.

[0012] All publications identified in this specification are incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. If the definition or use of a term in an incorporated document is inconsistent with or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the document does not apply.

[0013] The following description contains information that may be useful in understanding the present invention. No admission is made that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0014] In some embodiments, numbers expressing properties such as amounts of ingredients, concentrations, reaction conditions, and the like, used to describe and claim certain embodiments of the present invention are understood to be modified in some cases by the term "about". Thus, in some embodiments, the numerical parameters set forth in this specification and the appended claims are approximations that may vary depending on the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters are interpreted by taking into account the number of reported significant digits and applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the present invention are approximations, the numerical values ​​set forth in the specific examples are reported as precisely as practicable. The numerical values ​​presented in some embodiments of the present invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

[0015] Unless the context dictates to the contrary, all ranges set forth herein are to be construed as inclusive of their endpoints, and open-ended ranges are to be construed as including only those values ​​that are commercially practical. Similarly, all lists of values ​​are to be deemed to include intermediate values, unless the context dictates to the contrary.

[0016] As used throughout the description herein and the claims that follow, the meanings of "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on," unless the context clearly dictates otherwise.

[0017] The description of ranges of values ​​herein is merely intended to serve as a shorthand method of individually referring to each separate value falling within the range. Unless otherwise indicated herein, each separate value is incorporated into this specification as if it were individually described herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or clearly contradicted by context. Any and all examples provided with respect to specific embodiments herein, or the use of exemplary language (e.g., "etc.") are intended merely to better describe the invention and do not impose limitations on the scope of the invention as otherwise claimed. No language in this specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0018] Grouping of alternative elements or embodiments of the invention disclosed herein is not to be construed as limiting. Each group member can be referenced and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in or deleted from a group for reasons of convenience and / or patentability. When any such inclusion or deletion occurs, the specification is deemed herein to include the group as modified and thus to satisfy the written description of all Markush groups used in the appended claims. [Brief description of the drawings]

[0019] [Figure 1] 1 is a diagram illustrating an overview of an augmented reality tracking system in accordance with an embodiment of the present subject matter. [Diagram 2] 1 illustrates an example of a suitable munitions deployment system, in accordance with an embodiment of the present subject matter. [Diagram 3] 4 is a flowchart of processing performed by a system in accordance with an embodiment of the present subject matter. [Figure 4] 1A-1C provide an example of a graphical representation displayed by a computing device in accordance with an embodiment of the present subject matter. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] It should be noted that any language directed to computers should be read to include any suitable combination of computing devices, including servers, interfaces, systems, databases, agents, peers, engines, controllers, or other types of computing devices acting individually or collectively. It is understood that a computing device comprises a processor configured to execute software instructions stored in a tangible, non-transitory computer-readable storage medium (e.g., hard drive, solid state drive, RAM, flash, ROM, etc.). The software instructions preferably configure the computing device to provide roles, responsibilities, or other functions as described below with respect to the disclosed apparatus. In a particularly preferred embodiment, the various servers, systems, databases, or interfaces exchange data using standardized protocols or algorithms, possibly based on HTTP, HTTPS, AES, public-private key exchange, web services APIs, known financial transaction protocols, or other methods of electronic information exchange. The data exchange is preferably performed over a packet-switched network, the Internet, a LAN, a WAN, a VPN, or other types of packet-switched networks.

[0021] The following description provides a number of exemplary embodiments of the subject matter of the present invention. Although each embodiment represents a single combination of the elements of the present invention, the subject matter of the present invention is considered to include all possible combinations of the elements disclosed. Thus, if one embodiment includes elements A, B, and C, and a second embodiment includes elements B and D, the subject matter of the present invention is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.

[0022] The following description contains information that may be useful in understanding the present invention. No admission is made that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0023] FIG. 1 shows an overview of an augmented reality tracking system 100 in accordance with an embodiment of the present subject matter. 1, the system 100 includes a projectile 110 that is embedded in a target 120. The projectile 110 is fired by a rifle or other weapon at the target 120. The target 120 may be a vehicle, a person, an animal, or other moving target.

[0024] As described further below, projectile 110 includes electronic and transmitter components that generate a transmission signal 130 that is detected by a computing device 140 that is within range of the transmission signal 130. In an embodiment such as the one shown in FIG. 1, computing device 140 then communicates information about projectile 110 for presentation by devices 150a-150n. While only three devices are shown here, the illustration and labeling of device 150n is intended to illustrate that any number of devices 150 may be included within system 100.

[0025] 1, computing device 140 may be a relay device that can receive relatively short-range communication signal 130 and then transmit information to one or more of devices 150a-150n over a long-range communication network. In embodiments such as the one shown in FIG. 1, computing device 140 may be on a drone or other autonomous vehicle that is prowling or positioned within communication range of projectile 110.

[0026] In embodiments, the computing device 140 is integrated into or unitary with one of the devices 150 if no relay is needed or if the device 150 is close enough to the projectile 110 for direct transmission. In variations of these embodiments, the device 150 can act as a relay to the other device 150.

[0027] An example of a suitable munitions deployment system that may be used for the purposes of the present subject matter is shown in Figure 2. The system of Figure 2 is discussed in more detail in applicant's U.S. patent application Ser. No. 16 / 900,226, the entirety of which is incorporated herein by reference.

[0028] The projectile 110 comprises an electronic component 210 that is enclosed within the housing exoskeleton 220 when the projectile is assembled. In the embodiment shown in FIG. 2, the electronic component 210 includes a transmitter and is therefore coupled to the antenna 240 for signal transmission. When assembled, a core 260 is inserted into a first end of the deceleration sleeve 230. The core 260 is made of a material that deforms upon impact and upon entry into the target body. For example, the core 260 may be a lead core or may be made of another suitable material (e.g., a polymer, a composite, copper, steel, or other hard or soft metal).

[0029] The deceleration sleeve 230 houses the housing exoskeleton 220, including the electronic components 210, all of which are housed within the outer jacket 250. The outer jacket 250 is then installed to complete the assembly of the bullet 200. Note, however, that in the assembled bullet, the tip of the core 260 is exposed and is not completely encased by the outer jacket 250. This can be seen in FIG.

[0030] As seen in FIG. 2, the projectile 110, charge 270, case and detonator 280 are then assembled into a completed cartridge 290. The electronic component 210 may be a tracking device (e.g., a GPS device or other positioning system) designed to track the location of the device when it is active. It typically includes a transmitter capable of transmitting data to a remote computer, such as for communicating location data and other types of data. The electronic component 210 may also include components such as a biomonitor (which may monitor biometric aspects of the target, such as heart rate, temperature, type of target hit, etc.), a microphone, etc. Typically, in addition to having hardware for the specific purpose of the projectile 110 (e.g., sensors, transmitters, etc.), the electronic component 210 includes a processor and physical memory (e.g., RAM, ROM, flash memory, solid-state memory, etc.) that stores programming for the electronic component 210 to perform its functions. The electronic component 210 also includes a battery or other type of portable power source for powering various parts of the electronic component 210.

[0031] The electronic component 210 shown in FIG. 2 is housed in a potting material that is molded to fit within the housing exoskeleton 220. To house the electronic component 210, the electronic component 210 is placed into a mold and then the potting material is injected into the mold, encapsulating the electronic component 210. The potting material then hardens around the electronic component 210, leaving the electronic component 210 assembled such that the potting material is of the appropriate shape to fit within the housing exoskeleton 220. Alternatively, the electronic component 210 can be placed into the housing exoskeleton 220 and the potting material injected directly into the exoskeleton 220 such that the potting material encapsulates the electronic component and hardens to the shape of the inside of the exoskeleton 220.

[0032] The potting material can be a polymer or other material that can be molded in this manner. The electronic component 210 is shown inside the potting material for illustrative purposes in FIG. 2. The potting material can be transparent or translucent so that the electronic component 210 can be seen, or it can be opaque so that the inner electronic component 210 cannot be seen.

[0033] 2 illustrates an antenna 240 that is external to the electronic component 210. The antenna 240 enables wireless communication to / from the electronic component 210 over a variety of wireless communication technologies (e.g., WiFi, cellular communications along various spectrums (e.g., 4G, 5G, etc.), RF, Bluetooth, NFC, etc.). Thus, the signal 130 can be an RF signal or any other type of wireless communication signal.

[0034] It is contemplated that the electronic component 210 can have an internal antenna in addition to / instead of the external antenna 240. Having an internal antenna in addition to the external antenna 240 can provide the electronic component 210 with additional wireless communication modalities and can enable simultaneous data transmission between these modalities. For example, the external antenna 240 can be a long-range RF antenna and the internal antenna can be a short-range antenna such as a Bluetooth or NFC antenna. Another advantage of having both an internal antenna and an external antenna is that the external antenna may be damaged during deployment. If this occurs, the internal antenna (which may be of the same or different wireless technology) serves to provide a backup method for the electronic component 210 to transmit / receive data.

[0035] In an embodiment of the present subject matter, the housing exoskeleton 220 itself can be used as an antenna instead of, or in addition to, the external antenna 240. A projectile having this feature is described in applicant's own U.S. patent application Ser. No. 17 / 487,990, entitled "Ordnance Delivery System Using a Protective Housing as an Antenna," filed Sep. 28, 2021, which is incorporated herein by reference in its entirety.

[0036] It is contemplated that the electronic component 210 may communicate with cellular towers, satellites, repeaters, networking devices, mobile devices, and other computing devices. Thus, the electronic component 210 may communicate directly with the computing device of the controller or may relay signals indirectly via various types of communication technologies.

[0037] In an embodiment, the electronic component 210 can communicate with other electronic components 210 of other bullets 200 to form an ad-hoc mesh wireless network. This can be used to relay a more complete representation of the situation to the controller's computing device. It can also be used to relay signals from one or more bullets 200 back to the controller's computing device. For example, a series of bullets 200 can be fired at various locations near the intended target, at distances such that each bullet 200 is within communication range of two other bullets in the chain, forming a communication chain that leads from the intended target back within the communication range of the operator. In this way, the operator (who may also be the shooter) can track the location of the target using a mobile phone or other small portable device 150, which may only have short-range wireless communication capabilities.

[0038] In an embodiment of the present subject matter, projectile 110 does not use a deceleration sleeve. FIG. 3 is a flowchart of processing performed by system 100, in accordance with an embodiment of the present subject matter.

[0039] In step 310, the projectile 110 enters the target 120 and begins transmitting a signal 130 via a transmitter in the projectile 110. The signal 130 can include information such as the position of the projectile 110, as well as other collected sensor information.

[0040] At step 320 , the computing device 140 receives the signal 130 and at step 330 relays the information in the signal 130 to one or more devices 150 .

[0041] In step 340, device 150 receives information from computing device 140 and determines the position of projectile 110 relative thereto based on the received information. This may be based on location information of projectile 110 as well as the position and orientation of device 150 itself, which may be determined by cell signals, gyroscope measurements, accelerometer information, and / or an on-board GPS component.

[0042] In step 350, device 150 creates an augmented reality overlay that provides a graphical representation of the projectile over a view of the real world based on the determined position of projectile 110 relative to device 150.

[0043] The graphical representation of the projectile may include indicators of the projectile itself, as well as information associated with the projectile. Examples of information associated with the projectile may include distance (e.g., from the operator and / or the AR device presenting the graphical representation), global coordinate information, altitude, movement information, temperature information, target status (e.g., alive or dead), etc.

[0044] FIG. 4 provides an example of a graphical representation displayed by a computing device 150 (in this example, a tablet computer). 4, the real-world environment in front of computing device 150 includes a building 410. A camera on computing device 150 provides a view of the real-world environment through a display screen of computing device 150. Thus, building 410 is also visible on the screen of computing device 150.

[0045] 4 as a dot 420. This dot 420 is superimposed over the location of the projectile 110 in the real world, thus providing the operator of the device 150 with a real-time view of the location of the projectile 110 within the building 410.

[0046] In an embodiment such as that shown in FIG. 4, the graphical representation of the projectile 110 may also include information 421 presented on the screen of the device 150. This information may be information about the projectile 110 itself, information about the target in which the projectile 110 is embedded, environmental information, or any other information that may be collected by sensors on the projectile 110 and transmitted to the device 150 as described herein. For example, based on the sensors included within the projectile 110, the electronic component 210 may classify the target as a vehicle, a person, etc. This classification may be performed based on a comparison of the sensor data to reference sensor signatures associated with various possible targets. In this example, the information 421 includes the distance from the projectile 110 to the device 150 and the altitude of the projectile 110 relative to the device 150.

[0047] Lateral or vertical movement of the projectile 110 relative to the device 150 is easily seen by the user because the position of the dot 420 changes as the projectile 110 moves. However, a simple dot may not allow the user to easily discern movement in the z-direction (i.e., away from or towards the device 150) relative to the device 150. Thus, in embodiments of the present subject matter, the graphical representation may also show movement of the projectile 110 relative to the device 150.

[0048] In some embodiments of the present subject matter, information 421 may include movement information (including direction and speed) as a textual representation. In other embodiments, the presentation of the dot 420 may be changed to indicate movement towards or away from the device 150. For example, the color of the dot 420 may be changed based on the z-direction movement of the projectile 110 relative to the device 150. By default (i.e., no movement), the dot 420 may be colored yellow. Movement away from the device 150 may be colored green (from a yellow-green indicating slow movement away to a bright green indicating rapid movement away), while movement towards the device 150 may be represented by a red dot 420 (from a bright orange indicating slow movement towards to a bright red indicating rapid movement towards).

[0049] In variations of these embodiments, the appearance of the dot 420 may be modified based on a combination of the movement of the dot in the z-direction and the distance of the dot 420 from the device 150. In these embodiments, for example, an entirely different color may be used when the movement of the projectile 110 is toward the device 150 and within a certain distance (e.g., to indicate to the operator that contact with the target carrying the projectile 110 may be imminent). Similarly, a different color may be used when the projectile 110 is moving away from the device 150 and outside a certain distance from the device 150 (e.g., to indicate that the projectile 150 may be moving toward the edge of the detectable / transmittable range).

[0050] In embodiments, an internal digital map of the structure is available (e.g., via a service such as Google Maps or another database that includes such digital maps). In these embodiments, computing device 150 can retrieve this map and use information from projectile 110 to determine where projectile 110 is located in the structure (e.g., which room it is in, where in a particular room it is, etc.) based on a comparison of the real-world location of projectile 110 from the location information to the corresponding location on the map, and present that to the user via computing device 150. This can be in the form of a map or mini-map presented on the screen of computing device 150.

[0051] In variations of these embodiments, computing device 150 is programmed to provide contextual information about projectile 110 relative to the building based on the map information. For example, if the location of projectile 110 changes to be within a certain distance of a particular feature in the map (e.g., within 5 feet of a door), computing device 150 can display a contextual message in information 421 (e.g., "Caution: Target approaching upstairs bedroom door").

[0052] In embodiments of the present subject matter, computing device 150 may also display other information regarding projectile 110, as well as other information obtained from other sources (other computing devices).

[0053] For example, the information transmitted via signal 130 may include identification information that identifies the person and / or weapon that fired projectile 110. Other information may include information received from the weapon indicating how much ammunition the weapon has remaining, which may be displayed by device 150.

[0054] In embodiments, the location of other units (other personnel and / or vehicles) may be displayed by computing device 150. In these embodiments, the other units each carry a computing device with positioning capabilities (e.g., GPS) that can transmit this information to one or more of the other units. Thus, each operator can get a more complete picture of where the unit is located in the environment relative to the target. This reduces the chance of a friendly fire incident and allows for greater coordination and support between units.

[0055] It is contemplated that the signal 130, as well as other information described herein, may be relayed to a computing device at a command post or command vehicle. The computing device at the command post may then present the location of the projectile 110 on a map (which may be obtained from a digital map provider such as Google Maps or other providers) based on the location information from the projectile 110 and the digital map information regarding the location. If operators at the location are transmitting their locations to each other, their locations relative to the projectile 110 may also be added to the map. In this way, the commander at the command post has an overview of the situation at the location and can adjust his or her team accordingly.

[0056] The projectile 110 can be launched in a variety of ways. In an embodiment, the projectile 110 is launched by a weapon (e.g., a rifle or other firearm) that is manually operated by a human user. In other embodiments, the projectile 110 can be launched by a weapon mounted on a vehicle. It is contemplated that the vehicle can be manned or unmanned. Examples of contemplated unmanned vehicles include unmanned aerial vehicles ("UAVs"), unmanned ground vehicles ("UGVs"), and unmanned undersea vehicles ("UUVs"). These unmanned vehicles can have a projectile launcher attached to them or integrated into the system, and the projectile 110 can be automatically launched at a target or remotely piloted and launched by a remote human operator.

[0057] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. If the definition or use of a term in an incorporated document is inconsistent with or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the document does not apply.

[0058] In some embodiments, numbers expressing properties such as amounts of ingredients, concentrations, reaction conditions, and the like, used to describe and claim certain embodiments of the present invention are understood to be modified in some cases by the term "about". Thus, in some embodiments, the numerical parameters set forth in this specification and the appended claims are approximations that may vary depending on the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters are interpreted by taking into account the number of reported significant digits and applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the present invention are approximations, the numerical values ​​set forth in the specific examples are reported as precisely as practicable. The numerical values ​​presented in some embodiments of the present invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

[0059] As used throughout the description herein and the claims that follow, the meanings of "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on," unless the context clearly dictates otherwise.

[0060] The description of ranges of values ​​herein is merely intended to serve as a shorthand method of individually referring to each separate value falling within the range. Unless otherwise indicated herein, each separate value is incorporated into this specification as if it were individually described herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or clearly contradicted by context. Any and all examples provided with respect to specific embodiments herein, or the use of exemplary language (e.g., "etc.") are intended merely to better describe the invention and do not impose limitations on the scope of the invention as otherwise claimed. No language in this specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0061] Grouping of alternative elements or embodiments of the invention disclosed herein is not to be construed as limiting. Each group member can be referenced and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in or deleted from a group for reasons of convenience and / or patentability. When any such inclusion or deletion occurs, the specification is deemed herein to include the group as modified and thus to satisfy the written description of all Markush groups used in the appended claims.

[0062] As used herein, unless the context dictates otherwise, the term "coupled to" is intended to include both direct coupling (where the two elements that are coupled to each other are in contact with each other) and indirect coupling (where one or more additional elements are between the two elements). Thus, the terms "coupled to" and "coupled with" are used interchangeably.

[0063] It will be apparent to those skilled in the art that many more modifications beyond those already described are possible without departing from the inventive concepts herein. Accordingly, the subject matter of the present invention is not to be limited except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms shall be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" shall be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced element, component, or step may be present, utilized, or combined with other elements, components, or steps not expressly referenced. When the specification, claims, or claims refer to one or more of the group consisting of A, B, C, and N, the sentence shall be interpreted as requiring only one element from the group, not A+N, B+N, etc.

Claims

1. 1. A system for real-time target tracking using augmented reality, comprising: A projectile, an electronic component programmed to generate a signal; a transmitter configured to transmit the signal; and 1. An augmented reality system comprising a processor and a display, receiving the signal from the transmitter; determining a position of the projectile relative to the augmented reality system based on the received signals; and presenting to a user via the display a graphical representation of the projectile overlaid on an image of a real-world environment based on the determined position of the projectile relative to the augmented reality system.

2. and at least one of the electronic component and the augmented reality system programmed to determine if the projectile is moving; The augmented reality system comprises: presenting the graphical representation as a first depiction based on a determination that the projectile is stationary; and The system of claim 1 , further programmed to: present the graphical representation as a second depiction based on a determination that the projectile is moving.

3. The system of claim 2 , wherein the first rendering comprises coloring the graphical representation a first color, and the second rendering comprises coloring the graphical representation a second color.

4. The system of claim 2 , wherein the augmented reality system is further programmed to present the graphical representation based on a direction of movement.

5. the electronic component is programmed to classify a target in which the projectile is embedded; The system of claim 1 , further comprising presenting the graphical representation based on the classification.

6. the augmented reality system being programmed to transmit information related to the projectile to a second computing device; 10. The system of claim 1, further comprising: the second computing device programmed to present a second graphical representation associated with the projectile to a second user.

7. determining a position of the projectile relative to the second computing device based on the received information; and 7. The system of claim 6, further comprising the second computing device programmed to: present the second graphical representation based at least in part on the determined relative position.

8. The system of claim 6 , wherein the information includes an identification of an operator who fired the projectile.

9. The system of claim 6 , wherein the second graphical representation includes a presentation of the location of the projectile on a digital map.

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