A system and method for determining a performance metric based on a discharge event of a firearm includes a first inertial measurement unit (IMU) and a first event detection module. The first IMU is disposed on a first firearm and senses movement including at least one of accelerations and rotations. The first event detection module can receive a plurality of first input signals from the first IMU indicative of the movement. The first event detection module can identify an occurrence of a first shot discharge of the first firearm at a shot time based on the plurality of first input signals; determine a first orientation of the first firearm at the shot time; determine a second orientation of the first firearm at a first time before the shot time; compare the first and second orientations; and assign a first stability index based on the first and second orientations.

A system and method for determining a discharge event of a firearm is provided. An event detection module receives (i) acceleration input signals including a first acceleration input signal along a first axis, a second acceleration input signal along a second axis and a third acceleration input signal along a third axis; and (ii) rotation input signals including a first rotation input signal around the first axis, a second rotation input signal around the second axis and a third rotation input signal around the third axis. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time.

A system and method for determining a discharge event of a firearm is provided. An event detection module receives (i) acceleration input signals including a first acceleration input signal along a first axis, a second acceleration input signal along a second axis and a third acceleration input signal along a third axis; and (ii) rotation input signals including a first rotation input signal around the first axis, a second rotation input signal around the second axis and a third rotation input signal around the third axis. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time.

A system and method for determining a discharge event of a firearm includes receiving, by an event detection module, acceleration input signals and rotation input signals. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time. The sample event candidate is received at a machine learning module. Characteristics of the discharge event detected are determined including ammunition type based on the acceleration and rotation input signals in the sample event candidate.

A method for determining a performance metric based on a discharge event of a firearm is provided. A plurality of first input signals over a sample window of time from a first inertial measurement unit (IMU) configured on the first firearm are received by a first event detection module associated with the first firearm of a first user. An occurrence of a first shot discharge of the first firearm at a first time based on the plurality of first input signals is identified by the first event detection module. An occurrence of a second shot discharge of the first firearm at a second time based on the plurality of first input signals is identified by the first event detection module. A first split time is determined for the first user based on a difference between the first and second times.

A method for determining a performance metric based on a discharge event of a firearm is provided. A plurality of first input signals over a sample window of time from a first inertial measurement unit (IMU) configured on the first firearm are received by a first event detection module associated with the first firearm of a first user. An occurrence of a first shot discharge of the first firearm at a first time based on the plurality of first input signals is identified by the first event detection module. An occurrence of a second shot discharge of the first firearm at a second time based on the plurality of first input signals is identified by the first event detection module. A first split time is determined for the first user based on a difference between the first and second times.

A system and method for determining an orientation of a firearm includes a first position sensor, a second position sensor and a transmitter. The first position sensor can be disposed at a first location on the firearm. The second position sensor can be disposed at a second location on the firearm. The first and second locations can be distinct and define a line parallel to an axis of a barrel of the firearm. The transmitter can be configured to communicate a signal. The first and second position sensors receive the signal from the transmitter and determine one of an orientation and a heading of the firearm based on the signal.

A system and method for determining an orientation of a firearm includes a first position sensor, a second position sensor and a transmitter. The first position sensor can be disposed at a first location on the firearm. The second position sensor can be disposed at a second location on the firearm. The first and second locations can be distinct and define a line parallel to an axis of a barrel of the firearm. The transmitter can be configured to communicate a signal. The first and second position sensors receive the signal from the transmitter and determine one of an orientation and a heading of the firearm based on the signal.

A ballistic shield apparatus for a weapon includes: a flexible ballistic shield made of penetration-resistant material, the ballistic shield having opposed front and rear faces, spaced-apart side edges connecting spaced-apart top and bottom edges, and a central area bounded by the side edges; one or more flexible securing members extending laterally outward from each of the side edges, each of the one or more flexible securing members including a releasable connector disposed on a distal portion thereof; and at least one releasable connector disposed on the ballistic shield, the releasable connectors collectively configured such that the distal portion of each of the one or more flexible securing members can be releasably secured to the central area of the ballistic shield, or to a distal portion of one of the one or more flexible securing members.

A system and method for determining an operational status of a firearm based on a discharge event is provided. A first acceleration is measured on the firearm at a first time. A second acceleration is measured on the firearm at a second time. A measured shot separation of first and second accelerations between the first and second times is calculated. The measured shot separation is compared to at least one shot separation threshold. A speed of a movement member in the firearm is assigned based on the comparing. The operational status of the firearm is determined based on the assigned speed. The operational status is communicated to a first user of the firearm in real-time.