A ballistic detection system includes a first camera; a second camera; a solar block device associated with at least one camera of the first and second cameras, wherein the solar block device is configured and arranged to block a solar disc in a field of view of the at least one camera; and a ballistics analysis computer configured to obtain image data captured by the first and second cameras, determine at least two points in three-dimensional space, which correspond to image artifacts of a projectile, using intrinsic and extrinsic parameters of the first and second cameras, define a trajectory of the projectile within a target volume using the at least two points in three-dimensional space, and find a point of intersection of the trajectory of the projectile with an object associated with the target volume.

A ballistic detection system includes a first camera; a second camera; a solar block device associated with at least one camera of the first and second cameras, wherein the solar block device is configured and arranged to block a solar disc in a field of view of the at least one camera; and a ballistics analysis computer configured to obtain image data captured by the first and second cameras, determine at least two points in three-dimensional space, which correspond to image artifacts of a projectile, using intrinsic and extrinsic parameters of the first and second cameras, define a trajectory of the projectile within a target volume using the at least two points in three-dimensional space, and find a point of intersection of the trajectory of the projectile with an object associated with the target volume.

A ballistic detection system includes a radar system; electromagnetic radiation detection equipment positioned on only a single side of a target volume; and a ballistics analysis computer configured to obtain image data captured by first and second cameras in accordance with timing specified by radar data, determine points in three-dimensional space, which correspond to image artifacts of a projectile, using intrinsic and extrinsic parameters of the first and second cameras, define a trajectory of the projectile within a target volume using the points in three-dimensional space, and find a point of intersection of the trajectory of the projectile with an object associated with the target volume.

A ballistic detection system includes a radar system; electromagnetic radiation detection equipment positioned on only a single side of a target volume; and a ballistics analysis computer configured to obtain image data captured by first and second cameras in accordance with timing specified by radar data, determine points in three-dimensional space, which correspond to image artifacts of a projectile, using intrinsic and extrinsic parameters of the first and second cameras, define a trajectory of the projectile within a target volume using the points in three-dimensional space, and find a point of intersection of the trajectory of the projectile with an object associated with the target volume.

A vehicle radar system (3) which, for each one of a plurality of radar cycles, is arranged to, provide a measured azimuth angle (θ.sub.m) and radial velocity (v.sub.dm) for a first plurality of detections (9, 20). For each one of the plurality of radar cycles, the radar system (3) is arranged to select one of these detections for each one of two velocity components (v.sub.x, v.sub.y) in a set of components (v.sub.x, v.sub.y, a.sub.x, a.sub.y; a) to be determined; select one detection from a second plurality of detections (9, 20) for each one of at least one corresponding acceleration component (a.sub.x, a.sub.y; a); calculate the components (v.sub.x, v.sub.y, a.sub.x, a.sub.y; a) for the selected detections; determine a calculated radial velocity (v.sub.dc) for each one of at least a part of the other detections in the first plurality of detections (9, 20) using the calculated components (v.sub.x, v.sub.y, a.sub.x, a.sub.y; a); determine an error between each calculated and measured radial velocity (v.sub.dc, v.sub.dm); and determine the number of inliers. The set of components (v.sub.x, v.sub.y, a.sub.x, a.sub.y; a) that results in the largest number of inliers is then chosen.

The vehicle odometry and motion direction system and method is described. The vehicle odometry and motion direction system and method determines if the first ground speed data is acceptable. Ground speed data is calculated for all targets within a radar's field of view and targets ground speed data is processed to determine second ground speed data. The vehicle odometry and motion direction system and method determines trusted ground speed data using first ground speed data and second ground speed data and adjusts the trusted ground speed data due to errors in radar Doppler speed data.

A radar device includes a first radar and a second radar that are arranged at positions separated from each other, and of which detection ranges are at least partially overlapped; and a detection unit that detects at least one of a moving direction and a velocity vector of a reflection point existing in an overlapped portion of the detection ranges, based on a first detection result of the first radar and a second detection result of the second radar.

The invention describes a method for reducing interference effects in a radar system, which has at least two transceiver units (S1, S2), which are in particular spatially separated from one another, wherein the method comprises the following steps: —a transmission step (VS1), in which a first transmission signal (sigTX1) of the first transceiver unit (S1) is sent and received to and by a second transceiver unit (S2) and a second transmission signal (sigTX2) of the second transceiver unit (S2) is sent and received to and by the first transceiver unit (S1) via a radio channel (T), wherein the transmission signals (sigTX1, sigTX2) are modulated according to an orthogonal frequency multiplex method; and—a pre-correction step (VS2), in which correction values (γ1, γn, γ2) are determined from the received transmission signals (sigTX1, sigTX2) and in particular are exchanged between the transceiver stations (S1, S2), wherein the received transmission signals (sigRX1, sigRX2) are postprocessed on the basis of the correction values (γ1, γn, γ2), so that influences of interference variables, in particular of phase noise and/or a time offset and/or unknown initial phase positions, are reduced.

The invention describes a method for reducing interference effects in a radar system, which has at least two transceiver units (S1, S2), which are in particular spatially separated from one another, wherein the method comprises the following steps: —a transmission step (VS1), in which a first transmission signal (sigTX1) of the first transceiver unit (S1) is sent and received to and by a second transceiver unit (S2) and a second transmission signal (sigTX2) of the second transceiver unit (S2) is sent and received to and by the first transceiver unit (S1) via a radio channel (T), wherein the transmission signals (sigTX1, sigTX2) are modulated according to an orthogonal frequency multiplex method; and—a pre-correction step (VS2), in which correction values (γ1, γn, γ2) are determined from the received transmission signals (sigTX1, sigTX2) and in particular are exchanged between the transceiver stations (S1, S2), wherein the received transmission signals (sigRX1, sigRX2) are postprocessed on the basis of the correction values (γ1, γn, γ2), so that influences of interference variables, in particular of phase noise and/or a time offset and/or unknown initial phase positions, are reduced.

The disclosed FMCW radar system is configured to achieve a wide synthetic bandwidth of operation and a high range resolution. The disclosed FMCW radar system includes a receiver that combines the intermediate frequency (IF) components of multiple narrowband receivers to achieve the millimeter-scale range resolution. The disclosed FMCW radar system can be easily scaled, which enables it to be deployed in large arrays of antennas in order to attain high angular resolution. Additionally, the operation frequency of the disclosed FMCW radar system enables millimeter level cross-range resolution. In this manner, accurate estimation of the location and/or velocity of the objects within the local-sensing range (and potentially beyond) can be achieved.