JPS63184085A - Tracking processor - Google Patents

Abstract

PURPOSE:To improve followability in tracking by having a plurality of tracking gates for every swing acceleration and, moreover, controlling target detecting level for every tracking gate. CONSTITUTION:Data obtained from a radar instrument are inputted to a target tracking unit 3 and a target is detected by a plurality of tracking gates from a target calculator 4 and target detecting level to output target data to a target buffer 5. The gate calculator 4 outputs the tracking gates and tracking data to a gate correlation processor 6 and outputs the tracking gates and target detecting level to the target detector 3. Thus, by having a plurality of tracking gates for defining a range wherein the position correlation of the target and a track resulted from the tracking of the target at every rotational period in accordance with swing acceleration and further setting optimum target detecting level corresponding to a plurality of the tracking gates for each of a plurality of the tracking gates, target detection is facilitated and tracking is continued.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a radar device, in particular, a radar device that has a plurality of tracking gates that correlate the positions of a target and a track according to turning acceleration, and The present invention relates to a tracking processing device that controls a target detection level to continue tracking.

[Conventional technology]

Conventionally, this type of radar device has a single tracking gate centered on the predicted position of the track, and has also been a tracking processing device that controls the target detection level of only this tracking gate.

[Problem that the invention seeks to solve]

The above-mentioned conventional tracking processing device has a drawback that only a single tracking gate is used, and that if the target detection level is not controlled appropriately according to the turning, it may result in reeds, tracking failure, or incorrect tracking.

[Means for solving problems]

The tracking processing device of the present invention has the following characteristics: the turning speed of an aircraft, etc., and oG=
A gate calculation unit that calculates a tracking gate based on a turning acceleration of nG (G: indicates gravitational acceleration); and a gate correlation processing unit that prioritizes correlation between a plurality of tracking gates and correlates a target and a track. , has a target detection section that controls the detection level of the target.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows one embodiment of the invention.

The data (R,, θi) obtained from the radar device is input to the target detection section 3. The target detection unit: 3 detects the target based on the tracking gate (Go-Gn) and target detection level (THGo-THGo) from the gate calculation unit = 4,
Output the target data (Xi, Yi) to the target buffer:5.

Track buffer: 2 is the track data (X, i, Y,
i.

VX +-1+"'f j-1, Gn) is output to the gate calculation section 4, and the gate calculation section 4 outputs the tracking gate (Go-Gn) and the tracking gate priority data ( GkT (0≦≦n) and tracking data (Xpi
.

Ypi) and outputs the tracking gate (Go) to the target detection unit:3.
”-Gn) and target detection level (THGo-THG r
l ) is output.

The gate correlation processing unit 6 performs correlation processing on the target data (Xt, Yt) from the target buffer 5, the tracking gate (Go"Gn), and the tracking gate priority data (Gk),
Correlated data (Xpi +Y
pi, xi, Yi) and a correlation gate (GK).

The smoothing processing unit near outputs the output data from the track buffer = 2 (Xsi-1*YSt-1+■Xl-1+■yi-1
) and the data from the gate correlation processing unit = 6, and the smoothed data (Xsi.

Ys i * xs i + vys i) and the correlation gate (G*) are output.

The track prediction processing 8 executes the track prediction process using the data from the smoothing processing unit Near, and sends the smoothed data (Xs++Ys++Vxsi+”ysl) + track prediction data (Xp*+t, Ypi+t) and the correlation gate (
Gk') is output.

The timing control section 9 controls the processing timing of each section based on the timing from the radar device 1.

〔Effect of the invention〕

As explained above, the present invention has the effect of improving tracking performance by having a plurality of tracking gates for each turning acceleration and controlling the target detection level for each tracking gate. .

[Brief explanation of the drawing]

FIG. 1 shows an example of the present invention, FIG. 2 shows an example of a conventional device,
FIG. 3 shows an example of implementation using the apparatus of the present invention, and FIG. 4 shows an example of the target detection level. The reference numerals in FIG. 1 are as follows. 1... Radar device, 2... Track buffer, 3...
- Target detection unit, 4... Gate calculation unit, 5... Target buffer, 6... Gate correlation processing unit, 7... Smoothing processing unit, 8... Track prediction unit, 9... Timing control section. xo< (,5 Z

Claims (1)

[Claims] In a method for tracking targets such as aircraft, a plurality of tracking gates are provided for each radar rotation period in accordance with the turning acceleration, and the tracking gates define the range in which the positional correlation between the target and the track that is the tracking result for the target is performed. A tracking processing device that facilitates target detection and continues tracking by setting an optimal target detection level corresponding to a plurality of tracking gates for each of the plurality of tracking gates.