JPH03245081A - Main sensor determining apparatus - Google Patents

Abstract

PURPOSE:To enhance not only the reliability of the position of a target but also tracking continuity by determining the radar of the optimum preferential order in the tracking of the target as a main sensor on the basis of the level of capacity among a plurality of radars different in capacity. CONSTITUTION:A synthetic processing part 2 regards a target caught within a definite range as the same target among a plurality of the radar data of a sensor group 5 sent from an input processing part 1 and adds, for example, an index using the data related to a time gate waiting for the next radar sweep to the data of the target to sent out the data to a priority order calculation part 3. Next, the calculation part 3 uses the added index to determine the radar high in the use priority order possible in the optimum tracking as a main sensor within an indicated space region on the basis of the capacity including trapping properties corresponding to the new and old arranged topoqraphy of radar and sends out only the data of said radar to a display processing part 4. By this method, even in the sensor group 5 of radars different in capacity or in a radar system sending out no track quality TQ value, a main sensor possible in the optimum tracking can be determined.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a main sensor determination system, and in particular, integrates and processes radar data obtained by various radars constituting a sensor group depending on performance and differences, and processes multiple radars simultaneously. The present invention relates to a main sensor determination system that determines a main sensor to be prioritized for tracking the same captured target.

[Conventional technology]

Conventionally, in systems that process radar data from multiple radar groups with different performances, the T Q
The main sensor was determined based on the (TraCk Quality) value.

This TQ value is expressed as a class value indicating the degree of certainty sufficient to determine that the target captured by the radar is a true target, and a radar with a high TQ value is a so-called radar with excellent performance. It has an excellent ability to reliably capture targets in a narrow area. In actual practice, a plurality of sensor groups having different TQ values are operated.

[Problem to be solved by the invention]

In the main sensor determination system described above, when a target is located in an area where the coverage areas of multiple radars with different performances overlap, the determination is simply made based on the TQ value. The drawback is that the precision radar becomes the main sensor, reducing the position reliability of the system.

Another drawback is that radars that do not transmit TQ values cannot be used as the main sensor.

[Means to solve the problem]

The main sensor determination system of the present invention includes an input processing section that inputs radar data acquired by a plurality of radars with different performances operated as sensors for target detection and performs format conversion necessary for inputting the radar data; The radar data format-converted in the section is processed in an integrated manner, including the functional differences of each of the plurality of radars, and targets captured within a certain distance by each of the plurality of radars are likely to be the same target. an integrated processing unit that determines that the object is a target and outputs it with an index including current and predicted position information; and an operational unit suitable for tracking the target specified by the index assigned by the integrated processing unit. a priority calculation unit that determines a priority order for each of the plurality of radars based on their performance, and determines and operates the radar with the highest priority as a subsequent main sensor; and a display unit that displays and processes the output of the radar determined as a sensor.

Furthermore, the main sensor determination system of the present invention determines the priority by
A configuration is provided in which performance is expressed as superiority or inferiority corresponding to the magnitude of target acquisition accuracy between the plurality of radars.

〔Example〕

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

FIG. 1 is a block diagram showing one embodiment of the main sensor determination system of the present invention. The main sensor determination system according to the present invention includes an input processing section 1, an integrated processing section 2, and an effectiveness calculation section 3.
, and a display processing unit 4, and FIG. 1 also shows a plurality of radars (1), (2), (3), and (3) with different performances.
The sensor group 5 including (N) is also shown.

The input processing unit 1 inputs N pieces of radar data from sensor groups 5 with different performances, formats it into data including the target position, speed, traveling direction, reporting source, etc. indicated by each radar data, and performs integration processing. Send to section 2.

If there is a target captured within a certain distance by multiple radar data from the sensor group 5, the integrated processing unit 2 considers this to be the same target, adds an index to the data indicated by this target, and calculates the priority. Send to Department 3.

In this case, the index to be given to the targets considered to be the same target is, for example, data regarding the waiting time gate at the next radar sieve based on the position information of the target. That is, if the radar waits for acquisition of the target during such a time gate, the target will be tracked with an accuracy corresponding to the accuracy of radar acquisition. The superiority or inferiority of radar performance in operational conditions is expressed by the performance that takes into account the new or old radar, the acquisition ability corresponding to the topography, etc. It is best to track the target with a radar that has operational priority. The priority calculation unit 3 calculates and determines as the main sensor the radar with the highest operational priority that can optimally track the spatial area specified by the index added by the integrated processing unit 2. Only the radar data of is sent to the display processing section 4.

The display processing unit 4 uses the radar data of the main sensor to
A symbol is displayed at the target position, and the radar data is displayed on the display.

〔Effect of the invention〕

As explained above, the present invention determines the main sensor that can optimally track even in a system that has a group of sensors with different performances or a radar that does not transmit TQ values, based on the priority set based on the superiority or inferiority of performance. This has the effect of increasing the reliability of the target position and improving tracking continuity.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the primary sensor determination system of the present invention. 1... Input processing unit, 2... Integration processing unit, 3...-Priority calculation unit, 4... Display processing unit.

Claims (1)

[Scope of Claims] 1. An input processing unit that inputs radar data acquired by a plurality of radars with different performances operated as sensors for target detection and performs format conversion necessary for inputting the radar data, and the input processing unit The radar data format-converted is processed in an integrated manner, including the functional differences of each of the plurality of radars, and targets captured within a certain distance by each of the plurality of radars are likely to be the same target. an integrated processing unit that determines this and outputs it with an index including current and predicted position information; and an operational unit suitable for tracking the target specified by the index assigned by the integrated processing unit. a priority calculation unit that determines a priority order based on the performance of each of the plurality of radars, and determines and operates the radar with the highest priority as a subsequent main sensor; 1. A main sensor determination system comprising: a display unit that displays and processes radar output determined as a main sensor. 2. The main sensor determination system according to claim 1, wherein the priority is expressed by the superiority or inferiority of performance corresponding to the magnitude of target acquisition accuracy among the plurality of radars.