JP4250579B2 - Tracking radar device - Google Patents

Description

  The present invention relates to a tracking radar apparatus that tracks a moving target, and more particularly to a technique for improving operability when shifting from searching for a target to tracking.

  Conventionally, a tracking radar device that detects and tracks a moving target is known. When tracking a target moving with such a tracking radar device, unnecessary reflected waves called clutter are simultaneously received in addition to reflected waves from the target. When the clutter is present in a wide range and the unnecessary reflected wave from the clutter is large, the tracking radar device can easily detect the reflected wave from the clutter from the target, so that a state in which the clutter is tracked erroneously occurs.

  Under such circumstances, in a conventional tracking radar device, after capturing a target, an operation related to the transition of the tracking mode is performed by a manual operation. FIG. 9 is a flowchart showing a procedure for shifting the conventional tracking radar apparatus to the tracking mode by manual operation.

  First, the operator performs a capturing operation for capturing the target (step S1). The tracking radar apparatus receives this capturing operation and executes a capturing process (step S2). Here, the capturing process is a process of irradiating a beam in a designated direction and detecting a target.

  Next, it is checked whether or not the target has been detected by the capturing process (step S3). If it is determined in step S3 that the target has not been detected, that is, it has not been detected, the process ends. On the other hand, if it is determined in step S3 that the target has been detected, the mode automatically shifts to the tracking mode in step S4 and subsequent steps.

  In the tracking mode, when a plurality of targets are captured by the capturing process, a number (referred to as a target number) is assigned to each target, and the tracking process is performed for each target number. In the following, in order to simplify the description, a case where one target is tracked will be described.

  When the tracking mode is entered, first, the tracking number is initialized to “0”, and the tracking end flag is initialized to “0” (step S4). Next, the tracking number is incremented (+1) (step S5). Next, a tracking process is executed (step S6). Here, the tracking process is a process of irradiating a beam in the direction of the target and acquiring information regarding the target.

  Information about the target obtained by this tracking process is displayed on a display device (not shown) as the tracking status (step S7). The operator looks at the movement of the target displayed on the display device and determines whether the target is a moving body or a clutter. For example, when it is determined that the target of the target number “m” is clutter, the operator designates the target number “m” and performs the tracking end operation (step S8). In response to the tracking end operation, the tracking end flag is set to “1”.

  If the tracking end operation is not performed, the original state of the tracking end flag is maintained in step S8. Next, it is checked whether or not the tracking end flag is “1” (step S10). If it is determined in this step S10 that the tracking end flag is “1”, the processing in the tracking mode ends. On the other hand, if it is determined in step S10 that the tracking end flag is not “1”, the sequence returns to step S5 and the above-described processing is repeated.

  As a technique for tracking a target, Patent Literature 1 discloses a tracking radar control device that can reduce the possibility of losing sight of the target and eliminate unnecessary power consumption. In this tracking radar control device, the controller predicts the target position at the time of the next tracking based on the target position data from the signal processor, sets the measurement range, and outputs it to the signal processor. At the same time, the target position at the time of the next tracking is predicted, a measurement range for measuring the noise level at the predicted position is set and output to the noise level measuring instrument. Further, the controller compares the noise levels in the vicinity of the target and the next tracking range, and sets the type of signal processing during the next tracking operation based on the level difference.

  Next, a tracking operation is executed, and target position data is output from the signal processor to the controller. In addition, the noise level measuring device measures the noise level in the vicinity of the target and the noise level in the vicinity of the position where the presence of the target is predicted in the next tracking, and outputs it to the controller.

  Further, Patent Document 2 is a correlation process for determining whether detection data and wake information are the same target in an environment where unnecessary signals such as a plurality of adjacent targets and clutter are observed. A target correlator is disclosed that provides the operator with the situation as a limit of automatic processing and outputs a highly reliable correlation result.

This target correlator calculates the reliability of the association between the track and the detection data based on the target existence distribution consisting of the wake error evaluation amount and the detection accuracy of the detection data, and when the reliability satisfies the required condition. Outputs the association to the display unit as the same target, and outputs the status to the display unit as a determination impossible when the reliability of all the associations for one track does not satisfy the required condition.
JP-A-7-253466 JP-A-11-38131

  By the way, in the above-described conventional tracking radar device, the erroneous tracking is performed due to the influence of clutter or the like, and the initial tracking stage in which the number of tracking is less than that in the case where the number of tracking is long and the tracking is continued. There are more cases of.

  However, in the conventional tracking radar device, the same operation is required regardless of the number of tracking as a method for terminating erroneous tracking. For example, the tracking of the target number m with 50 tracking times and the tracking of the target number n with 5 tracking times are the same in the method of ending the incorrect tracking, and the operator selects the target number “m” or After specifying “n”, it is necessary to perform a tracking end operation.

  Therefore, if there are many erroneous trackings at the initial stage of tracking immediately after the target is captured and then the tracking mode is entered, the operator must perform complicated operations (target number designation and tracking end operation) in order to end the erroneous tracking. ), It is not possible to focus on the determination to determine the correct tracking from the tracking status displayed on the display device, and there is a problem that a long time is required until the next capturing operation. .

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tracking radar device that can simplify a manual operation of shifting to a tracking mode after capturing a target.

In order to achieve the above object, a tracking radar device according to a first invention includes a scanning unit that scans a capture beam in a specified direction, and a tracking mode that tracks a target detected by scanning the capture beam with the scanning unit. automatically the transition means for shifting, display means for displaying the tracking status of the target in the migrated tracking mode by shifting unit, the tracking early stages enter the variable of continued tracking, tracking terminates after tracking early stage The input means for performing the operation , and if the continuation of tracking is not input by the input means at the initial tracking stage and within the predetermined number of tracking limits, the tracking is automatically terminated and the tracking is ended by the input means after the initial tracking stage. Control means for terminating tracking when an operation is performed .

The tracking radar apparatus according to the second aspect of the invention automatically shifts to a specified range input means for inputting a specified range and a tracking mode for tracking a target detected from the specified range input by the specified range input means. and transition means, display means for displaying the tracking status of the target in the migrated tracking mode by shifting unit, input means for tracking the initial stage enter the variable of continued tracking, after tracking the initial stage of performing tracking termination operation In the initial tracking stage, when the continuation of tracking is not input by the input means within the predetermined number of tracking limits, the tracking is automatically ended, and the tracking end operation is performed by the input means after the initial tracking stage. And a control means for terminating the tracking .

According to the tracking radar device of the first aspect of the invention, the tracking continuation is input from the input means at the initial tracking stage with respect to the target to be tracked, and is input at the initial tracking stage and within the predetermined tracking limit number. If the continuation tracking permission is not input by the means, the tracking is automatically terminated, so that the erroneous tracking at the initial tracking stage can be automatically terminated without performing the tracking termination operation. As a result, it is possible to simplify the manual operation when shifting from the target search to the tracking mode. Further, since it is only necessary to input “continuation of tracking” only when tracking is continued, it is possible to prevent an erroneous operation associated with complicated operations.

  Further, according to the tracking radar device of the second invention, the designated range is input by the designated range input means, and the mode is automatically shifted to the tracking mode of the target detected from the inputted designated range. Therefore, in addition to the effect of the tracking radar device according to the first invention, manual tracking from a specific search range can be performed without using a dedicated acquisition beam.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram illustrating the configuration of the tracking radar apparatus according to the first embodiment of the present invention. This tracking radar device includes an antenna device 1, a receiver 2, a detection device 3, a tracking filter device 4, a display device 5, an input device 6, a control device 7, a beam control device 8, and a transmitter 9. Yes.

  The scanning means of the present invention includes an antenna device 1, a beam control device 8 and a transmitter 9. Further, the shifting means of the present invention is composed of a tracking filter device 4 and a control device 7. Further, the input means of the present invention is composed of the input device 6. Furthermore, the control means of the present invention comprises a control device 7.

  The antenna device 1 converts a transmission signal sent from the transmitter 9 into a radio wave, and transmits it as a transmission wave in a direction according to the beam control signal sent from the beam control device 8 via the transmitter 9. The transmission wave is reflected by the target and is sent to the receiver 2 as a reception signal. The receiver 2 converts the received signal sent from the antenna device 1 into a digital video signal. The digital video signal obtained by the conversion in the receiver 2 is sent to the detection device 3.

  The detection device 3 detects the target from the digital video signal sent from the receiver 2. The target detected by the detection device 3 is sent to the tracking filter device 4. The tracking filter device 4 determines the irradiation direction of the next beam based on the target sent from the detection device 3, and sends the determination result to the control device 7. In addition, the tracking filter device 4 sends the target sent from the detection device 3 to the display device 5.

  The display device 5 displays the target sent from the tracking filter device 4 on the screen. The operator determines whether the target is a moving object or a clutter while observing the target displayed on the display device 5 and determines whether or not to continue tracking.

  The input device 6 includes, for example, a keyboard, and is used to input a capture start command for starting a capture process, a tracking continuation command for instructing continuation of tracking, a tracking end command for instructing termination of tracking, and the like. Is done. The command input from the input device 6 is sent to the control device 7.

  The control device 7 controls whether or not to continue tracking according to the target sent from the tracking filter device 4 and the command input from the input device 6. Details of the processing performed by the control device 7 will be described later.

  The beam control device 8 generates a beam control signal instructing the beam irradiation direction based on the control signal from the control device 7. The beam control signal generated by the beam control device 8 is sent to the transmitter 9. The transmitter 9 generates a transmission signal, sends it to the antenna device 1, and controls the transmission direction of the transmission wave transmitted from the antenna device 1 in accordance with the beam control signal from the beam control device 8.

  Next, in the tracking radar apparatus according to the first embodiment of the present invention configured as described above, operations related to the transition of the tracking mode by manual operation from target detection will be described with reference to the flowchart shown in FIG. . It should be noted that the same or equivalent processing steps as those in the flowchart of FIG.

  First, the operator performs a capturing operation for capturing the target (step S1). That is, the operator operates the input device 6 and inputs a capture start command. The acquisition start command input from the input device 6 is sent to the control device 7.

  When receiving the acquisition start command from the input device 6, the control device 7 executes acquisition processing (step S2). As described above, the acquisition process is a process of irradiating the acquisition beam in the direction specified by the acquisition start command and detecting the target. More specifically, the control device 7 generates a control signal for instructing to irradiate the capture beam in the direction specified by the capture start command from the input device 6 and sends the control signal to the beam control device 8. The beam control device 8 generates a beam control signal in response to this control signal and sends it to the transmitter 9.

  The transmitter 9 controls the antenna apparatus 1 so as to irradiate the capture beam in the direction specified by the beam control signal, and sends a transmission signal to the antenna apparatus 1. As a result, a transmission wave forming a capture beam is transmitted from the antenna device 1. Further, the antenna device 1 receives a reflected wave obtained by reflecting the transmission wave at the target, and sends it to the receiver 2 as a received signal.

  The receiver 2 converts the reception signal sent from the antenna device 1 into a digital video signal and sends it to the detection device 3. The detection device 3 detects the target from the digital video signal from the receiver 2 and sends it to the display device 5 and the control device 7. As a result, the captured target is displayed on the screen of the display device 5.

  In the tracking radar device according to the first embodiment, the capture start command is configured to be input from the input device 6 by the operator, but may be configured to be input from another system. In the tracking radar device according to the first embodiment, the capturing process is performed only once. However, the tracking process is performed only a predetermined number of times or repeatedly until a stop operation is performed. Can be configured.

  Next, it is checked whether or not the target is detected by the capturing process in step S2 (step S3). That is, the control device 7 checks whether there is a target sent from the tracking filter device 4. If it is determined in step S3 that the target has not been detected, that is, it has not been detected, the process ends. On the other hand, if it is determined in step S3 that the target has been detected, the mode automatically shifts to the tracking mode in step S4 and subsequent steps.

  In the tracking mode, when a plurality of targets are captured by the capturing process, a number (referred to as a target number) is assigned to each target, and the tracking process is performed for each target number. In the following, in order to simplify the description, a case where one target is tracked will be described.

  When the tracking mode is entered, first, the tracking number is initialized to “0”, and the tracking end flag and the operation completion flag are initialized to “0” (step S4). Next, the tracking number is incremented (+1) (step S5).

  Next, a tracking process is executed (step S6). As described above, the tracking process is a process of irradiating a beam in the direction of the detected target and acquiring information regarding the target. More specifically, the control device 7 generates a control signal instructing that the beam should be irradiated in the target direction sent from the tracking filter device 4 and sends the control signal to the beam control device 8.

  The beam control device 8 generates a beam control signal in response to this control signal and sends it to the transmitter 9. The transmitter 9 controls the antenna device 1 so that the beam is irradiated in the direction specified by the beam control signal, and sends the transmission signal to the antenna device 1. Thereby, a transmission wave forming a beam is transmitted from the antenna device 1. Further, the antenna device 1 receives a reflected wave obtained by reflecting the transmission wave at the target, and sends it to the receiver 2 as a received signal.

  The receiver 2 converts the reception signal sent from the antenna device 1 into a digital video signal and sends it to the detection device 3. The detection device 3 detects a target from the digital video signal from the receiver 2 and acquires information about the target. Information about the target acquired by the detection device 3 is sent to the display device 5 and the control device 7. Through the above tracking process, information regarding the target is displayed as a tracking status on the screen of the display device 5 (step S7).

  The operator looks at the movement of the target displayed on the display device 5 and determines whether the target is a moving body or a clutter. If it is determined that the target of interest is a moving body, a tracking continuation enabling operation is performed (step S20). That is, the operator operates the input device 6 to input a tracking continuation enable command. The tracking continuation enable command can be input by, for example, inputting a target number from the input device 6 or pressing a tracking continuation enable switch (not shown) provided in the input device 6. The tracking continuation enable command input from the input device 6 is sent to the control device 7.

  When receiving the tracking continuation enable command from the input device 6, the control device 7 sets the operated flag to “1” (step S21). If the tracking continuation enabling operation is not performed, the operated flag is maintained in the original state in step S21. Next, it is checked whether or not the current tracking number is a predetermined tracking limit number (step S22).

  Here, when it is determined that the number of tracking is not the tracking limit number, the sequence proceeds to step S9. On the other hand, if it is determined that the tracking number is the tracking limit number, it is next checked whether or not the operated flag is “1” (step S23). If it is determined in this step S23 that the operated flag is “1”, it is recognized that the tracking should be continued, and the sequence proceeds to step S9.

  On the other hand, if it is determined in step S23 that the operation completion flag is not “1”, it is recognized that the tracking should be ended, and the tracking end flag is set to “1” (step S24). Thereafter, the sequence proceeds to step S9. With the above processing, the function of automatically ending tracking is realized when the tracking continuation enabling operation is not performed within the tracking limit count.

  In steps S8 to S10, the function of ending tracking is realized in the same manner as in the conventional method (see FIG. 9). That is, for example, when the operator determines that the tracking of the target having the target number “m” is to be ended, the operator performs the tracking end operation by designating the target number “m” (step S8). In response to the tracking end operation, the tracking end flag is set to “1”.

  If the tracking end operation is not performed, the original state of the tracking end flag is maintained in step S8. Next, it is checked whether or not the tracking end flag is “1” (step S10). If it is determined that the tracking end flag is “1”, the tracking mode process ends. On the other hand, if it is determined that the tracking end flag is not “1”, the sequence returns to step S5 and the above-described processing is repeated.

  Next, effects of the tracking radar device according to the first embodiment of the present invention will be described in comparison with a conventional tracking radar device. FIG. 3 is a diagram for explaining the number of operations in a case where a conventional tracking radar apparatus shifts from target capture to tracking mode. Assume that five targets, target number 1 to target number 5, have been captured by the capture operation. Of these, only the targets of target numbers 1 and 3 are moving bodies (detection), and the remaining targets of target numbers 2, 4 and 5 are clutter (false detection).

  If the operator determines that the target of the target number 2 is erroneously detected by the first tracking, first, the target number “2” is specified and the tracking end operation is performed. Thereby, the tracking for the target of target number 2 is completed. Similarly, the tracking end operation is performed on the targets of the target numbers 4 and 5 to sequentially end the tracking. Therefore, three operations are required to end tracking of the false detection target.

  On the other hand, FIG. 4 is a diagram for explaining the number of operations when the tracking radar apparatus according to the first embodiment of the present invention shifts from target capture to tracking mode. The target captured by the capture operation is assumed to be the same as that shown in FIG. Further, it is assumed that the tracking limit number is set to “4”. If the operator determines that the target of target number 1 has been correctly detected by the first and second tracking, the operator first performs a tracking continuation operation for the target of target number 1.

  Thereby, the tracking with respect to the target of the target number 1 is continued. Similarly, in the third tracking, the tracking continuation enabling operation is performed for the target of target number 3 that is determined that the target of target number 3 is correctly detected. In the fourth tracking, since the number of tracking reaches the number of tracking limit, the tracking for the remaining targets Nos. 2, 4, and 5 automatically ends.

  Therefore, two operations are sufficient to end tracking of the false detection target. As a result, it is possible to simplify the manual operation related to the transition from the target search to the tracking mode. In addition, since it is only necessary to perform the operation that allows the tracking to be continued only when the tracking is continued, it is possible to prevent an erroneous operation associated with a complicated operation.

  According to the tracking radar device according to the first embodiment of the present invention configured as described above, the operator determines that the tracking is incorrect (the target is clutter) before reaching the tracking limit number. In this case, if the target is left unattended, the tracking is automatically terminated when the limit number of times of tracking is reached, so there is no need to operate the input device 6 to terminate the tracking. On the other hand, when it is determined that the tracking is correct (the target is a moving body), the tracking can be continued by performing the tracking continuable operation using the input device 6.

  In the initial tracking stage immediately after the transition from target capture to tracking mode, there are many erroneous trackings, but the operator does not perform an operation to end the incorrect tracking only by continuing to perform correct tracking. However, when the number of tracking reaches the limit number of tracking, the erroneous tracking is automatically terminated. Therefore, the operator can focus on the determination for determining correct tracking from the tracking status displayed on the display device 5. In addition, the time until the next capture operation can be shortened.

  The tracking radar apparatus according to the first embodiment described above is configured to irradiate a capture beam in a specified direction and automatically shift to a tracking mode for a target detected by the capture beam. The tracking radar apparatus according to the second embodiment of the present invention is configured to input a specified range and automatically shift to the tracking mode for a target detected from the input specified range.

  The configuration of the tracking radar apparatus according to the second embodiment is the same as that of the tracking radar apparatus according to the first embodiment shown in FIG. The designated range input means of the present invention comprises an input device 6. The shifting means of the present invention comprises a tracking filter device 4 and a control device 7. The input means of the present invention is composed of the input device 6. The control means of the present invention is composed of a control device 7.

  In the tracking radar device according to the second embodiment, the priority search range is designated from the input device 6 as the designated range. Specifically, the control device 7 generates a control signal instructing that the designated range input from the input device 6 should be irradiated with a beam, and sends the control signal to the beam control device 8. The beam control device 8 generates a beam control signal in response to this control signal and sends it to the transmitter 9.

  The transmitter 9 controls the antenna device 1 so that the beam is irradiated to the range specified by the beam control signal, and sends a transmission signal to the antenna device 1. As a result, a transmission wave is transmitted from the antenna device 1. Further, the antenna device 1 receives a reflected wave obtained by reflecting the transmission wave at the target, and sends it to the receiver 2 as a received signal.

  The receiver 2 converts the reception signal sent from the antenna device 1 into a digital video signal and sends it to the detection device 3. The detection device 3 detects the target from the digital video signal from the receiver 2 and sends it to the display device 5 and the control device 7. As a result, the detected target is displayed on the screen of the display device 5. Thereafter, the mode automatically shifts to the tracking mode for the target detected from the designated range. The operation in the tracking mode is the same as that of the tracking radar apparatus according to the first embodiment.

  Next, the effects of the tracking radar device according to the second embodiment of the present invention will be described in comparison with a conventional tracking radar device. FIG. 5 is a diagram for explaining the number of operations when a conventional tracking radar apparatus detects a target from a specified range and shifts to a tracking mode. FIG. 6 is a diagram for explaining the number of operations when the tracking radar apparatus according to the second embodiment of the present invention shifts from target capture to tracking mode. These examples shown in FIG. 5 and FIG. 6 are the same as the examples shown in FIG. 3 and FIG. 4 except that the target is detected from the priority search range (specified range) instead of detecting the target by the capture beam. It is.

  According to the tracking radar device according to the second embodiment of the present invention configured as described above, the same effects as the tracking radar device according to the first embodiment are obtained. In addition, manual tracking from a specific search range can be performed without using a dedicated acquisition beam. Therefore, even in a tracking radar device of a TWS (Track While Scan) system that does not have a dedicated tracking beam, manual tracking can be performed with a simple operation.

  The tracking radar device according to the third embodiment of the present invention is configured such that the tracking limit frequency can be changed in the tracking radar device according to the first embodiment.

  The configuration of the tracking radar apparatus according to the third embodiment is the same as that of the tracking radar apparatus according to the first embodiment shown in FIG. The tracking limit number changing means of the present invention is composed of an input device 6 and a control device 7.

  In the tracking radar device according to the third embodiment, the number of tracking restrictions can be specified from the input device 6. In step S22 of the flowchart shown in FIG. 2, the control device 7 compares the number of tracking times with the tracking limit number input from the input device 6. Other configurations and operations are the same as those of the first embodiment.

  FIG. 7 is a diagram for explaining the number of operations when the tracking radar apparatus according to the third embodiment of the present invention shifts from target capture to tracking mode. The target captured by the capture operation is assumed to be the same as that shown in FIG. Further, it is assumed that the tracking limit number is set to “3” by the input device 6. When the operator determines that the target of target number 1 has been correctly detected by the first tracking, first, the operator performs the tracking continuation enabling operation for the target of target number 1.

  Thereby, the tracking with respect to the target of the target number 1 is continued. Similarly, in the second tracking, a tracking continuation enabling operation is performed for the target of target number 3 that is determined that the target of target number 3 is correctly detected. In the third tracking, since the tracking number reaches the tracking limit number, the tracking for the remaining target numbers 2, 4, and 5 ends. Therefore, two operations are sufficient to end tracking of the false detection target.

  According to the tracking radar device according to the third embodiment of the present invention configured as described above, the same effects as the tracking radar device according to the first embodiment are obtained. In addition, since the limited number of tracking operations can be changed by the operator, the number of tracking operations necessary to determine whether the target displayed on the display device 5 is an incorrect target or a correct target is appropriately changed. It becomes possible to make a judgment according to the situation.

  The tracking radar device according to the third embodiment is configured so that the tracking limit number can be changed in the tracking radar device according to the first embodiment. However, the tracking limit number can be changed in the tracking radar device according to the second embodiment. In this case, the same effect as described above can be obtained.

  The tracking radar apparatus according to the fourth embodiment of the present invention uses a tracking limit time instead of the tracking limit number used in the tracking radar apparatus according to the first embodiment.

  The configuration of the tracking radar apparatus according to the fourth embodiment is the same as that of the tracking radar apparatus according to the first embodiment shown in FIG. In the tracking radar apparatus according to the fourth embodiment, the control device 7 compares the tracking time required for one tracking process with a predetermined tracking limit time in step S22 of the flowchart shown in FIG. Other configurations and operations are the same as those of the first embodiment.

  FIG. 8 is a diagram for explaining the number of operations when the tracking radar apparatus according to Embodiment 4 of the present invention shifts from target capture to tracking mode. The target captured by the capture operation is assumed to be the same as that shown in FIG. In addition, the tracking time required for one tracking process is 3 seconds, and the predetermined tracking limit time is 12 seconds.

  If the operator determines that the target of target number 1 is correctly detected after the first and second tracking, that is, 6 seconds after the target is detected, first, the operator performs the tracking continuation enabling operation for the target of target number 1. Thereby, the tracking with respect to the target of the target number 1 is continued. Similarly, after the third tracking, that is, after 9 seconds have elapsed, a tracking continuation enabling operation is performed for the target of target number 3 for which it is determined that the target of target number 3 has been correctly detected. After the fourth tracking, that is, after 12 seconds have elapsed, the tracking time reaches the tracking limit time, and the tracking for the remaining target numbers 2, 4 and 5 ends. Therefore, two operations are sufficient to end tracking of the false detection target.

  According to the tracking radar device according to the fourth embodiment of the present invention configured as described above, the same effects as the tracking radar device according to the first embodiment are obtained. In addition, by changing the tracking limit count to the tracking limit time, even in a tracking radar apparatus having a plurality of tracking time intervals (tracking data rates), it is possible to keep the determination time at the beginning of tracking constant. As a result, the operator can ensure a certain determination time regardless of the tracking data rate, and can perform an accurate determination.

  The tracking radar device according to the fourth embodiment is configured to use the tracking limit time instead of the tracking limit number in the tracking radar device according to the first embodiment. However, the tracking limitation in the tracking radar device according to the second embodiment is used. It is also possible to use a tracking limit time instead of the number of times, and in this case as well, the same effects as described above are obtained.

  Further, similarly to the tracking radar device according to the third embodiment, the tracking time limit can be specified and changed from the input device 6. The tracking time limit changing means of the present invention includes an input device 6 and a control device 7. According to this configuration, the same effects as the tracking radar apparatus according to the third embodiment are obtained.

  The present invention is applicable to a radar apparatus such as a tracking radar.

It is a block diagram which shows the structure of the tracking radar apparatus which concerns on Example 1 of this invention. It is a flowchart which shows the operation | movement at the time of shifting to tracking mode by manual operation from target detection in the tracking radar apparatus which concerns on Example 1 of this invention. It is a figure for demonstrating the frequency | count of operation in the case of transfering from target acquisition to tracking mode in the conventional tracking radar apparatus. In the tracking radar device according to the first embodiment of the present invention, it is a diagram for explaining the number of operations when shifting from the target capture to the tracking mode. In the conventional tracking radar apparatus, it is a figure for demonstrating the frequency | count of operation in the case of detecting a target from the designated range and shifting to tracking mode. In the tracking radar apparatus according to Example 2 of the present invention, it is a diagram for explaining the number of operations in the case of detecting a target from a specified range and shifting to a tracking mode. It is a figure for demonstrating the frequency | count of operation in the tracking radar apparatus which concerns on Example 3 of this invention when it transfers to tracking mode from target acquisition. In the tracking radar device according to Example 4 of the present invention, it is a diagram for explaining the number of operations when the target is detected from the specified range and shift to the tracking mode. It is a flowchart which shows the procedure which transfers the conventional tracking radar apparatus to tracking mode by manual operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna apparatus 2 Receiver 3 Detection apparatus 4 Tracking filter apparatus 5 Display apparatus 6 Input apparatus 7 Control apparatus 8 Beam control apparatus 9 Transmitter

Claims (5)

Scanning means for scanning the capture beam in a specified direction;
A transition means for automatically shifting to a tracking mode for tracking a target detected by scanning a capture beam with the scanning means;
Display means for displaying the tracking status of the target in the tracking mode transferred by the shifting means;
Input means for inputting the continuation of tracking in the initial tracking stage, and performing the tracking end operation after the initial tracking stage ;
If the input means does not input the continuation of tracking at the initial tracking stage and within the predetermined number of tracking limits, the tracking is automatically terminated, and after the initial tracking stage, a tracking end operation is performed by the input means. Control means for ending tracking in the case of
A tracking radar apparatus comprising: A designated range input means for inputting the designated range;
A transition means for automatically shifting to a tracking mode for tracking a target detected from the specified range input by the specified range input means;
Display means for displaying the tracking status of the target in the tracking mode transferred by the shifting means;
Input means for inputting the continuation of tracking in the initial tracking stage, and performing the tracking end operation after the initial tracking stage ;
If the input means does not input the continuation of tracking at the initial tracking stage and within the predetermined number of tracking limits, the tracking is automatically terminated, and after the initial tracking stage, a tracking end operation is performed by the input means. Control means for ending tracking in the case of
A tracking radar apparatus comprising:   The tracking radar apparatus according to claim 1, further comprising tracking limit frequency changing means for changing the tracking limit frequency. The control means, in place of the predetermined number of tracking restrictions, automatically terminates tracking when the input means does not input continuation of tracking at the initial stage of tracking and within a predetermined tracking time limit, The tracking radar apparatus according to claim 1 or 2 , wherein tracking is ended when a tracking end operation is performed by the input means after the initial tracking stage .   5. The tracking radar device according to claim 4, further comprising tracking time limit changing means for changing the tracking time limit.

Images