JP2002196068A - Radar signal processing device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To process radar signals in a plurality of radar beam directions in radar signal processing based on a DBF technology. SOLUTION: This radar signal processing device is provided with a signal processing control part controlling a signal processing mode, a buffer memory 6, a bulletin board 20 displaying a signal processing load cost matching the signal processing mode, a plurality of signal processing processor nodes 4 performing signal processing for a digital video in receipt of the digital video distribution, and a distribution processor node 3 referring to the bulletin board for listing the signal processing processor nodes each requiring a signal processing load cost below an optional threshold value, sorting them by using the signal processing load cost as a key, and dynamically allocating the digital videos buffered in the buffer memory to the respective signal processing nodes in the sorted order for distribution. In this way, a signal processing processor can be efficiently shared for performing signal processes at once even if processing times of the respective signal processes are different from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a DBF (Digita
The present invention relates to a radar signal processing apparatus and method for processing digital video in a plurality of radar beam directions at a time by using a beam forming technique.

[0002]

2. Description of the Related Art A conventional radar signal processing apparatus will be described with reference to the drawings. FIG. 9 is a diagram showing a configuration of a conventional radar signal processing device. In addition, the conventional radar signal processing device was attached to a radar device having only one radar beam.

In FIG. 9, 1 is a signal processing device, 2 is a signal processing controller, 4 is a signal processor node, 6 is a buffer memory, 7 is a bus, and 8 is a digital video input source.

In FIG. 1, a digital video input source 8
, The digital video 9a is temporarily stored in the buffer memory 6. This stored digital video 9b
Is transmitted to the signal processor node 4 according to the instruction of the signal processing controller 2. The signal processor node 4 performs desired signal processing on the received digital video signal 9 b according to an instruction 10 of the signal processing controller 2. The signal processing control unit 2, the buffer memory 6, and the signal processing processor node 4 are network-connected by a bus 7. The instruction 10 and the digital video 9b
Are configured to be communicated via the bus 7.

Next, the operation of the conventional radar signal processing device will be described with reference to the drawings. FIG. 10 is a flowchart showing the operation of the conventional radar signal processing device.

In step 901, the buffer memory 6 determines whether or not the input cycle of the digital video 9a has occurred.
If not, it waits for the input cycle of the digital video 9a.

Next, in step 902, in the case of the input period, the digital video 9b is distributed from the buffer memory 6 to the signal processor node 4 via the bus 7 and the process returns to step 901.

On the other hand, in step 951, the signal processor node 4 polls and waits for the digital video 9b to be distributed. If not, the process returns to polling for determining whether the digital video 9b has been distributed.

Next, in step 952, if the data is distributed, desired signal processing is performed, and the process returns to the polling in step 951 again.

[0010]

The conventional radar signal processing apparatus as described above has a signal processing structure corresponding to a unidirectional radar beam as described above.
There is a problem that radar signal processing in a plurality of radar beam directions using the DBF technology cannot be handled.

Further, when a plurality of signal processes are performed by one processor, there is a problem that a signal processing time proportional to the number of radar beams is required.

Furthermore, even if the same number of signal processors as the number of radar beams are prepared in advance, the time for ending when performing different signal processing for each radar beam is not constant. There was a problem that they could not be reused in synchronization.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has different signal processing for digital beams in a plurality of radar beam directions using DBF technology for each radar beam. Another object of the present invention is to provide a radar signal processing apparatus and method capable of performing signal processing at a time by efficiently using a signal processor even when the processing time is different.

[0014]

According to a first aspect of the present invention, there is provided a radar signal processing apparatus for temporarily buffering a digital video input from the outside and a signal processing control unit for controlling a signal processing mode. A buffer memory, a bulletin board for posting a signal processing load cost corresponding to the signal processing mode, a plurality of signal processing processor nodes for performing digital video signal processing when digital video distribution is received, and the bulletin board. By reference, the signal processing processor nodes whose signal processing load costs are equal to or less than an arbitrary threshold are listed, and the signal processing processor nodes are sorted by using the signal processing load cost as a key. Distribution for dynamically distributing and distributing digital video buffered in the buffer memory Is that a Rosessanodo.

According to a second aspect of the present invention, there is provided a radar signal processing apparatus for controlling a signal processing mode, a buffer memory for temporarily buffering digital video input from the outside, Refer to a signal processing load table in which signal processing load costs are registered in advance for each mode, calculate a signal processing load cost from the signal processing mode, store the value in its own node, and receive digital video distribution. In this case, a plurality of signal processing processor nodes for performing signal processing of the digital video and a signal processing load cost are inquired to each signal processing processor node, and a signal whose obtained signal processing load cost is equal to or less than an arbitrary threshold value. Digital video buffered in the buffer memory is dynamically distributed and delivered to the processing processor node. It is obtained by a delivery processor node.

According to a third aspect of the present invention, there is provided a radar signal processing apparatus for controlling a signal processing mode, a buffer memory for temporarily buffering digital video input from the outside, Refer to a signal processing load table in which signal processing load costs are registered in advance for each mode, calculate a signal processing load cost from the signal processing mode, save the value in its own node, and determine whether digital video distribution is possible. In this case, when the signal processing load cost is equal to or less than an arbitrary threshold value, a digital video distribution acceptance is notified, and when the digital video distribution is received, a plurality of signal processing processor nodes that perform digital video signal processing are provided. Notifying all the signal processor nodes whether or not the digital video distribution is possible,
And a distribution processor node for dynamically distributing and distributing the digital video buffered in the buffer memory in the order in which the digital video distribution acceptance is received from the signal processing processor node.

A radar signal processing method according to a fourth aspect of the present invention is divided into two roles: a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method, wherein the distribution processor node lists each signal processor node whose signal processing load cost according to a signal processing mode posted on a bulletin board is equal to or less than an arbitrary threshold, and Sorting the signal processor nodes using the cost as a key, dynamically distributing and distributing the digital video buffered in the buffer memory to each signal processor node in the sorted order; and distributing the digital video received signal. The processor processor node It is intended to include the steps of signal processing Rubideo.

A radar signal processing method according to a fifth aspect of the present invention is divided into two roles: a distribution processor node in charge of digital video distribution, and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method, wherein the distribution processor node inquires a signal processing load node of a signal processing load cost according to a signal processing mode, and the obtained signal processing load cost is equal to or less than an arbitrary threshold. Dynamically distributing and distributing the digital video buffered in the buffer memory to the processor node; and a signal processing load cost is previously registered for each signal processing mode by the signal processor node receiving the digital video distribution. Refer to the signal processing load table Calculates the signal processing load cost from the processing mode, the value stored in the own node, is intended to include a step of signal processing the digital video.

A radar signal processing method according to a sixth aspect of the present invention is divided into two roles of a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method, wherein the distribution processor node notifies all of the signal processor nodes whether digital video distribution is possible or not, and the digital video buffered in the buffer memory by the signal processor nodes in the order of acceptance of the digital video distribution. Dynamically distributing the signal processing load, and the signal processing processor node refers to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode. And calculate the value In the case where the digital video distribution availability notification is received, when the signal processing load cost according to the signal processing mode is equal to or less than an arbitrary threshold, the digital processor distributes digital video distribution acceptance to the distribution processor node. Receiving the digital video, and subjecting the digital video to signal processing.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A radar signal processing device according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a radar signal processing device according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a table of signal processing load costs in the radar signal processing device according to Embodiment 1 of the present invention. FIG. 3 shows Embodiment 1 of the present invention.
FIG. 2 is a diagram showing a bulletin board in the radar signal processing device according to the first embodiment. In the drawings, the same reference numerals indicate the same or corresponding parts.

In FIG. 1, 1A is a signal processing device, 2 is a signal processing control unit, 3 is a distribution processor node, 4 is a signal processor node, 5 is a shared memory, 6 is a buffer memory, 7 is a bus, and 8 is digital. Video input source.

In FIG. 1, a digital video 9a is temporarily stored in a buffer memory 6 from a digital video input source 8. The signal processing control unit 2 transmits the signal processing mode instruction 10 to the distribution processor node 3 and the signal processing processor node 4.

In FIG. 2, reference numeral 22 denotes a signal processing load cost signal of the own node, and each signal processor node 4 is connected to the bulletin board shown in FIG. Can post the signal processing load cost. The distribution processor node 3 has a code 21
The signal processor node 4 for distributing the digital video 9b with reference to the bulletin board 20 is determined by the signal processing method according to the first embodiment, and is distributed. The signal processor node 4 performs desired signal processing.

In FIG. 2, the signal processing load cost is obtained by the following formula. Signal processing load cost = signal processing time / digital video input cycle

Next, the operation of the radar signal processing apparatus according to the first embodiment will be described with reference to the drawings. FIG. 4 is a flowchart showing the operation of the radar signal processing device according to Embodiment 1 of the present invention.

In step 101, the distribution processor node 3 polls the input cycle of the digital video 9a and waits.

Next, at step 102, in the case of the input cycle of the digital video 9a, the signal processor load node whose signal processing load cost is equal to or less than the threshold value is read into its own node by referring to the bulletin board 20 in the shared memory 5. .

Next, in step 103, the read signal processor node numbers are sorted.

Next, in steps 104 to 106,
Initialize the number of sorts n of the number of loops and the loop variables (i =
0), 1 is added to the loop variable i, and the number of sorts n is compared with the loop variable i. If the loop variable i is less than the number of sorts n, the flow returns to step 101 to poll the input cycle of the digital video 9a and wait.

In step 107, if the loop variable i is equal to or larger than the number of sorts n (i ≧ n), the digital video 9b is distributed to each signal processor node 4 in the sorted order.

On the other hand, in step 151, each signal processor node 4 initializes its own signal processing load cost and posts it on the bulletin board 20.

Next, in step 152, it is determined whether the digital video 9b has been distributed. If not delivered, poll and wait.

Next, in step 153, the signal processing load cost is obtained from the table shown in FIG.
Is rewritten.

Then, in steps 154 to 155, desired signal processing is performed, and when the signal processing is completed, the signal processing load cost is initialized. These are shown in FIG.
Can be realized as software on the device shown in FIG.

FIG. 2 is an example of a signal processing load cost table corresponding to the “signal processing mode”. In radar signal processing, the signal processing time and cycle are determined by the signal processing mode. Taking advantage of this, the signal processing load cost at one signal processing processor node is calculated and tabulated in advance by using the expression of signal processing load cost = signal processing time / digital video input cycle.

FIG. 3 shows an example of the bulletin board 20 on the shared memory 5. The signal processing load cost calculated by the above equation can be listed corresponding to the signal processing processor node number.

That is, the radar signal processing apparatus according to the first embodiment includes a signal processing control unit 2 for controlling a signal processing mode, a buffer memory 6 for temporarily buffering digital video, and a signal processing mode. A denominator of one input cycle time of the corresponding digital video and a signal processing load cost, which is a ratio of a signal processing time at one signal processing processor node to a numerator, are posted on a network so that all processor nodes can refer to the cost. A list of the bulletin boards 20 on the connected shared memory 5 and signal processing processor nodes whose signal processing load costs are equal to or less than an arbitrary threshold, which are described below, are sorted by using the signal processing load costs as keys, Dynamically distribute each digital video to each signal processor node in sorted order The distribution processor node 3 which distributes and distributes the digital video, and when receiving the distribution of the digital video, refers to the signal processing load table in which the signal processing load cost is registered in advance for each signal processing mode, and switches from the signal processing mode to the signal processing load. A signal processor node 4 for calculating a load cost, further changing the bulletin board, and performing digital video signal processing, wherein the digital video signals in a plurality of radar beam directions are processed at once using DBF technology It is.

In the radar signal processing method according to the first embodiment, in radar signal processing using DBF technology, a plurality of processor nodes 4 connected to a network process digital video signals in a plurality of radar beam directions. In this case, the distribution processor node 3 is divided into two roles of a distribution processor node 3 in charge of digital video distribution and a signal processor node 4 for receiving digital video distribution and performing signal processing. A signal processing load cost, which is a ratio obtained by denominating one input cycle time of digital video according to the signal processing mode described on the bulletin board 20 and numerator of the signal processing time at one signal processor node, is tabulated. From the signal processing mode to calculate the signal processing load cost. List each signal processor node below an arbitrary threshold value, sort the signal processor nodes by signal processing load cost as a key, and dynamically allocate each digital video to each signal processor node in the sorted order Processor node 4 which has received the digital video distribution
Refers to a signal processing load table in which the signal processing load cost is registered in advance for each signal processing mode, calculates the signal processing load cost from the signal processing mode, further changes the bulletin board, and performs digital video signal processing. Is what you do.

According to the first embodiment, the respective processors 3, 4, the shared memory 5, and the buffer memory 6 connected to the network in the radar signal processing apparatus 1A are used, and further, the signal processing mode is simplified. The load cost is calculated and posted on the bulletin board 20, and the distribution processor node 3 determines the signal processing load cost, so that the digital video in a plurality of radar beam directions using the DBF technology can be processed differently for each radar beam. And
Even when the processing time is different for each signal processing, the signal processing can be performed at once by efficiently using the signal processor 4.

Embodiment 2 Embodiment 2 A radar signal processing device according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 5 is a diagram showing a configuration of a radar signal processing device according to Embodiment 2 of the present invention.

In FIG. 5, 1B is the entire radar signal processing apparatus according to the second embodiment. The digital video 9a is temporarily stored in the buffer memory 6 from the digital video input source 8. The signal processing control unit 2 transmits the signal processing mode instruction 10 to the distribution processor node 3 and the signal processing processor node 4.

In FIG. 2, each signal processor node 4 receives the signal processing mode instruction 10 and calculates its own signal processing load cost from the table of FIG. Reference numeral 23 denotes a signal for inquiring the signal processing load cost from the distribution processor node 3 to each of the signal processing processor nodes 4, and each of the signal processing processor nodes 4 returns a signal processing load cost of its own node to the distribution processor node 3. is there.

Further, in the same figure, if the signal processing load cost of each returned signal processing processor node 4 is equal to or less than an arbitrary threshold, the distribution processor node 3 determines the signal processing processor node 4 which distributes the digital video 9b. It is determined and distributed by the processing method of the second embodiment. The signal processor node 4 performs desired signal processing.
The signal processing control unit 2, the distribution processor node 3, each signal processing processor node 4, and the buffer memory 6
Are connected to a network via a bus 7 inside the signal processing, a digital video 9b, a signal processing mode instruction 10,
All of the signal processing load cost inquiry signals 23 are transmitted and received on the bus 7.

Next, the operation of the radar signal processing apparatus according to the second embodiment will be described with reference to the drawings. FIG. 6 is a flowchart showing the operation of the radar signal processing device according to Embodiment 2 of the present invention.

In step 201, the distribution processor 3 polls for an input cycle of digital video and waits.

Next, in steps 202 to 204,
In the case of the input cycle of the digital video, i as a loop variable is set to 0, and the number of loops n is set as the total number of the signal processor nodes 4. One is added to the loop variable i, and it is determined whether the loop variable i is equal to or less than the total number n of nodes. If the loop variable i is larger than the total number of nodes n, the process returns to step 201.

Next, in step 205, when the loop variable i is equal to or less than the total number n of nodes, the signal processing processor node 4 is inquired about the signal processing load cost.

Next, in step 206, the returned signal processing load cost is compared with an arbitrary threshold value. Step 2 if the signal processing load cost is not below an arbitrary threshold
Return to 03.

In step 207, if the returned signal processing load cost is equal to or less than an arbitrary threshold, the digital video 9b is distributed to the signal processor node 4.

On the other hand, in step 251, each signal processor node 4 initializes its own signal processing load cost.

Next, in step 252, the signal processing load cost of the own node is returned to the distribution processor 3.

Next, in step 253, it is determined whether the digital video 9b has been distributed. If not, return to step 252 and poll and wait.

Next, in step 254, if the signal is distributed, the signal processing load cost is obtained from the table shown in FIG. 2 and stored in the own node.

Then, in steps 255 to 256, desired signal processing is performed, and when the signal processing is completed, the own node signal processing load cost is initialized. In addition,
These can all be realized as software on the device shown in FIG.

That is, the radar signal processing apparatus according to the second embodiment includes a signal processing control section 2 for controlling a signal processing mode, a buffer memory 6 for temporarily buffering digital video, and a signal processing mode. One input cycle time of the corresponding digital video is denominator, and the signal processing load cost, which is a ratio of the signal processing time at one signal processor node to the numerator, is easily tabulated and calculated from the signal processing mode. A list of signal processing processor nodes whose cost is equal to or less than an arbitrary threshold is listed, and a distribution processor node 3 for dynamically distributing and distributing digital video to each signal processing node, and receiving distribution of digital video. Signal processing load cost is registered in advance for each signal processing mode. A signal processing processor node 4 that calculates a signal processing load cost from a signal processing mode by referring to a load table, and performs digital video signal processing. Signal processing.

In the radar signal processing method according to the second embodiment, in the radar signal processing using the DBF technique, a plurality of processor nodes connected to a network process digital video signals in a plurality of radar beam directions. A distribution processor node 3 in charge of digital video distribution and a signal processor node 4 for receiving digital video and performing signal processing.
The distribution processor node 3 sets a signal processing load cost, which is a ratio of a denominator of one input cycle time of digital video according to a signal processing mode and a numerator of a signal processing time at one signal processing node. It is tabulated and easily calculated from the signal processing mode. The signal processing processor node is inquired whether the signal processing load cost is equal to or less than an arbitrary threshold, and each digital video is dynamically sent to the signal processor node having the threshold or less. The signal processing processor node 4 that has received the digital video distribution refers to the signal processing load table in which the signal processing load cost is registered in advance for each signal processing mode, and switches from the signal processing mode to the signal processing load table. Calculate the load cost, save the value in its own node, and send digital video It is intended to sense.

According to the second embodiment, the processor 3, 4 and the buffer memory 6 connected to the network in the radar signal processor 1B are used, and the signal processing load cost is easily obtained from the signal processing mode. Therefore, even without using a shared memory or a bulletin board, the distribution processor 3 inquires each signal processor 4 to determine the signal processing load cost, so that digital video in a plurality of radar beam directions using the DBF technology can be obtained. Even if different signal processing is performed for each radar beam and the processing time is different for each signal processing, it is possible to efficiently use the signal processor 4 to perform the signal processing at a time.

Embodiment 3 FIG. Embodiment 3 A radar signal processing apparatus according to Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 7 is a diagram showing a configuration of a radar signal processing device according to Embodiment 3 of the present invention.

In FIG. 7, reference numeral 1C denotes the entire signal processing device according to the third embodiment. The digital video 9a is temporarily stored in the buffer memory 6 from the digital video input source 8. The signal processing control unit 2 transmits the signal processing mode instruction 10 to the distribution processor node 3 and the signal processing processor node 4.

In FIG. 3, each signal processor node 4 receives a signal processing mode instruction 10, calculates the signal processing load cost of its own node from the table shown in FIG. 2, and stores it in its own node. Reference numeral 24 denotes a signal for transmitting a digital video distribution availability notification from the distribution processor node 3 to each signal processor node 4.

In the same figure, reference numeral 25 indicates that each signal processor node 4 returns a digital video acceptance notification when the signal processing load cost of its own node is equal to or less than an arbitrary threshold, and returns no when the signal processing load cost is equal to or greater than the threshold. Signal.
The distribution processor node 3 determines that the digital video acceptance notification 25 of each signal processor node 4 returned is "yes".
If s, the digital video 9b is distributed.

Further, in the figure, the signal processor node 4 performs desired signal processing. The signal processing control unit 2, the distribution processor node 3, each signal processor node 4, and the buffer memory 6 are network-connected by a bus 7 inside the signal processing, and a digital video distribution availability notification 24, a digital video acceptance notification 2
5, digital video 9b, signal processing mode instruction 10
Are all transmitted and received on the bus 7.

Next, the operation of the radar signal processing apparatus according to the third embodiment will be described with reference to the drawings. FIG. 8 is a flowchart showing the operation of the radar signal processing device according to Embodiment 3 of the present invention.

In step 301, the distribution processor 3 polls for an input cycle of digital video and waits.

Next, in step 302, if the input cycle is a digital video, a digital video signal distribution availability notification 24 is transmitted to all signal processing processor nodes 4.

Next, in steps 303 to 305,
Let i, which is a loop variable, be 0, and let the number of loops n be the total number of signal processor nodes. One is added to the loop variable i, and the loop variable i is compared with the total number n of the nodes and determined. If the loop variable i is less than the total number n of nodes, step 3
Return to 01.

Next, in step 306, when the loop variable i is equal to or more than the total number n of the nodes, it is determined whether the digital video distribution acceptance notice 25 returned from each signal processor node 4 is yes. If no, the process returns to step 304.

Then, in step 307, if the digital video distribution acceptance notice 25 is yes, the digital video 9b is distributed to the signal processor node 4.

On the other hand, in step 351, each signal processing processor node 4 initializes its own signal processing load cost.

Next, in step 352, it is determined whether or not the digital video distribution availability notification 24 has arrived at its own node.

Next, in step 353, when the digital video distribution availability notification 24 is received, it is determined whether the signal processing load cost of the own node is equal to or less than an arbitrary threshold.

Next, in step 354, if the signal processing load cost of the own node is equal to or more than an arbitrary threshold, the digital video distribution acceptance notification is set to no.

Next, in step 355, if the signal processing load cost of the own node is less than an arbitrary threshold, the digital video distribution acceptance notification is set to yes.

Next, in step 356, the digital video distribution acceptance notice 25 is returned to the distribution processor node 3.

Next, in step 357, it is determined whether or not the digital video 9b has been distributed. If the digital video 9b has not been distributed, the flow returns to step 352 to perform polling and wait.

In steps 358 to 360, if the signal is distributed, the signal processing load cost is obtained from the table shown in FIG. 2 and stored in the own node.
Also, when the desired signal processing is performed and the signal processing is completed, the own node signal processing load cost is initialized. These can all be realized as software on the device shown in FIG.

That is, the radar signal processing apparatus according to the third embodiment includes a signal processing control unit 2 for controlling a signal processing mode, a buffer memory 6 for temporarily buffering digital video, A distribution processor node 3 for notifying the digital video distribution availability to the processing processor node 4 and dynamically distributing and distributing each digital video in the order in which the digital video distribution is accepted from the signal processing node 4, and according to the signal processing mode. If the signal processing load cost, which is the ratio of one signal input time of the digital video to the denominator and the signal processing time at one processor node as a numerator, is less than or equal to an arbitrary threshold, the distribution processor node 3 Notifies that video distribution has been accepted. Referring to a signal processing load table in which signal processing load costs are registered in advance for each processing mode, the signal processing load cost is calculated from the signal processing mode, the value is stored in the own node, and digital video signal processing is performed. Signal processing processor node and 4
This is to process digital video signals in a plurality of radar beam directions at once using BF technology.

In the radar signal processing method according to the third embodiment, in the radar signal processing using the DBF technique, a plurality of processor nodes connected to a network process digital video signals in a plurality of radar beam directions. A distribution processor node 3 in charge of digital video distribution and a signal processor node 4 for receiving digital video and performing signal processing.
The distribution processor node 3 notifies all the signal processing processor nodes 4 of whether or not digital video distribution is possible, and each of the signal processing processor nodes 4 receiving the digital video distribution permission / prohibition notification transmits a digital video signal corresponding to the signal processing mode. When a signal processing load cost, which is a ratio of one input cycle time of a video as a denominator to a signal processing time at one processor node as a numerator, is equal to or less than an arbitrary threshold,
The distribution processor node 3 notifies the distribution processor node 3 of the acceptance of the digital video distribution, and the distribution processor node 3 dynamically distributes and distributes the respective digital videos to the signal processing processor node 4 in the order in which the digital video distribution acceptance was received. The signal processing processor node 4 receiving the distribution of the signal processing load refers to the signal processing load table in which the signal processing load cost is registered in advance for each signal processing mode, calculates the signal processing load cost from the signal processing mode, and calculates the value thereof. Is stored in its own node, and the digital video is signal-processed.

According to the third embodiment, the processor 3, 4 and the buffer memory 6 connected to the network in the radar signal processing apparatus 1C are used, and the signal processing load cost is easily obtained from the signal processing mode. Therefore, each signal processor node 4 can be used without using the shared memory and the bulletin board and without inquiring each signal processor 4 to determine the signal processing load cost by the distribution processor 3.
By determining the signal processing load cost of its own node,
Even if the digital video in a plurality of radar beam directions using the DBF technology is subjected to different signal processing for each radar beam and the processing time differs for each signal processing,
The signal processing processor can be efficiently used to perform signal processing at a time.

[0080]

As described above, the radar signal processing apparatus according to the first aspect of the present invention includes a signal processing control unit for controlling a signal processing mode, and a buffer for temporarily buffering digital video input from the outside. A buffer memory, a signal processing load cost corresponding to the signal processing mode, a bulletin board for posting a digital video, and a plurality of signal processing processor nodes for performing signal processing of the digital video when receiving the distribution of the digital video; With reference to, list signal processing processor nodes whose signal processing load cost is equal to or less than an arbitrary threshold, and sort the signal processing processor nodes using the signal processing load cost as a key,
And a distribution processor node that dynamically distributes and distributes the digital video buffered in the buffer memory to each signal processing processor node in the sorted order, so that the digital video in a plurality of radar beam directions using DBF technology can be provided. In addition, even if different signal processing is performed for each radar beam and the processing time is different for each signal processing, the signal processing processor can be efficiently used to perform the signal processing at a time.

As described above, the radar signal processing device according to the second aspect of the present invention comprises a signal processing control unit for controlling a signal processing mode and a buffer for temporarily buffering digital video input from the outside. Memory and
Refer to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode, calculate a signal processing load cost from the signal processing mode, store the value in its own node, and distribute digital video. In response to this, a plurality of signal processing processor nodes for performing signal processing of the digital video and the signal processing load cost are inquired to each signal processing processor node, and the obtained signal processing load cost is equal to or less than an arbitrary threshold. And a distribution processor node for dynamically distributing and distributing the digital video buffered in the buffer memory to a certain signal processor node, so that the digital video in a plurality of radar beam directions using DBF technology can be Different signal processing, and if the processing time differs for each signal But, there is an effect that by turning using a signal processor efficiently it is possible to perform signal processing at a time.

As described above, the radar signal processing device according to the third aspect of the present invention comprises a signal processing control unit for controlling a signal processing mode and a buffer for temporarily buffering digital video input from the outside. Memory and
Referring to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode, calculate a signal processing load cost from the signal processing mode, store the value in its own node, and determine whether digital video distribution is possible. When the signal processing load cost is equal to or less than an arbitrary threshold value, a digital video distribution acceptance is notified, and when the digital video distribution is received, a plurality of signal processors for processing the digital video signal are received. A node and a signal processor for notifying all of the signal processor nodes whether or not the digital video can be distributed, and dynamically distributing and distributing the digital video buffered in the buffer memory in the order in which the digital video distribution is accepted from the signal processor node. Processor node and DBF
Digital video in multiple radar beam directions using technology is processed differently for each radar beam,
In addition, even when the processing time is different for each signal processing, it is possible to efficiently use the signal processor to perform the signal processing at a time.

As described above, the radar signal processing method according to a fourth aspect of the present invention comprises a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method divided into two roles, wherein said distribution processor node lists each signal processor node whose signal processing load cost according to a signal processing mode posted on a bulletin board is equal to or less than an arbitrary threshold value. Sorting the signal processor nodes using the signal processing load cost as a key, dynamically distributing and distributing the digital video buffered in the buffer memory to each signal processor node in the sorted order; The signal processor that received the distribution Signal processing of the digital video, the digital video in a plurality of radar beam directions using the DBF technique is subjected to different signal processing for each radar beam, and the processing time differs for each signal processing. Even in this case, there is an effect that signal processing can be performed at once by efficiently using the signal processor.

As described above, the radar signal processing method according to the fifth aspect of the present invention comprises a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method divided into two roles, wherein the distribution processor node inquires of a signal processing processor node about a signal processing load cost according to a signal processing mode, and the obtained signal processing load cost is an arbitrary threshold value. Dynamically distributing and distributing the digital video buffered in the buffer memory to the following signal processing processor node; and a signal processing load cost for each signal processing mode by the signal processor node receiving the digital video distribution. Is a signal processing load registered in advance And calculating the signal processing load cost from the signal processing mode, storing the value in the own node, and performing signal processing on the digital video. That different signal processing is applied to each digital beam for each radar beam, and even if the processing time differs for each signal processing, the signal processing processor can be efficiently used to perform signal processing at once. To play.

As described above, the radar signal processing method according to the sixth aspect of the present invention comprises a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing. A radar signal processing method divided into two roles, wherein the distribution processor node notifies all of the signal processing processor nodes whether digital video distribution is possible or not, and sends the digital video distribution acceptance to the signal processing processor nodes in the buffer memory in the order received. Dynamically distributing and delivering the buffered digital video;
The signal processing processor node refers to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode, calculates the signal processing load cost from the signal processing mode, and stores the value in its own node. Save and
When receiving the digital video distribution availability notification, when the signal processing load cost corresponding to the signal processing mode is equal to or less than an arbitrary threshold, the distribution processor node is notified of digital video distribution acceptance, and the digital video distribution is accepted. Receiving the distribution, the signal processing of the digital video, the digital video in a plurality of radar beam directions using the DBF technology is subjected to different signal processing for each radar beam, and
Even when the processing time is different for each signal processing, it is possible to efficiently use the signal processor and perform the signal processing at a time.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a radar signal processing device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a table of signal processing load costs of the radar signal processing devices according to Embodiments 1 to 3 of the present invention.

FIG. 3 is a diagram showing a bulletin board of the radar signal processing device according to Embodiment 1 of the present invention.

FIG. 4 is a flowchart showing an operation of the radar signal processing device according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a radar signal processing device according to Embodiment 2 of the present invention.

FIG. 6 is a flowchart showing an operation of the radar signal processing device according to Embodiment 2 of the present invention.

FIG. 7 is a diagram showing a configuration of a radar signal processing device according to Embodiment 3 of the present invention.

FIG. 8 is a flowchart showing an operation of the radar signal processing device according to Embodiment 3 of the present invention.

FIG. 9 is a diagram showing a configuration of a conventional radar signal processing device.

FIG. 10 is a flowchart showing the operation of a conventional radar signal processing device.

[Explanation of symbols]

1A, 1B, 1C signal processing device, 2 signal processing control unit, 3 distribution processor node, 4 signal processing processor node, 5 shared memory, 6 buffer memory, 7
Bus, 8 digital video input sources, 20 bulletin boards.

Claims (6)

[Claims] 1. A signal processing control section for controlling a signal processing mode; a buffer memory for temporarily buffering digital video input from the outside; and a signal processing load cost according to the signal processing mode. A bulletin board; a plurality of signal processor nodes for performing digital video signal processing when digital video distribution is received; and a signal processor having a signal processing load cost equal to or less than an arbitrary threshold with reference to the bulletin board. Nodes are listed, the signal processing processor nodes are sorted using the signal processing load cost as a key, and digital video buffered in the buffer memory is dynamically distributed to each signal processing node in the sorted order. Radar signal processing device, comprising: a processor node. . 2. A signal processing control section for controlling a signal processing mode; a buffer memory for temporarily buffering digital video input from the outside; and a signal processing load cost registered in advance for each signal processing mode. The signal processing load table is referred to, the signal processing load cost is calculated from the signal processing mode, the value is stored in the own node, and when digital video distribution is received, the digital video signal processing is performed. A plurality of signal processing processor nodes, and a signal processing load cost is inquired to each signal processing node, and the obtained signal processing load cost is equal to or less than an arbitrary threshold. And a distribution processor node for dynamically distributing and distributing the video. Radar signal processor. 3. A signal processing control section for controlling a signal processing mode; a buffer memory for temporarily buffering digital video input from the outside; and a signal processing load cost registered in advance for each signal processing mode. Refer to the signal processing load table, calculate the signal processing load cost from the signal processing mode, save the value in its own node, and if digital video distribution availability is received, the signal processing load cost may be set to an arbitrary threshold. In the following cases, the digital video distribution acceptance is notified, and when the digital video distribution is received, a plurality of signal processing processor nodes for performing signal processing of the digital video, and the digital video distribution The digital video distribution is accepted from the signal processor node. A distribution processor node for dynamically distributing and distributing the digital video buffered in the buffer memory. 4. A radar signal processing method divided into two roles of a distribution processor node in charge of distribution of digital video and a signal processor node receiving signal of said digital video and performing signal processing, said distribution processor node comprising: By listing signal processing processor nodes whose signal processing load cost according to the signal processing mode posted on the bulletin board is equal to or less than an arbitrary threshold, sort the signal processing processor nodes using the signal processing load cost as a key, Dynamically distributing and distributing the digital video buffered in the buffer memory to each signal processor node in the sorted order; and performing signal processing on the digital video by the signal processor node receiving the distribution of the digital video. Steps and Radar signal processing method and butterflies. 5. A radar signal processing method which is divided into two roles of a distribution processor node in charge of digital video distribution and a signal processor node for receiving the digital video and performing signal processing, wherein the distribution processor node The signal processing load cost according to the signal processing mode is queried to the signal processing processor node, and the obtained signal processing load cost is equal to or less than an arbitrary threshold value. Dynamically distributing and distributing, and by referring to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode by the signal processing processor node having received the digital video distribution, Calculate the signal processing load cost from
Storing the value in its own node and processing the digital video signal. 6. A radar signal processing method divided into two roles of a distribution processor node in charge of distribution of digital video and a signal processor node for performing signal processing in response to distribution of the digital video, wherein the distribution processor node Notifying all the signal processing processor nodes whether digital video distribution is possible or not, and dynamically distributing and distributing the digital video buffered in the buffer memory to the signal processor nodes in the order of receiving the digital video distribution acceptance, The signal processing processor node refers to a signal processing load table in which signal processing load costs are registered in advance for each signal processing mode, calculates the signal processing load cost from the signal processing mode, and stores the value in its own node. And
When receiving the digital video distribution availability notification, when the signal processing load cost corresponding to the signal processing mode is equal to or less than an arbitrary threshold, the distribution processor node is notified of digital video distribution acceptance, and the digital video distribution is accepted. Performing a signal processing on the digital video when the distribution is received.