2016 International Conference on Control and Automation (ICCA 2016)
ISBN: 978-1-60595-329-8
Assistant Models for MITL Target Recognition Based on INS
and Imaging FOV
Xin-guo WANG, Liang XUE, Ai-hua LI and Li-xin WANG
Xi’an Research Inst. Of Hi-Tech, Hongqing Town, Xi’an, P.R. 710025, China
wxgsea@163.com
Keywords: Man-in-the-loop (MITL), Target Recognition (TR), INS, FOV.
Abstract. Man-in-the-loop (MITL) target recognition system can recognise the target by man
operation in the long-distance, and it is a new target reconition system presented for solving Auto
Target Recognition (ATR) system’s drawbacks of very low recognition probability in condition of
complex background. But MITL relays on template matching of ATR, and the real-time template is
not checked by matching criterions. At present, the problem of the lower target recognition
probability, poor precision and poor reliability are not solved. To solve the problem, research using
Inertial Navigation System (INS) and optical imaging sensor's Field Of View(FOV) to assist MITL.
Design a correct model assistansed by INS and FOV of imaging, and simulations are done to check
the model and the rusult show that the model can provid target direction angle for aircraft, and the
angel precision is fine.
Introduction
With the rapid improvement of high precision weapons, the target recognition technique is
improved in many fields, such as detecting target from sea, missile defense system and air defense
system, etc. In these fields, the Auto Target Recognition technique is applied successfully and
broadly. But ATR is often failed to recognize the target when the background of target is very
complex. That is say the background of target is more complex the correct recognition probability
and reliability are lower.
For example, in war-field, the pictures of the same target from image sensor may vary largely for
different altitude, different distance, different directions, different season and different weather etc.
Those result in the ATR drawbacks of low recognition probability and low reliability, especially in
the condition with complicated environment and bad weather, the ATR is ineffective for
care-disguised targets, flying targets in low altitude, small target from long-distance and the
half-hidden target. For solving the problem, Man-in-the-loop (MITL) is used in the target
recognition to approve the performance of target recognition. MITL system sends out the image
from the borne-image-sensor to the ground control-device through the wireless data chain, then
operators can recognize the target from the image and the ground control-device sends the target
position information back to the missile to assist the missile recognizing the target. Because human
is most intelligence in recognizing target than a superlative machine, the MITL together with ATR
will play a more important role in long range target recognizing.
]21[
In operation, MITL system artificially selects a new target match-plate for ATR, and then ATR
matches the new target match-plate with the real-time view-field photo took by the
borne-image-sensor. This method of MITL can overcome the unexpected effect for long delay time
of transmission through data chain.
5]-[3
But from various experiments, this kind of mode of MITL
still has some problems. The first, when MITL works, it still relays on ATR system to match the
target match-plate from MITL with the real-time image. So MITL is works with ATR work together
in serial mode to complete an image-matching. And the new match-plate from MITL is not checked
through the image-match criterions, for which the failed-match probability is large in some complex
environment. The second, guidance system of precise weapons is generally combined by several
navigation methods. The present method of MITL neglected the other systems’ guidance
information. If make use of the data of Inertial Navigation System (INS) and sight navigation
technique, it can provide target origin information to assistant the MITL and ATR.
7]-[6