Method for positioning forest fire by forest fire fighting helicopter
A positioning method and helicopter technology, applied in the field of avionics, can solve problems such as inaccurate positioning of flight attitude
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[0133] An example of the forest fire location method is given below. Suppose the parameters of the helicopter at time t1 are shown in the table below:
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[0135] The helicopter parameters at time t2 are shown in the table below:
[0136]
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[0138] Use this forest fire location method as follows:
[0139] Step 1: Establish the body coordinate system O'X'Y'Z' and the earth coordinate system OXYZ.
[0140] Step 2: According to the pitch angle θ of the airborne infrared detection equipment 1 =-68, azimuth calculate t 1 The straight line L where the infrared optical axis of the airborne infrared detection equipment is located 1 The direction vector in the body coordinate system O′X′Y′Z′ is transformed into the earth coordinate system OXYZ:
[0141] (1) Calculate t 1 Time line L 1 The direction vector in the body coordinate system O'X'Y'Z'
[0142] (2) Calculate t 1 Time line L 1 Direction vector η in OXYZ coordinate system 1 .
[0143] Helico...
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