Missile Navigation Receiver Antenna Configuration
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Solution Overview
Problem
Unmanned missiles face challenges in navigational accuracy immediately after uncoupling from an aircraft due to difficulty in receiving position determination signals, leading to delayed target acquisition and reduced hit accuracy.
Innovation Solution
The missile is supplied with position determination signals during the docked state, allowing the receiver to establish a 'lock-on' with navigation systems before uncoupling, and equipped with multiple antennas for reliable signal reception during both horizontal and vertical flights, ensuring continuous position determination and autonomous navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the missile uses only a missile-side antenna for receiving position determination signals, then the missile can determine its position autonomously after uncoupling, but the reception of position determination signals is blocked by the aircraft when the missile is docked, causing time delay and reduced accuracy
Solution Approach 1:
The missile receiver is supplied with position determination signals from the aircraft-side antenna before uncoupling, allowing the receiver to establish lock-on with navigation satellites in advance. This preliminary action ensures that the missile already has active navigation signals when it separates from the aircraft, eliminating the time delay that would otherwise occur while the missile searches for signals after uncoupling.
2Reliability
If the missile is equipped with multiple antennas oriented in different directions, then signal reception is reliable during both horizontal and vertical flight, but the device complexity increases
Solution Approach 1:
Different antennas are positioned at specific locations on the missile with specific orientations optimized for their respective flight phases. The first antenna is positioned and oriented for optimal reception during vertical downward flight, while the second antenna is positioned and oriented for optimal reception during horizontal flight. This local optimization ensures reliable signal reception in each flight phase without requiring complex active switching or steering mechanisms.
Data Source
AI summary
The unmanned missile (1) has a navigation control device (32) comprising an electrically connected receiver (34) with an antenna (36) for position determining signals. The electrically connected receiver receives collected signals from an antenna and relays as signals for determining the position to rudders in navigation control device. The unmanned missile has an electrical signal input, which connects the missile up to the disengagement from the aircraft (2). The unmanned missile is attached with another antenna, which is also connected with the receiver electrically. An independent claim is also included for a method for the positioning of an unmanned missile, involves receiving of the signals by a receiver.