Radiosonde Delayed Transmission Launch Site Detection
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Solution Overview
Problem
Existing radiosondes are vulnerable to detection by foreign entities due to immediate radio transmission upon launch, and their signals interfere with other radio communications, especially in densely populated areas with numerous mobile devices.
Innovation Solution
Implementing a delayed start for radio transmission of radiosondes, with data buffering between launch and transmission, triggered by altitude or GPS information, to avoid immediate detection and minimize electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If radio transmission is activated prior to or at launch, then measurement information can be transmitted immediately, but the launch site becomes detectable by other parties
Solution Approach 1:
The radiosonde performs preliminary actions (measurement, data buffering) before activating radio transmission. The measurement phase begins immediately at launch, but data is buffered in memory until a predetermined time delay expires, at which point transmission is activated. This preliminary measurement-and-buffering action resolves the contradiction by allowing data collection without immediate transmission vulnerability.
2Productivity
If radio transmission is activated immediately, then real-time data can be transmitted, but electromagnetic interference with other radio communications occurs
Solution Approach 1:
The radio transmission operates periodically rather than continuously. After the predetermined time delay, the transmitter activates for a first period to transmit buffered historical data, then remains inactive for a second period while continuing measurements, and activates again for a third period to transmit real-time data. This periodic transmission pattern reduces electromagnetic interference while maintaining data transmission efficiency.
3Object-affected harmful factors
If radio transmission is delayed, then detection and interference are reduced, but data transmission latency increases
Solution Approach 1:
The system performs preliminary data buffering during the delay period, so when transmission finally activates, there is already a substantial amount of historical measurement data ready for immediate transmission. This preliminary buffering action ensures that the subsequent transmission phase can efficiently send accumulated data without prolonged latency, resolving the contradiction between delay benefits and transmission timing.
Solution Approach 2:
The periodic transmission schedule includes multiple activation periods: a first period for transmitting buffered historical data after the initial delay, and subsequent periods for transmitting real-time data. This structured periodic approach ensures that data transmission occurs systematically at optimized intervals, balancing the reduction of detection risk during delay periods with efficient data delivery during transmission periods.
Data Source
AI summary
A method and a radiosonde wherein the radiosonde is launched from a launching station and transmission of the radiosonde is started in order to send measurement data to a receiver. The transmission of the radiosonde is started only after a delay from the launch.