aircraft. No attempt has been made to design even a symbolic air- 

 craft system at this stage. Emphasis is being placed on the deve- 

 lopment of individual aircraft instruments and aircraft observ- 

 ing techniques, although some work in integrated aircraft data 

 recording will be performed. This figure indicates instruments 

 based on the present state of the art that could conceivably be 

 developed to fit into this system. These include: (1) Some type of 

 expendable device almost certain to be required for measuring 

 subsurface conditions, whether it is the version being developed 

 by the Bureau of Naval Weapons or some other instrument such as 

 the BT slug being developed by Canadian laboratories (The Bureau 

 of Naval Weapons has contracted for a number of airdroppable BT's 

 with improved capability for delivery in the fall of 1961. ); (2) the 

 airborne radiation thermometer (ART) with which the Hydrographic 

 Office has been experimenting for some time (This instrument was 

 originally developed by Woods Hole and more recently improved 

 and repackaged by commercial contractors.); (3) a device for 

 nneasurement of wave conditions from fixed-wing aircraft (ASWEPS 

 has procurement action underway for the development of an ex- 

 perimental model based on work performed by the Naval Research 

 Laboratory. This instrument will be evaluated in an aircraft 

 recently assigned to the ASWEPS program.); and (4) possible exten- 

 sion of infrared techniques to include a scanning device for tempera- 

 ture measurement as has been developed for other DOD applica- 

 tions (These instruments and others will be tested and evaluated 

 in the ASWEPS aircraft in the hope that a system can be designed 

 for procurement in late 1963 or early 1964. About 12 such systems 

 will be required for installation on land-based ASW aircraft, as 

 well as on aircraft assigned to operating task groups.). 



Figxire 12, 6 indicates the fourth category of platform, viz. , 

 moored telemetering stations. This is an attempt to show the 

 ideal telemetering station as far as ASWEPS requirements are 

 concerned. The Bureau of Naval Weapons has been most active in 

 its development. The Hydrographic Office has recently joined the 

 Bureau of Naval Weapons in the procurement of several stations 

 which will have capabilities somewhat less than those indicated in 

 this figure. Subsequent development caji be improved to naeet 

 ASWEPS requirements by means of successive procurement actions 

 which will improve the state of the art. For the service test 

 version, about 12 of these stations will be required. 



Figure 12.7 indicates a few additional instrumentation require- 

 ments; e.g. , an instrument to provide an index of bottom reflec- 



136 



